Merge branch 'patch-29' into 'dev'

Patch 29 See merge request Kostikov/core!3
author: Max Kostikov <max@kostikov.co> 2018-09-28 15:46:14 +0200
committer: Max Kostikov <max@kostikov.co> 2018-09-28 15:46:14 +0200
commit: 4a904fa3a8af1c101ede76657249fb7eb47faf60 (patch)
tree: 544509813fb68579ef2b556ce879a971d183269a /vendor/twbs/bootstrap/site
parent: f5f6ec3d71acb3e0488386819d5060e59331ec23 (diff)
parent: c13d7e29ef9676b0f0e4ae23aa52e203f4ad8895 (diff)
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diff --git a/vendor/twbs/bootstrap/site/_data/breakpoints.yml b/vendor/twbs/bootstrap/site/_data/breakpoints.yml
new file mode 100644
index 000000000..3c8cfe293
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/breakpoints.yml
@@ -0,0 +1,29 @@
+- breakpoint: xs
+  abbr: ""
+  name: Extra small
+  min-width: 0px
+  container: ""
+
+- breakpoint: sm
+  abbr: -sm
+  name: Small
+  min-width: 576px
+  container: 540px
+
+- breakpoint: md
+  abbr: -md
+  name: Medium
+  min-width: 768px
+  container: 720px
+
+- breakpoint: lg
+  abbr: -lg
+  name: Large
+  min-width: 992px
+  container: 960px
+
+- breakpoint: xl
+  abbr: -xl
+  name: Extra large
+  min-width: 1200px
+  container: 1140px
diff --git a/vendor/twbs/bootstrap/site/_data/browser-bugs.yml b/vendor/twbs/bootstrap/site/_data/browser-bugs.yml
new file mode 100644
index 000000000..ceb2e5f5f
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/browser-bugs.yml
@@ -0,0 +1,451 @@
+-
+  browser: >
+    Edge
+  summary: >
+    Visual artifacts in scrollable modal dialogs
+  upstream_bug: >
+    Edge#9011176
+  origin: >
+    Bootstrap#20755
+
+-
+  browser: >
+    Edge
+  summary: >
+    Native browser tooltip for `title` shows on first keyboard focus (in addition to custom tooltip component)
+  upstream_bug: >
+    Edge#6793560
+  origin: >
+    Bootstrap#18692
+
+-
+  browser: >
+    Edge
+  summary: >
+    Hovered element still remains in `:hover` state after scrolling away.
+  upstream_bug: >
+    Edge#5381673
+  origin: >
+    Bootstrap#14211
+
+-
+  browser: >
+    Edge
+  summary: >
+    CSS `border-radius` sometimes causes lines of bleed-through of the `background-color` of the parent element.
+  upstream_bug: >
+    Edge#3342037
+  origin: >
+    Bootstrap#16671
+
+-
+  browser: >
+    Edge
+  summary: >
+    `background` of `<tr>` is only applied to first child cell instead of all cells in the row
+  upstream_bug: >
+    Edge#5865620
+  origin: >
+    Bootstrap#18504
+
+-
+  browser: >
+    Edge
+  summary: >
+    `@-ms-viewport{width: device-width;}` has side-effect of making scrollbars auto-hide
+  upstream_bug: >
+    Edge#7165383
+  origin: >
+    Bootstrap#18543
+
+-
+  browser: >
+    Edge
+  summary: >
+    Background color from lower layer bleeds through transparent border in some cases
+  upstream_bug: >
+    Edge#6274505
+  origin: >
+    Bootstrap#18228
+
+-
+  browser: >
+    Edge
+  summary: >
+    Hovering over descendant SVG element fires `mouseleave` event at ancestor
+  upstream_bug: >
+    Edge#7787318
+  origin: >
+    Bootstrap#19670
+
+-
+  browser: >
+    Edge
+  summary: >
+    Active `position: fixed;` `<button>` flickers when scrolling
+  upstream_bug: >
+    Edge#8770398
+  origin: >
+    Bootstrap#20507
+
+-
+  browser: >
+    Firefox
+  summary: >
+    `.table-bordered` with an empty `<tbody>` is missing borders.
+  upstream_bug: >
+    Mozilla#1023761
+  origin: >
+    Bootstrap#13453
+
+-
+  browser: >
+    Firefox
+  summary: >
+    If the disabled state of a form control is changed via JavaScript, the normal state doesn't return after refreshing the page.
+  upstream_bug: >
+    Mozilla#654072
+  origin: >
+    Bootstrap#793
+
+-
+  browser: >
+    Firefox
+  summary: >
+    `focus` events should not be fired at the `document` object
+  upstream_bug: >
+    Mozilla#1228802
+  origin: >
+    Bootstrap#18365
+
+-
+  browser: >
+    Firefox
+  summary: >
+    Wide floated table doesn't wrap onto new line
+  upstream_bug: >
+    Mozilla#1277782
+  origin: >
+    Bootstrap#19839
+
+-
+  browser: >
+    Firefox
+  summary: >
+    Mouse sometimes not within element for purposes of `mouseenter`/`mouseleave` when it's within SVG elements
+  upstream_bug: >
+    Mozilla#577785
+  origin: >
+    Bootstrap#19670
+
+-
+  browser: >
+    Firefox
+  summary: >
+    Layout with floated columns breaks when printing
+  upstream_bug: >
+    Mozilla#1315994
+  origin: >
+    Bootstrap#21092
+
+-
+  browser: >
+    Firefox (Windows)
+  summary: >
+    Right border of `<select>` menu is sometimes missing when screen is set to uncommon resolution
+  upstream_bug: >
+    Mozilla#545685
+  origin: >
+    Bootstrap#15990
+
+-
+  browser: >
+    Firefox (macOS & Linux)
+  summary: >
+    Badge widget causes bottom border of Tabs widget to unexpectedly not overlap
+  upstream_bug: >
+    Mozilla#1259972
+  origin: >
+    Bootstrap#19626
+
+-
+  browser: >
+    Chrome (Android)
+  summary: >
+    Tapping on an `<input>` in a scrollable overlay doesn't scroll the `<input>` into view
+  upstream_bug: >
+    Chromium#595210
+  origin: >
+    Bootstrap#17338
+
+-
+  browser: >
+    Chrome (macOS)
+  summary: >
+    Clicking above `<input type="number">` increment button flashes the decrement button.
+  upstream_bug: >
+    Chromium#419108
+  origin: >
+    Offshoot of Bootstrap#8350 & Chromium#337668
+
+-
+  browser: >
+    Chrome
+  summary: >
+    CSS infinite linear animation with alpha transparency leaks memory.
+  upstream_bug: >
+    Chromium#429375
+  origin: >
+    Bootstrap#14409
+
+-
+  browser: >
+    Chrome
+  summary: >
+    `table-cell` borders not overlapping despite `margin-right: -1px`
+  upstream_bug: >
+    Chromium#749848
+  origin: >
+    Bootstrap#17438, Bootstrap#14237
+
+-
+  browser: >
+    Chrome
+  summary: >
+    Clicking scrollbar in `<select multiple>` with overflowed options will select nearby `<option>`
+  upstream_bug: >
+    Chromium#597642
+  origin: >
+    Bootstrap#19810
+
+-
+  browser: >
+    Chrome
+  summary: >
+    Don't make `:hover` sticky on touch-friendly webpages
+  upstream_bug: >
+    Chromium#370155
+  origin: >
+    Bootstrap#12832
+
+-
+  browser: >
+    Chrome
+  summary: >
+    `position: absolute` element that's wider than its column is incorrectly clipped to column boundary
+  upstream_bug: >
+    Chromium#269061
+  origin: >
+    Bootstrap#20161
+
+-
+  browser: >
+    Chrome (Windows & Linux)
+  summary: >
+    Animation glitch when returning to inactive tab after animations occurred while tab was hidden.
+  upstream_bug: >
+    Chromium#449180
+  origin: >
+    Bootstrap#15298
+
+-
+  browser: >
+    Chrome
+  summary: >
+    Significant performance hit for dynamic SVGs with text depending on the number of fonts in `font-family`.
+  upstream_bug: >
+    Chromium#781344
+  origin: >
+    Bootstrap#24673
+
+-
+  browser: >
+    Safari
+  summary: >
+    `rem` units in media queries should be calculated using `font-size: initial`, not the root element's `font-size`
+  upstream_bug: >
+    WebKit#156684
+  origin: >
+    Bootstrap#17403
+
+-
+  browser: >
+    Safari
+  summary: >
+    Link to container with id and tabindex results in container being ignored by VoiceOver (affects skip links)
+  upstream_bug: >
+    WebKit#163658
+  origin: >
+    Bootstrap#20732
+
+-
+  browser: >
+    Safari
+  summary: >
+    CSS `min-width` and `max-width` media features should not round fractional pixel
+  upstream_bug: >
+    WebKit#178261
+  origin: >
+    Bootstrap#25166
+
+-
+  browser: >
+    Safari (macOS)
+  summary: >
+    `px`, `em`, and `rem` should all behave the same in media queries when page zoom is applied
+  upstream_bug: >
+    WebKit#156687
+  origin: >
+    Bootstrap#17403
+
+-
+  browser: >
+    Safari (macOS)
+  summary: >
+    Weird button behavior with some `<input type="number">` elements.
+  upstream_bug: >
+    WebKit#137269, Safari#18834768
+  origin: >
+    Bootstrap#8350,
+    Normalize#283,
+    Chromium#337668
+
+-
+  browser: >
+    Safari (macOS)
+  summary: >
+    Small font size when printing webpage with fixed-width `.container`.
+  upstream_bug: >
+    WebKit#138192, Safari#19435018
+  origin: >
+    Bootstrap#14868
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    `transform: translate3d(0,0,0);` rendering bug.
+  upstream_bug: >
+    WebKit#138162, Safari#18804973
+  origin: >
+    Bootstrap#14603
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Text input's cursor doesn't move while scrolling the page.
+  upstream_bug: >
+    WebKit#138201, Safari#18819624
+  origin: >
+    Bootstrap#14708
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Can't move cursor to start of text after entering long string of text into `<input type="text">`
+  upstream_bug: >
+    WebKit#148061, Safari#22299624
+  origin: >
+    Bootstrap#16988
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    `display: block` causes text of temporal `<input>`s to become vertically misaligned
+  upstream_bug: >
+    WebKit#139848, Safari#19434878
+  origin: >
+    Bootstrap#11266, Bootstrap#13098
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Tapping on `<body>` doesn't fire `click` events
+  upstream_bug: >
+    WebKit#151933
+  origin: >
+    Bootstrap#16028
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    `position:fixed` is incorrectly positioned when tab bar is visible on iPhone 6S+ Safari
+  upstream_bug: >
+    WebKit#153056
+  origin: >
+    Bootstrap#18859
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Tapping into an `<input>` within a `position:fixed` element scrolls to the top of the page
+  upstream_bug: >
+    WebKit#153224, Safari#24235301
+  origin: >
+    Bootstrap#17497
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    `<body>` with `overflow:hidden` CSS is scrollable on iOS
+  upstream_bug: >
+    WebKit#153852
+  origin: >
+    Bootstrap#14839
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Scroll gesture in text field in `position:fixed` element sometimes scrolls `<body>` instead of scrollable ancestor
+  upstream_bug: >
+    WebKit#153856
+  origin: >
+    Bootstrap#14839
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Modal with `-webkit-overflow-scrolling: touch` doesn't become scrollable after added text makes it taller
+  upstream_bug: >
+    WebKit#158342
+  origin: >
+    Bootstrap#17695
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Don't make `:hover` sticky on touch-friendly webpages
+  upstream_bug: >
+    WebKit#158517
+  origin: >
+    Bootstrap#12832
+
+-
+  browser: >
+    Safari (iOS)
+  summary: >
+    Element which is `position:fixed` disappears after opening a `<select>` menu
+  upstream_bug: >
+    WebKit#162362
+  origin: >
+    Bootstrap#20759
+
+-
+  browser: >
+    Safari (iPad Pro)
+  summary: >
+    Rendering of descendants of `position: fixed` element gets clipped on iPad Pro in Landscape orientation
+  upstream_bug: >
+    WebKit#152637, Safari#24030853
+  origin: >
+    Bootstrap#18738
diff --git a/vendor/twbs/bootstrap/site/_data/browser-features.yml b/vendor/twbs/bootstrap/site/_data/browser-features.yml
new file mode 100644
index 000000000..6c8701f68
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/browser-features.yml
@@ -0,0 +1,139 @@
+-
+  browser: >
+    Edge
+  summary: >
+    Focusable elements should fire focus event / receive :focus styling when they receive Narrator/accessibility focus
+  upstream_bug: >
+    A11yUserVoice#16717318
+  origin: >
+    Bootstrap#20732
+
+-
+  browser: >
+    Edge
+  summary: >
+    Implement the [`:dir()` pseudo-class](https://developer.mozilla.org/en-US/docs/Web/CSS/:dir) from Selectors Level 4
+  upstream_bug: >
+    UserVoice#12299532
+  origin: >
+    Bootstrap#19984
+
+-
+  browser: >
+    Edge
+  summary: >
+    Implement the HTML5 [`<dialog>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog)
+  upstream_bug: >
+    UserVoice#6508895
+  origin: >
+    Bootstrap#20175
+
+-
+  browser: >
+    Edge
+  summary: >
+    Fire a [`transitioncancel` event](https://developer.mozilla.org/en-US/docs/Web/Events/transitioncancel) when a CSS transition is canceled
+  upstream_bug: >
+    UserVoice#15939898
+  origin: >
+    Bootstrap#20618
+
+-
+  browser: >
+    Edge
+  summary: >
+    Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
+  upstream_bug: >
+    UserVoice#15944476
+  origin: >
+    Bootstrap#20143
+
+-
+  browser: >
+    Firefox
+  summary: >
+    Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
+  upstream_bug: >
+    Mozilla#854148
+  origin: >
+    Bootstrap#20143
+
+-
+  browser: >
+    Firefox
+  summary: >
+    Implement the HTML5 [`<dialog>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog)
+  upstream_bug: >
+    Mozilla#840640
+  origin: >
+    Bootstrap#20175
+
+-
+  browser: >
+    Firefox
+  summary: >
+    When virtual focus is on a button or link, fire actual focus on the element, too
+  upstream_bug: >
+    Mozilla#1000082
+  origin: >
+    Bootstrap#20732
+
+-
+  browser: >
+    Chrome
+  summary: >
+    Fire a [`transitioncancel` event](https://developer.mozilla.org/en-US/docs/Web/Events/transitioncancel) when a CSS transition is canceled
+  upstream_bug: >
+    Chromium#642487
+  origin: >
+    Chromium#437860
+
+-
+  browser: >
+    Chrome
+  summary: >
+    Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
+  upstream_bug: >
+    Chromium#304163
+  origin: >
+    Bootstrap#20143
+
+-
+  browser: >
+    Chrome
+  summary: >
+    Implement the [`:dir()` pseudo-class](https://developer.mozilla.org/en-US/docs/Web/CSS/:dir) from Selectors Level 4
+  upstream_bug: >
+    Chromium#576815
+  origin: >
+    Bootstrap#19984
+
+-
+  browser: >
+    Safari
+  summary: >
+    Fire a [`transitioncancel` event](https://developer.mozilla.org/en-US/docs/Web/Events/transitioncancel) when a CSS transition is canceled
+  upstream_bug: >
+    WebKit#161535
+  origin: >
+    Bootstrap#20618
+
+-
+  browser: >
+    Safari
+  summary: >
+    Implement the [`:dir()` pseudo-class](https://developer.mozilla.org/en-US/docs/Web/CSS/:dir) from Selectors Level 4
+  upstream_bug: >
+    WebKit#64861
+  origin: >
+    Bootstrap#19984
+
+-
+  browser: >
+    Safari
+  summary: >
+    Implement the HTML5 [`<dialog>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog)
+  upstream_bug: >
+    WebKit#84635
+  origin: >
+    Bootstrap#20175
diff --git a/vendor/twbs/bootstrap/site/_data/colors.yml b/vendor/twbs/bootstrap/site/_data/colors.yml
new file mode 100644
index 000000000..202270cdc
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/colors.yml
@@ -0,0 +1,26 @@
+- name: blue
+  hex: "#007bff"
+- name: indigo
+  hex: "#6610f2"
+- name: purple
+  hex: "#6f42c1"
+- name: pink
+  hex: "#e83e8c"
+- name: red
+  hex: "#dc3545"
+- name: orange
+  hex: "#fd7e14"
+- name: yellow
+  hex: "#ffc107"
+- name: green
+  hex: "#28a745"
+- name: teal
+  hex: "#20c997"
+- name: cyan
+  hex: "#17a2b8"
+- name: white
+  hex: "#fff"
+- name: gray
+  hex: "#868e96"
+- name: gray-dark
+  hex: "#343a40"
diff --git a/vendor/twbs/bootstrap/site/_data/examples.yml b/vendor/twbs/bootstrap/site/_data/examples.yml
new file mode 100644
index 000000000..673fde40b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/examples.yml
@@ -0,0 +1,55 @@
+- category: Custom components
+  description: "Brand new components and templates to help folks quickly get started with Bootstrap and demonstrate best practices for adding onto the framework."
+  examples:
+    - name: Album
+      description: "Simple one-page template for photo galleries, portfolios, and more."
+    - name: Pricing
+      description: "Example pricing page built with Cards and featuring a custom header and footer."
+    - name: Checkout
+      description: "Custom checkout form showing our form components and their validation features."
+    - name: Product
+      description: "Lean product-focused marketing page with extensive grid and image work."
+    - name: Cover
+      description: "A one-page template for building simple and beautiful home pages."
+    - name: Carousel
+      description: "Customize the navbar and carousel, then add some new components."
+    - name: Blog
+      description: "Magazine like blog template with header, navigation, featured content."
+    - name: Dashboard
+      description: "Basic admin dashboard shell with fixed sidebar and navbar."
+    - name: Sign-in
+      description: "Custom form layout and design for a simple sign in form."
+    - name: Sticky footer
+      description: "Attach a footer to the bottom of the viewport when page content is short."
+    - name: Sticky footer navbar
+      description: "Attach a footer to the bottom of the viewport with a fixed top navbar."
+
+- category: Framework
+  description: "Examples that focus on implementing uses of built-in components provided by Bootstrap."
+  examples:
+    - name: "Starter template"
+      description: "Nothing but the basics: compiled CSS and JavaScript."
+    - name: Grid
+      description: "Multiple examples of grid layouts with all four tiers, nesting, and more."
+    - name: Jumbotron
+      description: "Build around the jumbotron with a navbar and some basic grid columns."
+
+- category: Navbars
+  description: "Taking the default navbar component and showing how it can be moved, placed, and extended."
+  examples:
+    - name: Navbars
+      description: "Demonstration of all responsive and container options for the navbar."
+    - name: Navbar static
+      description: "Single navbar example of a static top navbar along with some additional content."
+    - name: Navbar fixed
+      description: "Single navbar example with a fixed top navbar along with some additional content."
+    - name: Navbar bottom
+      description: "Single navbar example with a bottom navbar along with some additional content."
+
+- category: Experiments
+  description: "Examples that focus on future-friendly features or techniques."
+  examples:
+    - name: Floating labels
+      description: "Beautifully simple forms with floating labels over your inputs."
+    - name: Offcanvas
+      description: "Turn your expandable navbar into a sliding offcanvas menu."
diff --git a/vendor/twbs/bootstrap/site/_data/grays.yml b/vendor/twbs/bootstrap/site/_data/grays.yml
new file mode 100644
index 000000000..d6e50f9e1
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/grays.yml
@@ -0,0 +1,18 @@
+- name: 100
+  hex: "#f8f9fa"
+- name: 200
+  hex: "#e9ecef"
+- name: 300
+  hex: "#dee2e6"
+- name: 400
+  hex: "#ced4da"
+- name: 500
+  hex: "#adb5bd"
+- name: 600
+  hex: "#868e96"
+- name: 700
+  hex: "#495057"
+- name: 800
+  hex: "#343a40"
+- name: 900
+  hex: "#212529"
diff --git a/vendor/twbs/bootstrap/site/_data/nav.yml b/vendor/twbs/bootstrap/site/_data/nav.yml
new file mode 100644
index 000000000..98bd2c5d5
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/nav.yml
@@ -0,0 +1,86 @@
+- title: Getting started
+  pages:
+    - title: Introduction
+    - title: Download
+    - title: Contents
+    - title: Browsers & devices
+    - title: JavaScript
+    - title: Theming
+    - title: Build tools
+    # - title: Best practices # TODO: Write this content
+    - title: Webpack
+    - title: Accessibility
+
+- title: Layout
+  pages:
+    - title: Overview
+    - title: Grid
+    - title: Media object
+    - title: Utilities for layout
+
+- title: Content
+  pages:
+    - title: Reboot
+    - title: Typography
+    - title: Code
+    - title: Images
+    - title: Tables
+    - title: Figures
+
+- title: Components
+  pages:
+    - title: Alerts
+    - title: Badge
+    - title: Breadcrumb
+    - title: Buttons
+    - title: Button group
+    - title: Card
+    - title: Carousel
+    - title: Collapse
+    - title: Dropdowns
+    - title: Forms
+    - title: Input group
+    - title: Jumbotron
+    - title: List group
+    - title: Modal
+    - title: Navs
+    - title: Navbar
+    - title: Pagination
+    - title: Popovers
+    - title: Progress
+    - title: Scrollspy
+    - title: Tooltips
+
+- title: Utilities
+  pages:
+    - title: Borders
+    - title: Clearfix
+    - title: Close icon
+    - title: Colors
+    - title: Display
+    - title: Embed
+    - title: Flex
+    - title: Float
+    - title: Image replacement
+    - title: Position
+    - title: Screenreaders
+    - title: Shadows
+    - title: Sizing
+    - title: Spacing
+    - title: Text
+    - title: Vertical align
+    - title: Visibility
+
+- title: Extend
+  pages:
+    - title: Approach
+    - title: Icons
+
+- title: Migration
+
+- title: About
+  pages:
+    - title: Overview
+    - title: Brand
+    - title: License
+    - title: Translations
diff --git a/vendor/twbs/bootstrap/site/_data/theme-colors.yml b/vendor/twbs/bootstrap/site/_data/theme-colors.yml
new file mode 100644
index 000000000..bef5002ac
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/theme-colors.yml
@@ -0,0 +1,16 @@
+- name: primary
+  hex: "#007bff"
+- name: secondary
+  hex: "#868e96"
+- name: success
+  hex: "#28a745"
+- name: danger
+  hex: "#dc3545"
+- name: warning
+  hex: "#ffc107"
+- name: info
+  hex: "#17a2b8"
+- name: light
+  hex: "#f8f9fa"
+- name: dark
+  hex: "#343a40"
diff --git a/vendor/twbs/bootstrap/site/_data/translations.yml b/vendor/twbs/bootstrap/site/_data/translations.yml
new file mode 100644
index 000000000..38b5771c4
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_data/translations.yml
@@ -0,0 +1,19 @@
+- name: 中文(繁體)
+  code: zh-tw
+  description: Bootstrap 4 繁體中文手冊
+  url: http://bootstrap.hexschool.com/
+
+- name: Chinese
+  code: zh
+  description: Bootstrap 4 · 全球最流行的 HTML、CSS 和 JS 工具库。
+  url: https://code.z01.com/v4
+
+- name: Chinese
+  code: zh
+  description: Bootstrap 4 中文文档教程
+  url: https://wiki.jikexueyuan.com/project/bootstrap4/
+
+- name: Brazilian Portuguese
+  code: pt-BR
+  description: Bootstrap 4 Português do Brasil
+  url: http://getbootstrap.com.br/v4/
diff --git a/vendor/twbs/bootstrap/site/_includes/ads.html b/vendor/twbs/bootstrap/site/_includes/ads.html
new file mode 100644
index 000000000..bbb967141
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/ads.html
@@ -0,0 +1 @@
+<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
diff --git a/vendor/twbs/bootstrap/site/_includes/bugify.html b/vendor/twbs/bootstrap/site/_includes/bugify.html
new file mode 100644
index 000000000..6a02bd23e
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/bugify.html
@@ -0,0 +1,42 @@
+{%- comment -%}
+Usage: {% include bugify.html content=text %},
+where content is a string that contains a bug reference name and id.
+e.g. Bootstrap#19984
+{%- endcomment -%}
+
+{%- assign words = include.content | split: " " -%}
+
+{%- for word in words -%}
+  {% if word contains "#" %}
+    {% if word contains "," %}{% assign separator = true %}{% else %}{% assign separator = false %}{% endif %}
+    {%- assign data = word | split: "#" -%}
+    {%- assign bug_cat = data[0] | strip_newlines -%}
+    {%- assign bug_id  = data[1] | strip_newlines | remove: "," -%}
+
+    {%- case bug_cat -%}
+    {%- when "Bootstrap" -%}
+      <a href="https://github.com/twbs/bootstrap/issues/{{ bug_id }}">#{{ bug_id }}</a>
+    {%- when "Edge" -%}
+      <a href="https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/{{ bug_id }}">Edge issue #{{ bug_id }}</a>
+    {%- when "A11yUserVoice" -%}
+      <a href="https://microsoftaccessibility.uservoice.com/forums/307429-microsoft-accessibility-feedback/suggestions/{{ bug_id }}">Microsoft A11y UserVoice idea #{{ bug_id }}</a>
+    {%- when "UserVoice" -%}
+      <a href="https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/{{ bug_id }}">Edge UserVoice idea #{{ bug_id }}</a>
+    {%- when "Mozilla" -%}
+      <a href="https://bugzilla.mozilla.org/show_bug.cgi?id={{ bug_id }}">Mozilla bug #{{ bug_id }}</a>
+    {%- when "Chromium" -%}
+      <a href="https://bugs.chromium.org/p/chromium/issues/detail?id={{ bug_id }}">Chromium issue #{{ bug_id }}</a>
+    {%- when "WebKit" -%}
+      <a href="https://bugs.webkit.org/show_bug.cgi?id={{ bug_id }}">WebKit bug #{{ bug_id }}</a>
+    {%- when "Safari" -%}
+      <a href="https://openradar.appspot.com/{{ bug_id }}">Apple Safari Radar #{{ bug_id }}</a>
+    {%- when "Normalize" -%}
+      <a href="https://github.com/necolas/normalize.css/issues/{{ bug_id }}">Normalize #{{ bug_id }}</a>
+    {%- else -%}
+      <strong>parse error</strong>
+    {%- endcase -%}{% if separator %}, {% endif %}
+
+  {% else %}
+    {{ word }}
+  {%- endif -%}
+{%- endfor -%}
diff --git a/vendor/twbs/bootstrap/site/_includes/callout-danger-async-methods.md b/vendor/twbs/bootstrap/site/_includes/callout-danger-async-methods.md
new file mode 100644
index 000000000..ca35e0b77
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/callout-danger-async-methods.md
@@ -0,0 +1,8 @@
+{% capture callout %}
+#### Asynchronous methods and transitions
+
+All API methods are **asynchronous** and start a **transition**. They return to the caller as soon as the transition is started but **before it ends**. In addition, a method call on a **transitioning component will be ignored**.
+
+[See our JavaScript documentation for more information.]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/)
+{% endcapture %}
+{% include callout.html content=callout type="danger" %}
diff --git a/vendor/twbs/bootstrap/site/_includes/callout-info-mediaqueries-breakpoints.md b/vendor/twbs/bootstrap/site/_includes/callout-info-mediaqueries-breakpoints.md
new file mode 100644
index 000000000..d3988ce1a
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/callout-info-mediaqueries-breakpoints.md
@@ -0,0 +1,4 @@
+{% capture callout %}
+Note that since browsers do not currently support [range context queries](https://www.w3.org/TR/mediaqueries-4/#range-context), we work around the limitations of [`min-` and `max-` prefixes](https://www.w3.org/TR/mediaqueries-4/#mq-min-max) and viewports with fractional widths (which can occur under certain conditions on high-dpi devices, for instance) by using values with higher precision for these comparisons.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
diff --git a/vendor/twbs/bootstrap/site/_includes/callout-warning-color-assistive-technologies.md b/vendor/twbs/bootstrap/site/_includes/callout-warning-color-assistive-technologies.md
new file mode 100644
index 000000000..98214eb58
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/callout-warning-color-assistive-technologies.md
@@ -0,0 +1,6 @@
+{% capture callout %}
+##### Conveying meaning to assistive technologies
+
+Using color to add meaning only provides a visual indication, which will not be conveyed to users of assistive technologies – such as screen readers. Ensure that information denoted by the color is either obvious from the content itself (e.g. the visible text), or is included through alternative means, such as additional text hidden with the `.sr-only` class.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
diff --git a/vendor/twbs/bootstrap/site/_includes/callout.html b/vendor/twbs/bootstrap/site/_includes/callout.html
new file mode 100644
index 000000000..ff9450dc4
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/callout.html
@@ -0,0 +1,9 @@
+{%- comment -%}
+Usage: {% include callout.html content=callout type="type" %},
+where content is a capture with the content
+and type is one of: info (default), danger, warning
+{%- endcomment -%}
+{%- assign css_class = include.type | default: "info" -%}
+<div class="bd-callout bd-callout-{{ css_class }}">
+  {{- include.content | markdownify -}}
+</div>
diff --git a/vendor/twbs/bootstrap/site/_includes/docs-navbar.html b/vendor/twbs/bootstrap/site/_includes/docs-navbar.html
new file mode 100644
index 000000000..cb442bd53
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/docs-navbar.html
@@ -0,0 +1,62 @@
+<header class="navbar navbar-expand navbar-dark flex-column flex-md-row bd-navbar">
+  <a class="navbar-brand mr-0 mr-md-2" href="{{ site.baseurl }}/" aria-label="Bootstrap">
+    {%- include icons/bootstrap.svg width="36" height="36" class="d-block" -%}
+  </a>
+
+  <div class="navbar-nav-scroll">
+    <ul class="navbar-nav bd-navbar-nav flex-row">
+      <li class="nav-item">
+        <a class="nav-link {% if page.layout == "home" %}active{% endif %}" href="{{ site.baseurl }}/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Bootstrap');">Home</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link {% if page.layout == "docs" %}active{% endif %}" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/introduction/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Docs');">Documentation</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link {% if page.title == "Examples" %}active{% endif %}" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/examples/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Examples');">Examples</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="{{ site.themes }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Themes');" target="_blank" rel="noopener">Themes</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="{{ site.expo }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Expo');" target="_blank" rel="noopener">Expo</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="{{ site.blog }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Blog');" target="_blank" rel="noopener">Blog</a>
+      </li>
+    </ul>
+  </div>
+
+  <ul class="navbar-nav flex-row ml-md-auto d-none d-md-flex">
+    <li class="nav-item dropdown">
+      <a class="nav-item nav-link dropdown-toggle mr-md-2" href="#" id="bd-versions" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        v{{ site.docs_version }}
+      </a>
+      <div class="dropdown-menu dropdown-menu-right" aria-labelledby="bd-versions">
+        <a class="dropdown-item active" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/">Latest (4.1.x)</a>
+        <a class="dropdown-item" href="https://getbootstrap.com/docs/4.0/">v4.0.0</a>
+        <div class="dropdown-divider"></div>
+        <a class="dropdown-item" href="https://v4-alpha.getbootstrap.com/">v4 Alpha 6</a>
+        <a class="dropdown-item" href="https://getbootstrap.com/docs/3.3/">v3.3.7</a>
+        <a class="dropdown-item" href="https://getbootstrap.com/2.3.2/">v2.3.2</a>
+      </div>
+    </li>
+
+    <li class="nav-item">
+      <a class="nav-link p-2" href="{{ site.repo }}" target="_blank" rel="noopener" aria-label="GitHub">
+        {%- include icons/github.svg class="navbar-nav-svg" -%}
+      </a>
+    </li>
+    <li class="nav-item">
+      <a class="nav-link p-2" href="https://twitter.com/{{ site.twitter }}" target="_blank" rel="noopener" aria-label="Twitter">
+        {%- include icons/twitter.svg class="navbar-nav-svg" -%}
+      </a>
+    </li>
+    <li class="nav-item">
+      <a class="nav-link p-2" href="{{ site.slack }}" target="_blank" rel="noopener" aria-label="Slack">
+        {%- include icons/slack.svg class="navbar-nav-svg" -%}
+      </a>
+    </li>
+  </ul>
+
+  <a class="btn btn-bd-download d-none d-lg-inline-block mb-3 mb-md-0 ml-md-3" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/">Download</a>
+</header>
diff --git a/vendor/twbs/bootstrap/site/_includes/docs-sidebar.html b/vendor/twbs/bootstrap/site/_includes/docs-sidebar.html
new file mode 100644
index 000000000..61edd8ec1
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/docs-sidebar.html
@@ -0,0 +1,57 @@
+<form class="bd-search d-flex align-items-center">
+  <input type="search" class="form-control" id="search-input" placeholder="Search..." aria-label="Search for..." autocomplete="off" data-siteurl="{{ site.url }}" data-docs-version="{{ site.docs_version }}">
+  <button class="btn btn-link bd-search-docs-toggle d-md-none p-0 ml-3" type="button" data-toggle="collapse" data-target="#bd-docs-nav" aria-controls="bd-docs-nav" aria-expanded="false" aria-label="Toggle docs navigation">
+    {%- include icons/menu.svg width="30" height="30" -%}
+  </button>
+</form>
+
+<nav class="collapse bd-links" id="bd-docs-nav">
+  {%- assign page_slug = page.url | split: '/' | last -%}
+  {%- for group in site.data.nav -%}
+  {%- assign link = group.pages | first -%}
+  {%- assign link_slug = link.title | slugify -%}
+  {%- assign group_slug = group.title | slugify -%}
+  {%- assign active = nil -%}
+
+  {%- if page.group == group_slug -%}
+    {%- assign active = 'active' -%}
+  {%- endif -%}
+
+  <div class="bd-toc-item{% unless active == nil %} {{ active }}{% endunless %}">
+      <a class="bd-toc-link" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/{{ group_slug }}/{{ link_slug }}{% if link_slug %}/{% endif %}">
+        {{ group.title }}
+      </a>
+
+      <ul class="nav bd-sidenav">
+        {%- for doc in group.pages -%}
+          {%- assign doc_slug = doc.title | slugify -%}
+          {%- assign active = nil -%}
+
+          {%- if page.group == group_slug and page_slug == doc_slug -%}
+            {%- assign active = 'active bd-sidenav-active' -%}
+          {%- endif -%}
+
+          <li{% unless active == nil %} class="{{ active }}"{% endunless %}>
+            <a href="{{ site.baseurl }}/docs/{{ site.docs_version }}/{{ group_slug }}/{{ doc_slug }}/">
+              {{ doc.title }}
+            </a>
+
+            {%- comment -%}
+            {% unless doc.sections == nil %}
+              <ul class="nav">
+                {% for section in doc.sections %}
+                  <li>
+                    <a href="#{{ section.title | downcase | replace: ' ', '-' }}">
+                      {{ section.title }}
+                    </a>
+                  </li>
+                {% endfor %}
+              </ul>
+            {% endunless %}
+            {%- endcomment -%}
+          </li>
+        {%- endfor -%}
+      </ul>
+    </div>
+  {%- endfor -%}
+</nav>
diff --git a/vendor/twbs/bootstrap/site/_includes/example.html b/vendor/twbs/bootstrap/site/_includes/example.html
new file mode 100644
index 000000000..24d12626b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/example.html
@@ -0,0 +1,23 @@
+{%- comment -%}
+Usage: {% include example.html content=markup %},
+where content is a capture with the HTML content
+id - null (default)
+class - "bd-example" (default)
+optional: hide_preview - disabled (default)
+optional: hide_markup - disabled (default)
+{%- endcomment -%}
+
+{%- assign preview_id = include.id -%}
+{%- assign preview_class = include.class -%}
+
+{%- if include.hide_preview == null -%}
+<div{% if preview_id %} id="{{ preview_id }}"{% endif %} class="bd-example{% if preview_class %} {{ preview_class }}{% endif %}">
+  {{- include.content -}}
+</div>
+{%- endif -%}
+
+{%- if include.hide_markup == null -%}
+  {%- highlight html -%}
+    {{- include.content | replace: 'data-src="holder.js', 'src="...' -}}
+  {%- endhighlight -%}
+{%- endif -%}
diff --git a/vendor/twbs/bootstrap/site/_includes/favicons.html b/vendor/twbs/bootstrap/site/_includes/favicons.html
new file mode 100644
index 000000000..df4c15e64
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/favicons.html
@@ -0,0 +1,9 @@
+<!-- Favicons -->
+<link rel="apple-touch-icon" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/apple-touch-icon.png" sizes="180x180">
+<link rel="icon" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/favicon-32x32.png" sizes="32x32" type="image/png">
+<link rel="icon" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/favicon-16x16.png" sizes="16x16" type="image/png">
+<link rel="manifest" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/manifest.json">
+<link rel="mask-icon" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/safari-pinned-tab.svg" color="#563d7c">
+<link rel="icon" href="{{ site.baseurl }}/favicon.ico">
+<meta name="msapplication-config" content="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/browserconfig.xml">
+<meta name="theme-color" content="#563d7c">
diff --git a/vendor/twbs/bootstrap/site/_includes/footer.html b/vendor/twbs/bootstrap/site/_includes/footer.html
new file mode 100644
index 000000000..8e16577c1
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/footer.html
@@ -0,0 +1,12 @@
+<footer class="bd-footer text-muted">
+  <div class="container-fluid p-3 p-md-5">
+    <ul class="bd-footer-links">
+      <li><a href="{{ site.repo }}">GitHub</a></li>
+      <li><a href="https://twitter.com/getbootstrap">Twitter</a></li>
+      <li><a href="{{ site.baseurl }}/docs/{{ site.docs_version }}/examples/">Examples</a></li>
+      <li><a href="{{ site.baseurl }}/docs/{{ site.docs_version }}/about/overview/">About</a></li>
+    </ul>
+    <p>Designed and built with all the love in the world by <a href="https://twitter.com/mdo" target="_blank" rel="noopener">@mdo</a> and <a href="https://twitter.com/fat" target="_blank" rel="noopener">@fat</a>. Maintained by the <a href="https://github.com/orgs/twbs/people">core team</a> with the help of <a href="https://github.com/twbs/bootstrap/graphs/contributors">our contributors</a>.</p>
+    <p>Currently v{{ site.current_version }}. Code licensed <a href="https://github.com/twbs/bootstrap/blob/master/LICENSE" target="_blank" rel="license noopener">MIT</a>, docs <a href="https://creativecommons.org/licenses/by/3.0/" target="_blank" rel="license noopener">CC BY 3.0</a>.</p>
+  </div>
+</footer>
diff --git a/vendor/twbs/bootstrap/site/_includes/header.html b/vendor/twbs/bootstrap/site/_includes/header.html
new file mode 100644
index 000000000..b92a5790a
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/header.html
@@ -0,0 +1,37 @@
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+<meta name="description" content="{{ page.description | default: site.description | smartify }}">
+<meta name="author" content="{{ site.authors }}">
+<meta name="generator" content="Jekyll v{{ jekyll.version }}">
+
+<title>
+  {%- if page.title -%}
+    {{ page.title | smartify }} · {{ site.title | smartify }}
+  {%- else -%}
+    {{ site.title | smartify }} · {{ site.description | smartify }}
+  {%- endif -%}
+</title>
+
+<!-- Bootstrap core CSS -->
+{% if site.github %}
+<link href="{{ site.baseurl }}/docs/{{ site.docs_version }}/dist/css/bootstrap.min.css" rel="stylesheet" integrity="{{ site.cdn.css_hash }}" crossorigin="anonymous">
+{% else %}
+<link href="{{ site.baseurl }}/docs/{{ site.docs_version }}/dist/css/bootstrap.css" rel="stylesheet">
+{% endif %}
+
+<!-- Documentation extras -->
+{% if page.layout == "docs" %}
+<link href="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.css" rel="stylesheet">
+{% endif %}
+<link href="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/css/docs.min.css" rel="stylesheet">
+
+{% include favicons.html %}
+
+{% include social.html %}
+
+<script>
+  window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
+  ga('create', 'UA-146052-10', 'getbootstrap.com');
+  ga('send', 'pageview');
+</script>
+<script async src='https://www.google-analytics.com/analytics.js'></script>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/bootstrap.svg b/vendor/twbs/bootstrap/site/_includes/icons/bootstrap.svg
new file mode 100644
index 000000000..816028bd8
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/bootstrap.svg
@@ -0,0 +1 @@
+<svg{% if include.class %} class="{{ include.class }}"{% endif %}{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} viewbox="0 0 612 612" xmlns="http://www.w3.org/2000/svg" focusable="false"><title>Bootstrap</title><path fill="currentColor" d="M510 8a94.3 94.3 0 0 1 94 94v408a94.3 94.3 0 0 1-94 94H102a94.3 94.3 0 0 1-94-94V102a94.3 94.3 0 0 1 94-94h408m0-8H102C45.9 0 0 45.9 0 102v408c0 56.1 45.9 102 102 102h408c56.1 0 102-45.9 102-102V102C612 45.9 566.1 0 510 0z"/><path fill="currentColor" d="M196.77 471.5V154.43h124.15c54.27 0 91 31.64 91 79.1 0 33-24.17 63.72-54.71 69.21v1.76c43.07 5.49 70.75 35.82 70.75 78 0 55.81-40 89-107.45 89zm39.55-180.4h63.28c46.8 0 72.29-18.68 72.29-53 0-31.42-21.53-48.78-60-48.78h-75.57zm78.22 145.46c47.68 0 72.73-19.34 72.73-56s-25.93-55.37-76.46-55.37h-74.49v111.4z"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/download.svg b/vendor/twbs/bootstrap/site/_includes/icons/download.svg
new file mode 100644
index 000000000..aa5f3f1be
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/download.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" focusable="false"{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} fill="none" stroke="currentcolor" stroke-width="2"{% if include.class %} class="{{ include.class }}"{% endif %} viewBox="0 0 32 32" stroke-linecap="round" stroke-linejoin="round"><title>Download icon</title><path d="M9 22c-9 1-8-10 0-9C6 2 23 2 22 10c10-3 10 13 1 12m-12 4l5 4 5-4m-5-10v14"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/github.svg b/vendor/twbs/bootstrap/site/_includes/icons/github.svg
new file mode 100644
index 000000000..5d6ad1804
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/github.svg
@@ -0,0 +1 @@
+<svg{% if include.class %} class="{{ include.class }}"{% endif %} xmlns="http://www.w3.org/2000/svg" viewbox="0 0 512 499.36"{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} focusable="false"><title>GitHub</title><path d="M256 0C114.64 0 0 114.61 0 256c0 113.09 73.34 209 175.08 242.9 12.8 2.35 17.47-5.56 17.47-12.34 0-6.08-.22-22.18-.35-43.54-71.2 15.49-86.2-34.34-86.2-34.34-11.64-29.57-28.42-37.45-28.42-37.45-23.27-15.84 1.73-15.55 1.73-15.55 25.69 1.81 39.21 26.38 39.21 26.38 22.84 39.12 59.92 27.82 74.5 21.27 2.33-16.54 8.94-27.82 16.25-34.22-56.84-6.43-116.6-28.43-116.6-126.49 0-27.95 10-50.8 26.35-68.69-2.63-6.48-11.42-32.5 2.51-67.75 0 0 21.49-6.88 70.4 26.24a242.65 242.65 0 0 1 128.18 0c48.87-33.13 70.33-26.24 70.33-26.24 14 35.25 5.18 61.27 2.55 67.75 16.41 17.9 26.31 40.75 26.31 68.69 0 98.35-59.85 120-116.88 126.32 9.19 7.9 17.38 23.53 17.38 47.41 0 34.22-.31 61.83-.31 70.23 0 6.85 4.61 14.81 17.6 12.31C438.72 464.97 512 369.08 512 256.02 512 114.62 397.37 0 256 0z" fill="currentColor" fill-rule="evenodd"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/import.svg b/vendor/twbs/bootstrap/site/_includes/icons/import.svg
new file mode 100644
index 000000000..0a9dbb269
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/import.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" focusable="false"{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} fill="none" stroke="currentcolor" stroke-width="2"{% if include.class %} class="{{ include.class }}"{% endif %} viewBox="0 0 32 32" stroke-linecap="round" stroke-linejoin="round"><title>Import icon</title><path d="M28 22v8H4v-8M16 4v20m-8-8l8 8 8-8"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/lightning.svg b/vendor/twbs/bootstrap/site/_includes/icons/lightning.svg
new file mode 100644
index 000000000..be6f475ef
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/lightning.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" focusable="false"{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} fill="none" stroke="currentcolor" stroke-width="2"{% if include.class %} class="{{ include.class }}"{% endif %} viewBox="0 0 32 32" stroke-linecap="round" stroke-linejoin="round"><title>Lightning icon</title><path d="M18 13l8-11L8 13l6 6-8 11 18-11z"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/menu.svg b/vendor/twbs/bootstrap/site/_includes/icons/menu.svg
new file mode 100644
index 000000000..03e15dc49
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/menu.svg
@@ -0,0 +1 @@
+<svg{% if include.class %} class="{{ include.class }}"{% endif %} xmlns="http://www.w3.org/2000/svg" viewbox="0 0 30 30"{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} focusable="false"><title>Menu</title><path stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-miterlimit="10" d="M4 7h22M4 15h22M4 23h22"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/slack.svg b/vendor/twbs/bootstrap/site/_includes/icons/slack.svg
new file mode 100644
index 000000000..3927fa458
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/slack.svg
@@ -0,0 +1 @@
+<svg{% if include.class %} class="{{ include.class }}"{% endif %} xmlns="http://www.w3.org/2000/svg" viewbox="0 0 512 512"{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} focusable="false"><title>Slack</title><path fill="currentColor" d="M210.787 234.832l68.31-22.883 22.1 65.977-68.309 22.882z"/><path d="M490.54 185.6C437.7 9.59 361.6-31.34 185.6 21.46S-31.3 150.4 21.46 326.4 150.4 543.3 326.4 490.54 543.34 361.6 490.54 185.6zM401.7 299.8l-33.15 11.05 11.46 34.38c4.5 13.92-2.87 29.06-16.78 33.56-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18l-11.46-34.38-68.36 22.92 11.46 34.38c4.5 13.92-2.87 29.06-16.78 33.56-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18l-11.46-34.43-33.15 11.05c-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18c-4.5-13.92 2.87-29.06 16.78-33.56l33.12-11.03-22.1-65.9-33.15 11.05c-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18c-4.48-13.93 2.89-29.07 16.81-33.58l33.15-11.05-11.46-34.38c-4.5-13.92 2.87-29.06 16.78-33.56s29.06 2.87 33.56 16.78l11.46 34.38 68.36-22.92-11.46-34.38c-4.5-13.92 2.87-29.06 16.78-33.56s29.06 2.87 33.56 16.78l11.47 34.42 33.15-11.05c13.92-4.5 29.06 2.87 33.56 16.78s-2.87 29.06-16.78 33.56L329.7 194.6l22.1 65.9 33.15-11.05c13.92-4.5 29.06 2.87 33.56 16.78s-2.88 29.07-16.81 33.57z" fill="currentColor"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/icons/twitter.svg b/vendor/twbs/bootstrap/site/_includes/icons/twitter.svg
new file mode 100644
index 000000000..450c393b9
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/icons/twitter.svg
@@ -0,0 +1 @@
+<svg{% if include.class %} class="{{ include.class }}"{% endif %} xmlns="http://www.w3.org/2000/svg" viewbox="0 0 512 416.32"{% if include.width %} width="{{ include.width }}"{% endif %}{% if include.height %} height="{{ include.height }}"{% endif %} focusable="false"><title>Twitter</title><path d="M160.83 416.32c193.2 0 298.92-160.22 298.92-298.92 0-4.51 0-9-.2-13.52A214 214 0 0 0 512 49.38a212.93 212.93 0 0 1-60.44 16.6 105.7 105.7 0 0 0 46.3-58.19 209 209 0 0 1-66.79 25.37 105.09 105.09 0 0 0-181.73 71.91 116.12 116.12 0 0 0 2.66 24c-87.28-4.3-164.73-46.3-216.56-109.82A105.48 105.48 0 0 0 68 159.6a106.27 106.27 0 0 1-47.53-13.11v1.43a105.28 105.28 0 0 0 84.21 103.06 105.67 105.67 0 0 1-47.33 1.84 105.06 105.06 0 0 0 98.14 72.94A210.72 210.72 0 0 1 25 370.84a202.17 202.17 0 0 1-25-1.43 298.85 298.85 0 0 0 160.83 46.92" fill="currentColor"/></svg>
diff --git a/vendor/twbs/bootstrap/site/_includes/scripts.html b/vendor/twbs/bootstrap/site/_includes/scripts.html
new file mode 100644
index 000000000..92c6d01cd
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/scripts.html
@@ -0,0 +1,26 @@
+<script src="{{ site.cdn.jquery }}" integrity="{{ site.cdn.jquery_hash }}" crossorigin="anonymous"></script>
+<script>window.jQuery || document.write('<script src="{{ site.baseurl }}/assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+
+<script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/vendor/popper.min.js"{% if site.github %} integrity="{{ site.cdn.popper_hash }}" crossorigin="anonymous"{% endif %}></script>
+
+{%- if site.github -%}
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/dist/js/bootstrap.min.js" integrity="{{ site.cdn.js_hash }}" crossorigin="anonymous"></script>
+{%- else -%}
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/dist/js/bootstrap.js"></script>
+{%- endif -%}
+
+{%- if page.layout == "docs" -%}
+<script src="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.js"></script>
+{%- endif -%}
+
+{%- if site.github -%}
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/docs.min.js"></script>
+{%- else -%}
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/vendor/anchor.min.js"></script>
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/vendor/clipboard.min.js"></script>
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/vendor/holder.min.js"></script>
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/src/application.js"></script>
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/src/search.js"></script>
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/src/ie-emulation-modes-warning.js"></script>
+  <script src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/js/src/pwa.js"></script>
+{%- endif -%}
diff --git a/vendor/twbs/bootstrap/site/_includes/skippy.html b/vendor/twbs/bootstrap/site/_includes/skippy.html
new file mode 100644
index 000000000..2c73089bc
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/skippy.html
@@ -0,0 +1,5 @@
+<a id="skippy" class="sr-only sr-only-focusable" href="#content">
+  <div class="container">
+    <span class="skiplink-text">Skip to main content</span>
+  </div>
+</a>
diff --git a/vendor/twbs/bootstrap/site/_includes/social.html b/vendor/twbs/bootstrap/site/_includes/social.html
new file mode 100644
index 000000000..277ee2313
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_includes/social.html
@@ -0,0 +1,18 @@
+<!-- Twitter -->
+<meta name="twitter:card" content="{% if page.title %}summary{% else %}summary_large_image{% endif %}">
+<meta name="twitter:site" content="@{{ site.twitter }}">
+<meta name="twitter:creator" content="@{{ site.twitter }}">
+<meta name="twitter:title" content="{{ page.title | default: site.title | smartify }}">
+<meta name="twitter:description" content="{{ page.description | default: site.description | smartify }}">
+<meta name="twitter:image" content="{% if page.title %}{{ site.url | append: site.social_logo_path }}{% else %}{{ site.url | append: site.social_image_path }}{% endif %}">
+
+<!-- Facebook -->
+<meta property="og:url" content="{{ site.url | append: page.url }}">
+<meta property="og:title" content="{{ page.title | default: site.title | smartify }}">
+<meta property="og:description" content="{{ page.description | default: site.description | smartify }}">
+<meta property="og:type" content="website">
+<meta property="og:image" content="{{ site.url | replace: 'https://', 'http://' | append: site.social_image_path }}">
+<meta property="og:image:secure_url" content="{{ site.url | append: site.social_image_path }}">
+<meta property="og:image:type" content="image/png">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
diff --git a/vendor/twbs/bootstrap/site/_layouts/default.html b/vendor/twbs/bootstrap/site/_layouts/default.html
new file mode 100644
index 000000000..28f4cdccb
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_layouts/default.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    {% include header.html %}
+  </head>
+  <body>
+    {% include skippy.html %}
+
+    {% include docs-navbar.html %}
+
+    {% if page.layout == "simple" or page.layout == "examples" %}
+      {{ content }}
+    {% else %}
+      <main id="content" role="main">
+        {{ content }}
+      </main>
+    {% endif %}
+
+    {% include footer.html %}
+    {% include scripts.html %}
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/_layouts/docs.html b/vendor/twbs/bootstrap/site/_layouts/docs.html
new file mode 100644
index 000000000..1d2125508
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_layouts/docs.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    {% include header.html %}
+  </head>
+  <body>
+    {% include skippy.html %}
+
+    {% include docs-navbar.html %}
+
+    <div class="container-fluid">
+      <div class="row flex-xl-nowrap">
+        <div class="col-12 col-md-3 col-xl-2 bd-sidebar">
+          {% include docs-sidebar.html %}
+        </div>
+
+        {% if page.toc %}
+          <div class="d-none d-xl-block col-xl-2 bd-toc">
+            {{ content | toc_only }}
+          </div>
+        {% endif %}
+
+        <main class="col-12 col-md-9 col-xl-8 py-md-3 pl-md-5 bd-content" role="main">
+          <h1 class="bd-title" id="content">{{ page.title | smartify }}</h1>
+          <p class="bd-lead">{{ page.description | smartify }}</p>
+          {% include ads.html %}
+          {{ content }}
+        </main>
+      </div>
+    </div>
+
+    {% include scripts.html %}
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/_layouts/examples.html b/vendor/twbs/bootstrap/site/_layouts/examples.html
new file mode 100644
index 000000000..1f8fbcdec
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_layouts/examples.html
@@ -0,0 +1,16 @@
+---
+layout: default
+---
+
+<header class="d-flex flex-column flex-md-row align-items-md-center p-5 bg-light">
+  <div class="pt-md-3 pb-md-4">
+    <h1 class="bd-title mt-0">{{ page.title | smartify }}</h1>
+    <p class="bd-lead">{{ page.description | smartify }}</p>
+    <a href="{{ site.download.source }}" class="btn btn-lg btn-bd-primary" onclick="ga('send', 'event', 'Examples', 'Hero', 'Download');">Download source code</a>
+  </div>
+  {% include ads.html %}
+</header>
+
+<main class="bd-content p-5" id="content" role="main">
+  {{ content }}
+</main>
diff --git a/vendor/twbs/bootstrap/site/_layouts/redirect.html b/vendor/twbs/bootstrap/site/_layouts/redirect.html
new file mode 100644
index 000000000..a30e77bf4
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_layouts/redirect.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <title>Bootstrap · Content moved</title>
+    <link rel="canonical" href="{{ page.redirect.to }}">
+    <script>window.location="{{ page.redirect.to }}";</script>
+    <meta http-equiv="refresh" content="0; url={{ page.redirect.to }}">
+    <meta name="robots" content="noindex">
+    <style>
+      html {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        margin: 0;
+        width: 100vw;
+        height: 100vh;
+        text-align: center;
+      }
+      body {
+        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+      }
+      h1 {
+        margin-top: 0;
+        margin-bottom: .5rem;
+      }
+      a {
+        color: #007bff;
+        text-decoration: none;
+      }
+    </style>
+  </head>
+  <body>
+    <h1>Redirecting&hellip;</h1>
+    <a href="{{ page.redirect.to }}">Click here if you are not redirected</a>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/_layouts/simple.html b/vendor/twbs/bootstrap/site/_layouts/simple.html
new file mode 100644
index 000000000..dfd9afd16
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/_layouts/simple.html
@@ -0,0 +1,12 @@
+---
+layout: default
+---
+
+<div class="container my-5">
+  <main class="bd-content" role="main">
+    <h1 class="bd-title" id="content">{{ page.title | smartify }}</h1>
+    <p class="bd-lead">{{ page.description | smartify }}</p>
+    {% include ads.html %}
+    {{ content }}
+  </main>
+</div>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/about/brand.md b/vendor/twbs/bootstrap/site/docs/4.1/about/brand.md
new file mode 100644
index 000000000..084c36bd8
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/about/brand.md
@@ -0,0 +1,78 @@
+---
+layout: docs
+title: Brand guidelines
+description: Documentation and examples for Bootstrap's logo and brand usage guidelines.
+group: about
+toc: true
+---
+
+Have a need for Bootstrap's brand resources? Great! We have only a few guidelines we follow, and in turn ask you to follow as well. These guidelines were inspired by MailChimp's [Brand Assets](https://mailchimp.com/about/brand-assets/).
+
+## Mark and logo
+
+Use either the Bootstrap mark (a capital **B**) or the standard logo (just **Bootstrap**). It should always appear in San Francisco Display Semibold. **Do not use the Twitter bird** in association with Bootstrap.
+
+<div class="bd-brand-logos">
+  <div class="bd-brand-item">
+    <img class="svg" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/brand/bootstrap-solid.svg" alt="Bootstrap" width="144" height="144">
+  </div>
+  <div class="bd-brand-item inverse">
+    <img class="svg" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/brand/bootstrap-outline.svg" alt="Bootstrap" width="144" height="144">
+  </div>
+</div>
+<div class="bd-brand-logos">
+  <div class="bd-brand-item">
+    <span class="h1">Bootstrap</span>
+  </div>
+  <div class="bd-brand-item inverse">
+    <span class="h1">Bootstrap</span>
+  </div>
+</div>
+
+## Download mark
+
+Download the Bootstrap mark in one of three styles, each available as an SVG file. Right click, Save as.
+
+<div class="bd-brand-logos">
+  <div class="bd-brand-item">
+    <img class="svg" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/brand/bootstrap-solid.svg" alt="Bootstrap" width="144" height="144">
+  </div>
+  <div class="bd-brand-item inverse">
+    <img class="svg" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/brand/bootstrap-outline.svg" alt="Bootstrap" width="144" height="144">
+  </div>
+  <div class="bd-brand-item inverse">
+    <img class="svg" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/brand/bootstrap-punchout.svg" alt="Bootstrap" width="144" height="144">
+  </div>
+</div>
+
+## Name
+
+The project and framework should always be referred to as **Bootstrap**. No Twitter before it, no capital _s_, and no abbreviations except for one, a capital **B**.
+
+<div class="bd-brand-logos">
+  <div class="bd-brand-item">
+    <span class="h3">Bootstrap</span>
+    <strong class="text-success">Right</strong>
+  </div>
+  <div class="bd-brand-item">
+    <span class="h3 text-muted">BootStrap</span>
+    <strong class="text-warning">Wrong</strong>
+  </div>
+  <div class="bd-brand-item">
+    <span class="h3 text-muted">Twitter Bootstrap</span>
+    <strong class="text-warning">Wrong</strong>
+  </div>
+</div>
+
+## Colors
+
+Our docs and branding use a handful of primary colors to differentiate what *is* Bootstrap from what *is in* Bootstrap. In other words, if it's purple, it's representative of Bootstrap.
+
+<div class="bd-brand">
+  <div class="color-swatches">
+    <div class="color-swatch bd-purple"></div>
+    <div class="color-swatch bd-purple-light"></div>
+    <div class="color-swatch bd-purple-lighter"></div>
+    <div class="color-swatch bd-gray"></div>
+  </div>
+</div>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/about/license.md b/vendor/twbs/bootstrap/site/docs/4.1/about/license.md
new file mode 100644
index 000000000..39720029d
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/about/license.md
@@ -0,0 +1,34 @@
+---
+layout: docs
+title: License FAQs
+description: Commonly asked questions about Bootstrap's open source license.
+group: about
+---
+
+Bootstrap is released under the MIT license and is copyright {{ site.time | date: "%Y" }} Twitter. Boiled down to smaller chunks, it can be described with the following conditions.
+
+#### It requires you to:
+
+* Keep the license and copyright notice included in Bootstrap's CSS and JavaScript files when you use them in your works
+
+#### It permits you to:
+
+- Freely download and use Bootstrap, in whole or in part, for personal, private, company internal, or commercial purposes
+- Use Bootstrap in packages or distributions that you create
+- Modify the source code
+- Grant a sublicense to modify and distribute Bootstrap to third parties not included in the license
+
+#### It forbids you to:
+
+- Hold the authors and license owners liable for damages as Bootstrap is provided without warranty
+- Hold the creators or copyright holders of Bootstrap liable
+- Redistribute any piece of Bootstrap without proper attribution
+- Use any marks owned by Twitter in any way that might state or imply that Twitter endorses your distribution
+- Use any marks owned by Twitter in any way that might state or imply that you created the Twitter software in question
+
+#### It does not require you to:
+
+- Include the source of Bootstrap itself, or of any modifications you may have made to it, in any redistribution you may assemble that includes it
+- Submit changes that you make to Bootstrap back to the Bootstrap project (though such feedback is encouraged)
+
+The full Bootstrap license is located [in the project repository]({{ site.repo }}/blob/v{{ site.current_version }}/LICENSE) for more information.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/about/overview.md b/vendor/twbs/bootstrap/site/docs/4.1/about/overview.md
new file mode 100644
index 000000000..23dd7affe
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/about/overview.md
@@ -0,0 +1,28 @@
+---
+layout: docs
+title: About
+description: Learn more about the team maintaining Bootstrap, how and why the project started, and how to get involved.
+redirect_from:
+  - "/docs/4.1/about/"
+  - "/docs/4.1/history/"
+  - "/docs/4.1/team/"
+group: about
+---
+
+## Team
+
+Bootstrap is maintained by a [small team of developers](https://github.com/orgs/twbs/people) on GitHub. We're actively looking to grow this team and would love to hear from you if you're excited about CSS at scale, writing and maintaining vanilla JavaScript plugins, and improving build tooling processes for frontend code.
+
+## History
+
+Originally created by a designer and a developer at Twitter, Bootstrap has become one of the most popular front-end frameworks and open source projects in the world.
+
+Bootstrap was created at Twitter in mid-2010 by [@mdo](https://twitter.com/mdo) and [@fat](https://twitter.com/fat). Prior to being an open-sourced framework, Bootstrap was known as _Twitter Blueprint_. A few months into development, Twitter held its [first Hack Week](https://blog.twitter.com/2010/hack-week) and the project exploded as developers of all skill levels jumped in without any external guidance. It served as the style guide for internal tools development at the company for over a year before its public release, and continues to do so today.
+
+Originally [released](https://blog.twitter.com/developer/en_us/a/2011/bootstrap-twitter.html) on <time datetime="2011-08-19 11:25">Friday, August 19, 2011</time>, we've since had over [twenty releases]({{ site.repo }}/releases), including two major rewrites with v2 and v3. With Bootstrap 2, we added responsive functionality to the entire framework as an optional stylesheet. Building on that with Bootstrap 3, we rewrote the library once more to make it responsive by default with a mobile first approach.
+
+With Bootstrap 4, we once again rewrote the project to account for two key architectural changes: a migration to Sass and the move to CSS's flexbox. Our intention is to help in a small way to move the web development community forward by pushing for newer CSS properties, fewer dependencies, and new technologies across more modern browsers.
+
+## Get involved
+
+Get involved with Bootstrap development by [opening an issue]({{ site.repo }}/issues/new) or submitting a pull request. Read our [contributing guidelines]({{ site.repo }}/blob/v{{ site.current_version }}/.github/CONTRIBUTING.md) for information on how we develop.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/about/translations.md b/vendor/twbs/bootstrap/site/docs/4.1/about/translations.md
new file mode 100644
index 000000000..576259d35
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/about/translations.md
@@ -0,0 +1,18 @@
+---
+layout: docs
+title: Translations
+description: Links to community-translated Bootstrap documentation sites.
+group: about
+---
+
+Community members have translated Bootstrap's documentation into various languages. None are officially supported and they may not always be up to date.
+
+<ul>
+{% for language in site.data.translations %}
+  <li><a href="{{ language.url }}" hreflang="{{ language.code }}">{{ language.description }} ({{ language.name }})</a></li>
+{% endfor %}
+</ul>
+
+**We don't help organize or host translations, we just link to them.**
+
+Finished a new or better translation? Open a pull request to add it to our list.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-outline.svg b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-outline.svg
new file mode 100644
index 000000000..215be0585
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-outline.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 180 612 612" fill="#FFF">
+  <path d="M510 186c25.5 0 49.6 10 67.8 28.2S606 256.5 606 282v408c0 25.5-10 49.6-28.2 67.8S535.5 786 510 786H102c-25.5 0-49.6-10-67.8-28.2S6 715.5 6 690V282c0-25.5 10-49.6 28.2-67.8S76.5 186 102 186h408m0-6H102C45.9 180 0 225.9 0 282v408c0 56.1 45.9 102 102 102h408c56.1 0 102-45.9 102-102V282c0-56.1-45.9-102-102-102z"/>
+  <path d="M166.3 313h173.5c32 0 57.7 7.3 77 22s29 36.8 29 66.5c0 18-4.4 33.4-13.2 46.2-8.8 12.8-21.4 22.8-37.8 29.8v1c22 4.7 38.7 15.1 50 31.2 11.3 16.2 17 36.4 17 60.8 0 14-2.5 27.1-7.5 39.2-5 12.2-12.8 22.7-23.5 31.5s-24.3 15.8-41 21-36.5 7.8-59.5 7.8h-164V313zm62.5 149.5h102c15 0 27.5-4.2 37.5-12.8s15-20.8 15-36.8c0-18-4.5-30.7-13.5-38s-22-11-39-11h-102v98.6zm0 156.5h110.5c19 0 33.8-4.9 44.2-14.8 10.5-9.8 15.8-23.8 15.8-41.8 0-17.7-5.2-31.2-15.8-40.8s-25.2-14.2-44.2-14.2H228.8V619z"/>
+</svg>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-punchout.svg b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-punchout.svg
new file mode 100644
index 000000000..9f4f529cc
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-punchout.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 180 612 612" fill="#FFF">
+  <path d="M383.5 521.8c-10.5-9.5-25.2-14.2-44.2-14.2H228.8V619h110.5c19 0 33.8-4.9 44.2-14.8 10.5-9.8 15.8-23.8 15.8-41.8-.1-17.6-5.3-31.2-15.8-40.6zm-15.3-72c10-8.5 15-20.8 15-36.8 0-18-4.5-30.7-13.5-38s-22-11-39-11h-102v98.5h102c15 0 27.5-4.3 37.5-12.7z"/>
+  <path d="M510 180H102C45.9 180 0 225.9 0 282v408c0 56.1 45.9 102 102 102h408c56.1 0 102-45.9 102-102V282c0-56.1-45.9-102-102-102zm-55.8 429.8c-5 12.2-12.8 22.7-23.5 31.5s-24.3 15.8-41 21-36.5 7.8-59.5 7.8h-164V313h173.5c32 0 57.7 7.3 77 22s29 36.8 29 66.5c0 18-4.4 33.4-13.2 46.2-8.8 12.8-21.4 22.8-37.8 29.8v1c22 4.7 38.7 15.1 50 31.2 11.3 16.2 17 36.4 17 60.8 0 14-2.5 27.1-7.5 39.3z"/>
+</svg>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-social-logo.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-social-logo.png
new file mode 100644
index 000000000..fdd35e5d4
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-social-logo.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-social.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-social.png
new file mode 100644
index 000000000..468ab5b59
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-social.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-solid.svg b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-solid.svg
new file mode 100644
index 000000000..5d860a70e
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/brand/bootstrap-solid.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 612 612">
+  <path fill="#563D7C" d="M612 510c0 56.1-45.9 102-102 102H102C45.9 612 0 566.1 0 510V102C0 45.9 45.9 0 102 0h408c56.1 0 102 45.9 102 102v408z"/>
+  <path fill="#FFF" d="M166.3 133h173.5c32 0 57.7 7.3 77 22s29 36.8 29 66.5c0 18-4.4 33.4-13.2 46.2-8.8 12.8-21.4 22.8-37.8 29.8v1c22 4.7 38.7 15.1 50 31.2 11.3 16.2 17 36.4 17 60.8 0 14-2.5 27.1-7.5 39.2-5 12.2-12.8 22.7-23.5 31.5s-24.3 15.8-41 21-36.5 7.8-59.5 7.8h-164V133zm62.5 149.5h102c15 0 27.5-4.2 37.5-12.8s15-20.8 15-36.8c0-18-4.5-30.7-13.5-38s-22-11-39-11h-102v98.6zm0 156.5h110.5c19 0 33.8-4.9 44.2-14.8 10.5-9.8 15.8-23.8 15.8-41.8 0-17.7-5.2-31.2-15.8-40.8s-25.2-14.2-44.2-14.2H228.8V439z"/>
+</svg>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/css/docs.min.css b/vendor/twbs/bootstrap/site/docs/4.1/assets/css/docs.min.css
new file mode 100644
index 000000000..d83c39ff6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/css/docs.min.css
@@ -0,0 +1,8 @@
+/*!
+ * Bootstrap Docs (https://getbootstrap.com/)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under the Creative Commons Attribution 3.0 Unported License. For
+ * details, see https://creativecommons.org/licenses/by/3.0/.
+ */.bd-navbar{min-height:4rem;background-color:#563d7c;box-shadow:0 .5rem 1rem rgba(0,0,0,.05),inset 0 -1px 0 rgba(0,0,0,.1)}@media (max-width:991.98px){.bd-navbar{padding-right:.5rem;padding-left:.5rem}.bd-navbar .navbar-nav-scroll{max-width:100%;height:2.5rem;margin-top:.25rem;overflow:hidden;font-size:.875rem}.bd-navbar .navbar-nav-scroll .navbar-nav{padding-bottom:2rem;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}}@media (min-width:768px){@supports ((position:-webkit-sticky) or (position:sticky)){.bd-navbar{position:-webkit-sticky;position:sticky;top:0;z-index:1071}}}.bd-navbar .navbar-nav .nav-link{padding-right:.5rem;padding-left:.5rem;color:#cbbde2}.bd-navbar .navbar-nav .nav-link.active,.bd-navbar .navbar-nav .nav-link:hover{color:#fff;background-color:transparent}.bd-navbar .navbar-nav .nav-link.active{font-weight:500}.bd-navbar .navbar-nav-svg{display:inline-block;width:1rem;height:1rem;vertical-align:text-top}.bd-navbar 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* Bootstrap Docs (https://getbootstrap.com/)\n * Copyright 2011-2018 The Bootstrap Authors\n * Copyright 2011-2018 Twitter, Inc.\n * Licensed under the Creative Commons Attribution 3.0 Unported License. For\n * details, see https://creativecommons.org/licenses/by/3.0/.\n */\n\n// Dev notes\n//\n// Background information on nomenclature and architecture decisions here.\n//\n// - Bootstrap functions, variables, and mixins are included for easy reuse.\n//   Doing so gives us access to the same core utilities provided by Bootstrap.\n//   For example, consistent media queries through those mixins.\n//\n// - Bootstrap's **docs variables** are prefixed with `$bd-`.\n//   These custom colors avoid collision with the components Bootstrap provides.\n//\n// - Classes are prefixed with `.bd-`.\n//   These classes indicate custom-built or modified components for the design\n//   and layout of the Bootstrap docs. They are not included in our builds.\n//\n// Happy Bootstrapping!\n\n// Load Bootstrap variables and mixins\n@import \"../../../../../scss/functions\";\n@import \"../../../../../scss/variables\";\n@import \"../../../../../scss/mixins\";\n\n// Load docs components\n@import \"variables\";\n@import \"nav\";\n@import \"masthead\";\n@import \"ads\";\n@import \"content\";\n@import \"skiplink\";\n@import \"sidebar\";\n@import \"footer\";\n@import \"component-examples\";\n@import \"buttons\";\n@import \"callouts\";\n@import \"examples\";\n@import \"browser-bugs\";\n@import \"brand\";\n@import \"colors\";\n@import \"clipboard-js\";\n\n// Load docs dependencies\n@import \"syntax\";\n@import \"anchor\";\n@import \"algolia\";\n","//\n// Main navbar\n//\n\n.bd-navbar {\n  min-height: 4rem;\n  background-color: $bd-purple;\n  box-shadow: 0 .5rem 1rem rgba(0, 0, 0, .05), inset 0 -1px 0 rgba(0, 0, 0, .1);\n\n  @include media-breakpoint-down(md) {\n    padding-right: .5rem;\n    padding-left: .5rem;\n\n    .navbar-nav-scroll {\n      max-width: 100%;\n      height: 2.5rem;\n      margin-top: .25rem;\n      overflow: hidden;\n      font-size: .875rem;\n\n      .navbar-nav {\n        padding-bottom: 2rem;\n        overflow-x: auto;\n        white-space: nowrap;\n        -webkit-overflow-scrolling: touch;\n      }\n    }\n  }\n\n  @include media-breakpoint-up(md) {\n    @supports (position: sticky) {\n      position: sticky;\n      top: 0;\n      z-index: 1071; // over everything in bootstrap\n    }\n  }\n\n  .navbar-nav {\n    .nav-link {\n      padding-right: .5rem;\n      padding-left: .5rem;\n      color: $bd-purple-light;\n\n      &.active,\n      &:hover {\n        color: #fff;\n        background-color: transparent;\n      }\n\n      &.active {\n        font-weight: 500;\n      }\n    }\n  }\n\n  .navbar-nav-svg {\n    display: inline-block;\n    width: 1rem;\n    height: 1rem;\n    vertical-align: text-top;\n  }\n\n  .dropdown-menu {\n    font-size: .875rem;\n  }\n\n  .dropdown-item.active {\n    font-weight: 500;\n    color: $gray-900;\n    background-color: transparent;\n    background-image: url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath fill='%23292b2c' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3E%3C/svg%3E\");\n    background-repeat: no-repeat;\n    background-position: .4rem .6rem;\n    background-size: .75rem .75rem;\n  }\n}\n","// Breakpoint viewport sizes and media queries.\n//\n// Breakpoints are defined as a map of (name: minimum width), order from small to large:\n//\n//    (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)\n//\n// The map defined in the `$grid-breakpoints` global variable is used as the `$breakpoints` argument by default.\n\n// Name of the next breakpoint, or null for the last breakpoint.\n//\n//    >> breakpoint-next(sm)\n//    md\n//    >> breakpoint-next(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))\n//    md\n//    >> breakpoint-next(sm, $breakpoint-names: (xs sm md lg xl))\n//    md\n@function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) {\n  $n: index($breakpoint-names, $name);\n  @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);\n}\n\n// Minimum breakpoint width. Null for the smallest (first) breakpoint.\n//\n//    >> breakpoint-min(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))\n//    576px\n@function breakpoint-min($name, $breakpoints: $grid-breakpoints) {\n  $min: map-get($breakpoints, $name);\n  @return if($min != 0, $min, null);\n}\n\n// Maximum breakpoint width. Null for the largest (last) breakpoint.\n// The maximum value is calculated as the minimum of the next one less 0.02px\n// to work around the limitations of `min-` and `max-` prefixes and viewports with fractional widths.\n// See https://www.w3.org/TR/mediaqueries-4/#mq-min-max\n// Uses 0.02px rather than 0.01px to work around a current rounding bug in Safari.\n// See https://bugs.webkit.org/show_bug.cgi?id=178261\n//\n//    >> breakpoint-max(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))\n//    767.98px\n@function breakpoint-max($name, $breakpoints: $grid-breakpoints) {\n  $next: breakpoint-next($name, $breakpoints);\n  @return if($next, breakpoint-min($next, $breakpoints) - .02px, null);\n}\n\n// Returns a blank string if smallest breakpoint, otherwise returns the name with a dash in front.\n// Useful for making responsive utilities.\n//\n//    >> breakpoint-infix(xs, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))\n//    \"\"  (Returns a blank string)\n//    >> breakpoint-infix(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))\n//    \"-sm\"\n@function breakpoint-infix($name, $breakpoints: $grid-breakpoints) {\n  @return if(breakpoint-min($name, $breakpoints) == null, \"\", \"-#{$name}\");\n}\n\n// Media of at least the minimum breakpoint width. No query for the smallest breakpoint.\n// Makes the @content apply to the given breakpoint and wider.\n@mixin media-breakpoint-up($name, $breakpoints: $grid-breakpoints) {\n  $min: breakpoint-min($name, $breakpoints);\n  @if $min {\n    @media (min-width: $min) {\n      @content;\n    }\n  } @else {\n    @content;\n  }\n}\n\n// Media of at most the maximum breakpoint width. No query for the largest breakpoint.\n// Makes the @content apply to the given breakpoint and narrower.\n@mixin media-breakpoint-down($name, $breakpoints: $grid-breakpoints) {\n  $max: breakpoint-max($name, $breakpoints);\n  @if $max {\n    @media (max-width: $max) {\n      @content;\n    }\n  } @else {\n    @content;\n  }\n}\n\n// Media that spans multiple breakpoint widths.\n// Makes the @content apply between the min and max breakpoints\n@mixin media-breakpoint-between($lower, $upper, $breakpoints: $grid-breakpoints) {\n  $min: breakpoint-min($lower, $breakpoints);\n  $max: breakpoint-max($upper, $breakpoints);\n\n  @if $min != null and $max != null {\n    @media (min-width: $min) and (max-width: $max) {\n      @content;\n    }\n  } @else if $max == null {\n    @include media-breakpoint-up($lower, $breakpoints) {\n      @content;\n    }\n  } @else if $min == null {\n    @include media-breakpoint-down($upper, $breakpoints) {\n      @content;\n    }\n  }\n}\n\n// Media between the breakpoint's minimum and maximum widths.\n// No minimum for the smallest breakpoint, and no maximum for the largest one.\n// Makes the @content apply only to the given breakpoint, not viewports any wider or narrower.\n@mixin media-breakpoint-only($name, $breakpoints: $grid-breakpoints) {\n  $min: breakpoint-min($name, $breakpoints);\n  $max: breakpoint-max($name, $breakpoints);\n\n  @if $min != null and $max != null {\n    @media (min-width: $min) and (max-width: $max) {\n      @content;\n    }\n  } @else if $max == null {\n    @include media-breakpoint-up($name, $breakpoints) {\n      @content;\n    }\n  } @else if $min == null {\n    @include media-breakpoint-down($name, $breakpoints) {\n      @content;\n    }\n  }\n}\n","// stylelint-disable declaration-no-important\n\n.bd-masthead {\n  position: relative;\n  padding: 3rem ($grid-gutter-width / 2);\n  // background-image: linear-gradient(45deg, #fafafa, #f5f5f5);\n\n  h1 {\n    line-height: 1;\n  }\n\n  .btn {\n    width: 100%;\n    padding: .8rem 2rem;\n    font-size: 1.25rem;\n    font-weight: 500;\n  }\n\n  .carbonad {\n    margin-top: 0 !important;\n    margin-bottom: -3rem !important;\n  }\n\n  @include media-breakpoint-up(sm) {\n    padding-top: 5rem;\n    padding-bottom: 5rem;\n\n    .carbonad {\n      margin-bottom: 0 !important;\n    }\n  }\n\n  @include media-breakpoint-up(md) {\n    h1 {\n      font-size: 4rem;\n    }\n\n    .carbonad {\n      margin-top: 3rem !important;\n    }\n  }\n}\n\n.half-rule {\n  width: 6rem;\n  margin: 2.5rem 0;\n}\n\n.masthead-followup {\n  .bd-clipboard { display: none; }\n\n  .highlight {\n    padding: .5rem 0;\n    background-color: transparent;\n  }\n}\n","// stylelint-disable declaration-no-important, selector-max-id\n\n//\n// Carbon ads\n//\n\n#carbonads {\n  position: static;\n  display: block;\n  max-width: 400px;\n  padding: 15px 15px 15px 160px;\n  margin: 2rem 0;\n  overflow: hidden;\n  font-size: 13px;\n  line-height: 1.4;\n  text-align: left;\n  background-color: rgba(0, 0, 0, .05);\n\n  a {\n    color: #333;\n    text-decoration: none;\n  }\n\n  @include media-breakpoint-up(sm) {\n    max-width: 330px;\n    border-radius: 4px;\n  }\n}\n\n.carbon-img {\n  float: left;\n  margin-left: -145px;\n}\n\n.carbon-poweredby {\n  display: block;\n  color: #777 !important;\n}\n","// stylelint-disable no-duplicate-selectors, selector-max-combinators, selector-max-compound-selectors, selector-max-type, selector-no-qualifying-type\n\n//\n// Automatically style Markdown-based tables like a Bootstrap `.table`.\n//\n\n.bd-content {\n  order: 1;\n\n  // Hack the sticky header\n  > h2[id],\n  > h3[id],\n  > h4[id] {\n    pointer-events: none;\n\n    > div,\n    > a {\n      pointer-events: auto;\n    }\n\n    &::before {\n      display: block;\n      height: 6rem;\n      margin-top: -6rem;\n      visibility: hidden;\n      content: \"\";\n    }\n  }\n\n  > table {\n    width: 100%;\n    max-width: 100%;\n    margin-bottom: 1rem;\n\n    @include media-breakpoint-down(md) {\n      display: block;\n      overflow-x: auto;\n      -ms-overflow-style: -ms-autohiding-scrollbar; // See https://github.com/twbs/bootstrap/pull/10057\n\n      &.table-bordered {\n        border: 0;\n      }\n    }\n\n    // Cells\n    > thead,\n    > tbody,\n    > tfoot {\n      > tr {\n        > th,\n        > td {\n          padding: $table-cell-padding;\n          vertical-align: top;\n          border: 1px solid $table-border-color;\n\n          > p:last-child {\n            margin-bottom: 0;\n          }\n        }\n      }\n    }\n\n    // Prevent breaking of code (e.g., Grunt tasks list)\n    td:first-child > code {\n      white-space: nowrap;\n    }\n  }\n}\n\n//\n// Docs sections\n//\n\n.bd-content {\n  > h2:not(:first-child) {\n    margin-top: 3rem;\n  }\n\n  > h3 {\n    margin-top: 1.5rem;\n  }\n\n  > ul li,\n  > ol li {\n    margin-bottom: .25rem;\n  }\n\n  @include media-breakpoint-up(lg) {\n    > ul,\n    > ol,\n    > p {\n      max-width: 80%;\n    }\n  }\n}\n\n.bd-title {\n  margin-top: 1rem;\n  margin-bottom: .5rem;\n  font-weight: 300;\n\n  @include media-breakpoint-up(sm) {\n    font-size: 3rem;\n  }\n}\n\n.bd-lead {\n  font-size: 1.125rem;\n  font-weight: 300;\n\n  @include media-breakpoint-up(sm) {\n    max-width: 80%;\n    margin-bottom: 1rem;\n    font-size: 1.5rem;\n  }\n}\n\n.bd-text-purple { color: $bd-purple; }\n.bd-text-purple-bright { color: $bd-purple-bright; }\n","/*!\n * Bootstrap Docs (https://getbootstrap.com/)\n * Copyright 2011-2018 The Bootstrap Authors\n * Copyright 2011-2018 Twitter, Inc.\n * Licensed under the Creative Commons Attribution 3.0 Unported License. For\n * details, see https://creativecommons.org/licenses/by/3.0/.\n */\n.bd-navbar {\n  min-height: 4rem;\n  background-color: #563d7c;\n  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.05), inset 0 -1px 0 rgba(0, 0, 0, 0.1);\n}\n\n@media (max-width: 991.98px) {\n  .bd-navbar {\n    padding-right: .5rem;\n    padding-left: .5rem;\n  }\n  .bd-navbar .navbar-nav-scroll {\n    max-width: 100%;\n    height: 2.5rem;\n    margin-top: .25rem;\n    overflow: hidden;\n    font-size: .875rem;\n  }\n  .bd-navbar .navbar-nav-scroll .navbar-nav {\n    padding-bottom: 2rem;\n    overflow-x: auto;\n    white-space: nowrap;\n    -webkit-overflow-scrolling: touch;\n  }\n}\n\n@media (min-width: 768px) {\n  @supports ((position: -webkit-sticky) or (position: sticky)) {\n    .bd-navbar {\n      position: -webkit-sticky;\n      position: sticky;\n      top: 0;\n      z-index: 1071;\n    }\n  }\n}\n\n.bd-navbar .navbar-nav .nav-link {\n  padding-right: .5rem;\n  padding-left: .5rem;\n  color: #cbbde2;\n}\n\n.bd-navbar .navbar-nav .nav-link.active, .bd-navbar .navbar-nav .nav-link:hover {\n  color: #fff;\n  background-color: transparent;\n}\n\n.bd-navbar .navbar-nav .nav-link.active {\n  font-weight: 500;\n}\n\n.bd-navbar .navbar-nav-svg {\n  display: inline-block;\n  width: 1rem;\n  height: 1rem;\n  vertical-align: text-top;\n}\n\n.bd-navbar .dropdown-menu {\n  font-size: .875rem;\n}\n\n.bd-navbar .dropdown-item.active {\n  font-weight: 500;\n  color: #212529;\n  background-color: transparent;\n  background-image: url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath fill='%23292b2c' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3E%3C/svg%3E\");\n  background-repeat: no-repeat;\n  background-position: .4rem .6rem;\n  background-size: .75rem .75rem;\n}\n\n.bd-masthead {\n  position: relative;\n  padding: 3rem 15px;\n}\n\n.bd-masthead h1 {\n  line-height: 1;\n}\n\n.bd-masthead .btn {\n  width: 100%;\n  padding: .8rem 2rem;\n  font-size: 1.25rem;\n  font-weight: 500;\n}\n\n.bd-masthead .carbonad {\n  margin-top: 0 !important;\n  margin-bottom: -3rem !important;\n}\n\n@media (min-width: 576px) {\n  .bd-masthead {\n    padding-top: 5rem;\n    padding-bottom: 5rem;\n  }\n  .bd-masthead .carbonad {\n    margin-bottom: 0 !important;\n  }\n}\n\n@media (min-width: 768px) {\n  .bd-masthead h1 {\n    font-size: 4rem;\n  }\n  .bd-masthead .carbonad {\n    margin-top: 3rem !important;\n  }\n}\n\n.half-rule {\n  width: 6rem;\n  margin: 2.5rem 0;\n}\n\n.masthead-followup .bd-clipboard {\n  display: none;\n}\n\n.masthead-followup .highlight {\n  padding: .5rem 0;\n  background-color: transparent;\n}\n\n#carbonads {\n  position: static;\n  display: block;\n  max-width: 400px;\n  padding: 15px 15px 15px 160px;\n  margin: 2rem 0;\n  overflow: hidden;\n  font-size: 13px;\n  line-height: 1.4;\n  text-align: left;\n  background-color: rgba(0, 0, 0, 0.05);\n}\n\n#carbonads a {\n  color: #333;\n  text-decoration: none;\n}\n\n@media (min-width: 576px) {\n  #carbonads {\n    max-width: 330px;\n    border-radius: 4px;\n  }\n}\n\n.carbon-img {\n  float: left;\n  margin-left: -145px;\n}\n\n.carbon-poweredby {\n  display: block;\n  color: #777 !important;\n}\n\n.bd-content {\n  -ms-flex-order: 1;\n  order: 1;\n}\n\n.bd-content > h2[id],\n.bd-content > h3[id],\n.bd-content > h4[id] {\n  pointer-events: none;\n}\n\n.bd-content > h2[id] > div,\n.bd-content > h2[id] > a,\n.bd-content > h3[id] > div,\n.bd-content > h3[id] > a,\n.bd-content > h4[id] > div,\n.bd-content > h4[id] > a {\n  pointer-events: auto;\n}\n\n.bd-content > h2[id]::before,\n.bd-content > h3[id]::before,\n.bd-content > h4[id]::before {\n  display: block;\n  height: 6rem;\n  margin-top: -6rem;\n  visibility: hidden;\n  content: \"\";\n}\n\n.bd-content > table {\n  width: 100%;\n  max-width: 100%;\n  margin-bottom: 1rem;\n}\n\n@media (max-width: 991.98px) {\n  .bd-content > table {\n    display: block;\n    overflow-x: auto;\n    -ms-overflow-style: -ms-autohiding-scrollbar;\n  }\n  .bd-content > table.table-bordered {\n    border: 0;\n  }\n}\n\n.bd-content > table > thead > tr > th,\n.bd-content > table > thead > tr > td,\n.bd-content > table > tbody > tr > th,\n.bd-content > table > tbody > tr > td,\n.bd-content > table > tfoot > tr > th,\n.bd-content > table > tfoot > tr > td {\n  padding: 0.75rem;\n  vertical-align: top;\n  border: 1px solid #dee2e6;\n}\n\n.bd-content > table > thead > tr > th > p:last-child,\n.bd-content > table > thead > tr > td > p:last-child,\n.bd-content > table > tbody > tr > th > p:last-child,\n.bd-content > table > tbody > tr > td > p:last-child,\n.bd-content > table > tfoot > tr > th > p:last-child,\n.bd-content > table > tfoot > tr > td > p:last-child {\n  margin-bottom: 0;\n}\n\n.bd-content > table td:first-child > code {\n  white-space: nowrap;\n}\n\n.bd-content > h2:not(:first-child) {\n  margin-top: 3rem;\n}\n\n.bd-content > h3 {\n  margin-top: 1.5rem;\n}\n\n.bd-content > ul li,\n.bd-content > ol li {\n  margin-bottom: .25rem;\n}\n\n@media (min-width: 992px) {\n  .bd-content > ul,\n  .bd-content > ol,\n  .bd-content > p {\n    max-width: 80%;\n  }\n}\n\n.bd-title {\n  margin-top: 1rem;\n  margin-bottom: .5rem;\n  font-weight: 300;\n}\n\n@media (min-width: 576px) {\n  .bd-title {\n    font-size: 3rem;\n  }\n}\n\n.bd-lead {\n  font-size: 1.125rem;\n  font-weight: 300;\n}\n\n@media (min-width: 576px) {\n  .bd-lead {\n    max-width: 80%;\n    margin-bottom: 1rem;\n    font-size: 1.5rem;\n  }\n}\n\n.bd-text-purple {\n  color: #563d7c;\n}\n\n.bd-text-purple-bright {\n  color: #7952b3;\n}\n\n#skippy {\n  display: block;\n  padding: 1em;\n  color: #fff;\n  background-color: #563d7c;\n  outline: 0;\n}\n\n#skippy .skiplink-text {\n  padding: .5em;\n  outline: 1px dotted;\n}\n\n.bd-toc {\n  -ms-flex-order: 2;\n  order: 2;\n  padding-top: 1.5rem;\n  padding-bottom: 1.5rem;\n  font-size: .875rem;\n}\n\n@supports ((position: -webkit-sticky) or (position: sticky)) {\n  .bd-toc {\n    position: -webkit-sticky;\n    position: sticky;\n    top: 4rem;\n    height: calc(100vh - 4rem);\n    overflow-y: auto;\n  }\n}\n\n.section-nav {\n  padding-left: 0;\n  border-left: 1px solid #eee;\n}\n\n.section-nav ul {\n  padding-left: 1rem;\n}\n\n.section-nav ul ul {\n  display: none;\n}\n\n.toc-entry {\n  display: block;\n}\n\n.toc-entry a {\n  display: block;\n  padding: .125rem 1.5rem;\n  color: #99979c;\n}\n\n.toc-entry a:hover {\n  color: #007bff;\n  text-decoration: none;\n}\n\n.bd-sidebar {\n  -ms-flex-order: 0;\n  order: 0;\n  border-bottom: 1px solid rgba(0, 0, 0, 0.1);\n}\n\n@media (min-width: 768px) {\n  .bd-sidebar {\n    border-right: 1px solid rgba(0, 0, 0, 0.1);\n  }\n  @supports ((position: -webkit-sticky) or (position: sticky)) {\n    .bd-sidebar {\n      position: -webkit-sticky;\n      position: sticky;\n      top: 4rem;\n      z-index: 1000;\n      height: calc(100vh - 4rem);\n    }\n  }\n}\n\n@media (min-width: 1200px) {\n  .bd-sidebar {\n    -ms-flex: 0 1 320px;\n    flex: 0 1 320px;\n  }\n}\n\n.bd-links {\n  padding-top: 1rem;\n  padding-bottom: 1rem;\n  margin-right: -15px;\n  margin-left: -15px;\n}\n\n@media (min-width: 768px) {\n  @supports ((position: -webkit-sticky) or (position: sticky)) {\n    .bd-links {\n      max-height: calc(100vh - 9rem);\n      overflow-y: auto;\n    }\n  }\n}\n\n@media (min-width: 768px) {\n  .bd-links {\n    display: block !important;\n  }\n}\n\n.bd-search {\n  position: relative;\n  padding: 1rem 15px;\n  margin-right: -15px;\n  margin-left: -15px;\n  border-bottom: 1px solid rgba(0, 0, 0, 0.05);\n}\n\n.bd-search .form-control:focus {\n  border-color: #7952b3;\n  box-shadow: 0 0 0 3px rgba(121, 82, 179, 0.25);\n}\n\n.bd-search-docs-toggle {\n  line-height: 1;\n  color: #212529;\n}\n\n.bd-sidenav {\n  display: none;\n}\n\n.bd-toc-link {\n  display: block;\n  padding: .25rem 1.5rem;\n  font-weight: 500;\n  color: rgba(0, 0, 0, 0.65);\n}\n\n.bd-toc-link:hover {\n  color: rgba(0, 0, 0, 0.85);\n  text-decoration: none;\n}\n\n.bd-toc-item.active {\n  margin-bottom: 1rem;\n}\n\n.bd-toc-item.active:not(:first-child) {\n  margin-top: 1rem;\n}\n\n.bd-toc-item.active > .bd-toc-link {\n  color: rgba(0, 0, 0, 0.85);\n}\n\n.bd-toc-item.active > .bd-toc-link:hover {\n  background-color: transparent;\n}\n\n.bd-toc-item.active > .bd-sidenav {\n  display: block;\n}\n\n.bd-sidebar .nav > li > a {\n  display: block;\n  padding: .25rem 1.5rem;\n  font-size: 90%;\n  color: rgba(0, 0, 0, 0.65);\n}\n\n.bd-sidebar .nav > li > a:hover {\n  color: rgba(0, 0, 0, 0.85);\n  text-decoration: none;\n  background-color: transparent;\n}\n\n.bd-sidebar .nav > .active > a,\n.bd-sidebar .nav > .active:hover > a {\n  font-weight: 500;\n  color: rgba(0, 0, 0, 0.85);\n  background-color: transparent;\n}\n\n.bd-footer {\n  font-size: 85%;\n  text-align: center;\n  background-color: #f7f7f7;\n}\n\n.bd-footer a {\n  font-weight: 500;\n  color: #495057;\n}\n\n.bd-footer a:hover, .bd-footer a:focus {\n  color: #007bff;\n}\n\n.bd-footer p {\n  margin-bottom: 0;\n}\n\n@media (min-width: 576px) {\n  .bd-footer {\n    text-align: left;\n  }\n}\n\n.bd-footer-links {\n  padding-left: 0;\n  margin-bottom: 1rem;\n}\n\n.bd-footer-links li {\n  display: inline-block;\n}\n\n.bd-footer-links li + li {\n  margin-left: 1rem;\n}\n\n.bd-example-row .row > .col,\n.bd-example-row .row > [class^=\"col-\"] {\n  padding-top: .75rem;\n  padding-bottom: .75rem;\n  background-color: rgba(86, 61, 124, 0.15);\n  border: 1px solid rgba(86, 61, 124, 0.2);\n}\n\n.bd-example-row .row + .row {\n  margin-top: 1rem;\n}\n\n.bd-example-row .flex-items-top,\n.bd-example-row .flex-items-middle,\n.bd-example-row .flex-items-bottom {\n  min-height: 6rem;\n  background-color: rgba(255, 0, 0, 0.1);\n}\n\n.bd-example-row-flex-cols .row {\n  min-height: 10rem;\n  background-color: rgba(255, 0, 0, 0.1);\n}\n\n.bd-highlight {\n  background-color: rgba(86, 61, 124, 0.15);\n  border: 1px solid rgba(86, 61, 124, 0.15);\n}\n\n.example-container {\n  width: 800px;\n  width: 100%;\n  padding-right: 15px;\n  padding-left: 15px;\n  margin-right: auto;\n  margin-left: auto;\n}\n\n.example-row {\n  display: -ms-flexbox;\n  display: flex;\n  -ms-flex-wrap: wrap;\n  flex-wrap: wrap;\n  margin-right: -15px;\n  margin-left: -15px;\n}\n\n.example-content-main {\n  position: relative;\n  width: 100%;\n  min-height: 1px;\n  padding-right: 15px;\n  padding-left: 15px;\n}\n\n@media (min-width: 576px) {\n  .example-content-main {\n    -ms-flex: 0 0 50%;\n    flex: 0 0 50%;\n    max-width: 50%;\n  }\n}\n\n@media (min-width: 992px) {\n  .example-content-main {\n    -ms-flex: 0 0 66.666667%;\n    flex: 0 0 66.666667%;\n    max-width: 66.666667%;\n  }\n}\n\n.example-content-secondary {\n  position: relative;\n  width: 100%;\n  min-height: 1px;\n  padding-right: 15px;\n  padding-left: 15px;\n}\n\n@media (min-width: 576px) {\n  .example-content-secondary {\n    -ms-flex: 0 0 50%;\n    flex: 0 0 50%;\n    max-width: 50%;\n  }\n}\n\n@media (min-width: 992px) {\n  .example-content-secondary {\n    -ms-flex: 0 0 33.333333%;\n    flex: 0 0 33.333333%;\n    max-width: 33.333333%;\n  }\n}\n\n.bd-example-container {\n  min-width: 16rem;\n  max-width: 25rem;\n  margin-right: auto;\n  margin-left: auto;\n}\n\n.bd-example-container-header {\n  height: 3rem;\n  margin-bottom: .5rem;\n  background-color: white;\n  border-radius: .25rem;\n}\n\n.bd-example-container-sidebar {\n  float: right;\n  width: 4rem;\n  height: 8rem;\n  background-color: #80bdff;\n  border-radius: .25rem;\n}\n\n.bd-example-container-body {\n  height: 8rem;\n  margin-right: 4.5rem;\n  background-color: #957bbe;\n  border-radius: .25rem;\n}\n\n.bd-example-container-fluid {\n  max-width: none;\n}\n\n.bd-example {\n  position: relative;\n  padding: 1rem;\n  margin: 1rem -15px 0;\n  border: solid #f8f9fa;\n  border-width: .2rem 0 0;\n}\n\n.bd-example::after {\n  display: block;\n  clear: both;\n  content: \"\";\n}\n\n@media (min-width: 576px) {\n  .bd-example {\n    padding: 1.5rem;\n    margin-right: 0;\n    margin-left: 0;\n    border-width: .2rem;\n  }\n}\n\n.bd-example + .highlight,\n.bd-example + .clipboard + .highlight {\n  margin-top: 0;\n}\n\n.bd-example + p {\n  margin-top: 2rem;\n}\n\n.bd-example .pos-f-t {\n  position: relative;\n  margin: -1rem;\n}\n\n@media (min-width: 576px) {\n  .bd-example .pos-f-t {\n    margin: -1.5rem;\n  }\n}\n\n.bd-example .custom-file-input:lang(es) ~ .custom-file-label::after {\n  content: \"Elegir\";\n}\n\n.bd-example > .form-control + .form-control {\n  margin-top: .5rem;\n}\n\n.bd-example > .nav + .nav,\n.bd-example > .alert + .alert,\n.bd-example > .navbar + .navbar,\n.bd-example > .progress + .progress,\n.bd-example > .progress + .btn {\n  margin-top: 1rem;\n}\n\n.bd-example > .dropdown-menu:first-child {\n  position: static;\n  display: block;\n}\n\n.bd-example > .form-group:last-child {\n  margin-bottom: 0;\n}\n\n.bd-example > .close {\n  float: none;\n}\n\n.bd-example-type .table .type-info {\n  color: #999;\n  vertical-align: middle;\n}\n\n.bd-example-type .table td {\n  padding: 1rem 0;\n  border-color: #eee;\n}\n\n.bd-example-type .table tr:first-child td {\n  border-top: 0;\n}\n\n.bd-example-type h1,\n.bd-example-type h2,\n.bd-example-type h3,\n.bd-example-type h4,\n.bd-example-type h5,\n.bd-example-type h6 {\n  margin-top: 0;\n  margin-bottom: 0;\n}\n\n.bd-example-bg-classes p {\n  padding: 1rem;\n}\n\n.bd-example > img + img {\n  margin-left: .5rem;\n}\n\n.bd-example > .btn-group {\n  margin-top: .25rem;\n  margin-bottom: .25rem;\n}\n\n.bd-example > .btn-toolbar + .btn-toolbar {\n  margin-top: .5rem;\n}\n\n.bd-example-control-sizing select,\n.bd-example-control-sizing input[type=\"text\"] + input[type=\"text\"] {\n  margin-top: .5rem;\n}\n\n.bd-example-form .input-group {\n  margin-bottom: .5rem;\n}\n\n.bd-example > textarea.form-control {\n  resize: vertical;\n}\n\n.bd-example > .list-group {\n  max-width: 400px;\n}\n\n.bd-example .fixed-top,\n.bd-example .sticky-top {\n  position: static;\n  margin: -1rem -1rem 1rem;\n}\n\n.bd-example .fixed-bottom {\n  position: static;\n  margin: 1rem -1rem -1rem;\n}\n\n@media (min-width: 576px) {\n  .bd-example .fixed-top,\n  .bd-example .sticky-top {\n    margin: -1.5rem -1.5rem 1rem;\n  }\n  .bd-example .fixed-bottom {\n    margin: 1rem -1.5rem -1.5rem;\n  }\n}\n\n.bd-example .pagination {\n  margin-top: .5rem;\n  margin-bottom: .5rem;\n}\n\n.modal {\n  z-index: 1072;\n}\n\n.modal .tooltip,\n.modal .popover {\n  z-index: 1073;\n}\n\n.modal-backdrop {\n  z-index: 1071;\n}\n\n.bd-example-modal {\n  background-color: #fafafa;\n}\n\n.bd-example-modal .modal {\n  position: relative;\n  top: auto;\n  right: auto;\n  bottom: auto;\n  left: auto;\n  z-index: 1;\n  display: block;\n}\n\n.bd-example-modal .modal-dialog {\n  left: auto;\n  margin-right: auto;\n  margin-left: auto;\n}\n\n.bd-example-tabs .nav-tabs {\n  margin-bottom: 1rem;\n}\n\n.bd-example-popover-static {\n  padding-bottom: 1.5rem;\n  background-color: #f9f9f9;\n}\n\n.bd-example-popover-static .popover {\n  position: relative;\n  display: block;\n  float: left;\n  width: 260px;\n  margin: 1.25rem;\n}\n\n.tooltip-demo a {\n  white-space: nowrap;\n}\n\n.bd-example-tooltip-static .tooltip {\n  position: relative;\n  display: inline-block;\n  margin: 10px 20px;\n  opacity: 1;\n}\n\n.scrollspy-example {\n  position: relative;\n  height: 200px;\n  margin-top: .5rem;\n  overflow: auto;\n}\n\n.scrollspy-example-2 {\n  position: relative;\n  height: 350px;\n  overflow: auto;\n}\n\n.bd-example-border-utils [class^=\"border\"] {\n  display: inline-block;\n  width: 5rem;\n  height: 5rem;\n  margin: .25rem;\n  background-color: #f5f5f5;\n}\n\n.bd-example-border-utils-0 [class^=\"border\"] {\n  border: 1px solid #dee2e6;\n}\n\n.highlight {\n  padding: 1rem;\n  margin-top: 1rem;\n  margin-bottom: 1rem;\n  background-color: #f8f9fa;\n  -ms-overflow-style: -ms-autohiding-scrollbar;\n}\n\n@media (min-width: 576px) {\n  .highlight {\n    padding: 1.5rem;\n  }\n}\n\n.bd-content .highlight {\n  margin-right: -15px;\n  margin-left: -15px;\n}\n\n@media (min-width: 576px) {\n  .bd-content .highlight {\n    margin-right: 0;\n    margin-left: 0;\n  }\n}\n\n.highlight pre {\n  padding: 0;\n  margin-top: 0;\n  margin-bottom: 0;\n  background-color: transparent;\n  border: 0;\n}\n\n.highlight pre code {\n  font-size: inherit;\n  color: #212529;\n}\n\n.btn-bd-primary {\n  font-weight: 500;\n  color: #7952b3;\n  border-color: #7952b3;\n}\n\n.btn-bd-primary:hover, .btn-bd-primary:active {\n  color: #fff;\n  background-color: #7952b3;\n  border-color: #7952b3;\n}\n\n.btn-bd-primary:focus {\n  box-shadow: 0 0 0 3px rgba(121, 82, 179, 0.25);\n}\n\n.btn-bd-download {\n  font-weight: 500;\n  color: #ffe484;\n  border-color: #ffe484;\n}\n\n.btn-bd-download:hover, .btn-bd-download:active {\n  color: #2a2730;\n  background-color: #ffe484;\n  border-color: #ffe484;\n}\n\n.btn-bd-download:focus {\n  box-shadow: 0 0 0 3px rgba(255, 228, 132, 0.25);\n}\n\n.bd-callout {\n  padding: 1.25rem;\n  margin-top: 1.25rem;\n  margin-bottom: 1.25rem;\n  border: 1px solid #eee;\n  border-left-width: .25rem;\n  border-radius: .25rem;\n}\n\n.bd-callout h4 {\n  margin-top: 0;\n  margin-bottom: .25rem;\n}\n\n.bd-callout p:last-child {\n  margin-bottom: 0;\n}\n\n.bd-callout code {\n  border-radius: .25rem;\n}\n\n.bd-callout + .bd-callout {\n  margin-top: -.25rem;\n}\n\n.bd-callout-info {\n  border-left-color: #5bc0de;\n}\n\n.bd-callout-info h4 {\n  color: #5bc0de;\n}\n\n.bd-callout-warning {\n  border-left-color: #f0ad4e;\n}\n\n.bd-callout-warning h4 {\n  color: #f0ad4e;\n}\n\n.bd-callout-danger {\n  border-left-color: #d9534f;\n}\n\n.bd-callout-danger h4 {\n  color: #d9534f;\n}\n\n.bd-examples .img-thumbnail {\n  margin-bottom: .75rem;\n}\n\n.bd-examples h4 {\n  margin-bottom: .25rem;\n}\n\n.bd-examples p {\n  margin-bottom: 1.25rem;\n}\n\n@media (max-width: 480px) {\n  .bd-examples {\n    margin-right: -.75rem;\n    margin-left: -.75rem;\n  }\n  .bd-examples > [class^=\"col-\"] {\n    padding-right: .75rem;\n    padding-left: .75rem;\n  }\n}\n\n.bd-browser-bugs td p {\n  margin-bottom: 0;\n}\n\n.bd-browser-bugs th:first-child {\n  width: 18%;\n}\n\n.bd-brand-logos {\n  display: table;\n  width: 100%;\n  margin-bottom: 1rem;\n  overflow: hidden;\n  color: #563d7c;\n  background-color: #f9f9f9;\n  border-radius: .25rem;\n}\n\n.bd-brand-item {\n  padding: 4rem 0;\n  text-align: center;\n}\n\n.bd-brand-item + .bd-brand-item {\n  border-top: 1px solid #fff;\n}\n\n.bd-brand-logos .inverse {\n  color: #fff;\n  background-color: #563d7c;\n}\n\n.bd-brand-item h1,\n.bd-brand-item h3 {\n  margin-top: 0;\n  margin-bottom: 0;\n}\n\n.bd-brand-item .bd-booticon {\n  margin-right: auto;\n  margin-left: auto;\n}\n\n@media (min-width: 768px) {\n  .bd-brand-item {\n    display: table-cell;\n    width: 1%;\n  }\n  .bd-brand-item + .bd-brand-item {\n    border-top: 0;\n    border-left: 1px solid #fff;\n  }\n  .bd-brand-item h1 {\n    font-size: 4rem;\n  }\n}\n\n.color-swatches {\n  margin: 0 -5px;\n  overflow: hidden;\n}\n\n.color-swatch {\n  float: left;\n  width: 4rem;\n  height: 4rem;\n  margin-right: .25rem;\n  margin-left: .25rem;\n  border-radius: .25rem;\n}\n\n@media (min-width: 768px) {\n  .color-swatch {\n    width: 6rem;\n    height: 6rem;\n  }\n}\n\n.color-swatches .bd-purple {\n  background-color: #563d7c;\n}\n\n.color-swatches .bd-purple-light {\n  background-color: #cbbde2;\n}\n\n.color-swatches .bd-purple-lighter {\n  background-color: #e5e1ea;\n}\n\n.color-swatches .bd-gray {\n  background-color: #f9f9f9;\n}\n\n.swatch-blue {\n  color: #fff;\n  background-color: #007bff;\n}\n\n.swatch-indigo {\n  color: #fff;\n  background-color: #6610f2;\n}\n\n.swatch-purple {\n  color: #fff;\n  background-color: #6f42c1;\n}\n\n.swatch-pink {\n  color: #fff;\n  background-color: #e83e8c;\n}\n\n.swatch-red {\n  color: #fff;\n  background-color: #dc3545;\n}\n\n.swatch-orange {\n  color: #212529;\n  background-color: #fd7e14;\n}\n\n.swatch-yellow {\n  color: #212529;\n  background-color: #ffc107;\n}\n\n.swatch-green {\n  color: #fff;\n  background-color: #28a745;\n}\n\n.swatch-teal {\n  color: #fff;\n  background-color: #20c997;\n}\n\n.swatch-cyan {\n  color: #fff;\n  background-color: #17a2b8;\n}\n\n.swatch-white {\n  color: #212529;\n  background-color: #fff;\n}\n\n.swatch-gray {\n  color: #fff;\n  background-color: #6c757d;\n}\n\n.swatch-gray-dark {\n  color: #fff;\n  background-color: #343a40;\n}\n\n.swatch-primary {\n  color: #fff;\n  background-color: #007bff;\n}\n\n.swatch-secondary {\n  color: #fff;\n  background-color: #6c757d;\n}\n\n.swatch-success {\n  color: #fff;\n  background-color: #28a745;\n}\n\n.swatch-info {\n  color: #fff;\n  background-color: #17a2b8;\n}\n\n.swatch-warning {\n  color: #212529;\n  background-color: #ffc107;\n}\n\n.swatch-danger {\n  color: #fff;\n  background-color: #dc3545;\n}\n\n.swatch-light {\n  color: #212529;\n  background-color: #f8f9fa;\n}\n\n.swatch-dark {\n  color: #fff;\n  background-color: #343a40;\n}\n\n.swatch-100 {\n  color: #212529;\n  background-color: #f8f9fa;\n}\n\n.swatch-200 {\n  color: #212529;\n  background-color: #e9ecef;\n}\n\n.swatch-300 {\n  color: #212529;\n  background-color: #dee2e6;\n}\n\n.swatch-400 {\n  color: #212529;\n  background-color: #ced4da;\n}\n\n.swatch-500 {\n  color: #212529;\n  background-color: #adb5bd;\n}\n\n.swatch-600 {\n  color: #fff;\n  background-color: #6c757d;\n}\n\n.swatch-700 {\n  color: #fff;\n  background-color: #495057;\n}\n\n.swatch-800 {\n  color: #fff;\n  background-color: #343a40;\n}\n\n.swatch-900 {\n  color: #fff;\n  background-color: #212529;\n}\n\n.bd-clipboard {\n  position: relative;\n  display: none;\n  float: right;\n}\n\n.bd-clipboard + .highlight {\n  margin-top: 0;\n}\n\n.btn-clipboard {\n  position: absolute;\n  top: .5rem;\n  right: .5rem;\n  z-index: 10;\n  display: block;\n  padding: .25rem .5rem;\n  font-size: 75%;\n  color: #818a91;\n  cursor: pointer;\n  background-color: transparent;\n  border: 0;\n  border-radius: .25rem;\n}\n\n.btn-clipboard:hover {\n  color: #fff;\n  background-color: #027de7;\n}\n\n@media (min-width: 768px) {\n  .bd-clipboard {\n    display: block;\n  }\n}\n\n.hll {\n  background-color: #ffc;\n}\n\n.c {\n  color: #999;\n}\n\n.k {\n  color: #069;\n}\n\n.o {\n  color: #555;\n}\n\n.cm {\n  color: #999;\n}\n\n.cp {\n  color: #099;\n}\n\n.c1 {\n  color: #999;\n}\n\n.cs {\n  color: #999;\n}\n\n.gd {\n  background-color: #fcc;\n  border: 1px solid #c00;\n}\n\n.ge {\n  font-style: italic;\n}\n\n.gr {\n  color: #f00;\n}\n\n.gh {\n  color: #030;\n}\n\n.gi {\n  background-color: #cfc;\n  border: 1px solid #0c0;\n}\n\n.go {\n  color: #aaa;\n}\n\n.gp {\n  color: #009;\n}\n\n.gu {\n  color: #030;\n}\n\n.gt {\n  color: #9c6;\n}\n\n.kc {\n  color: #069;\n}\n\n.kd {\n  color: #069;\n}\n\n.kn {\n  color: #069;\n}\n\n.kp {\n  color: #069;\n}\n\n.kr {\n  color: #069;\n}\n\n.kt {\n  color: #078;\n}\n\n.m {\n  color: #f60;\n}\n\n.s {\n  color: #d44950;\n}\n\n.na {\n  color: #4f9fcf;\n}\n\n.nb {\n  color: #366;\n}\n\n.nc {\n  color: #0a8;\n}\n\n.no {\n  color: #360;\n}\n\n.nd {\n  color: #99f;\n}\n\n.ni {\n  color: #999;\n}\n\n.ne {\n  color: #c00;\n}\n\n.nf {\n  color: #c0f;\n}\n\n.nl {\n  color: #99f;\n}\n\n.nn {\n  color: #0cf;\n}\n\n.nt {\n  color: #2f6f9f;\n}\n\n.nv {\n  color: #033;\n}\n\n.ow {\n  color: #000;\n}\n\n.w {\n  color: #bbb;\n}\n\n.mf {\n  color: #f60;\n}\n\n.mh {\n  color: #f60;\n}\n\n.mi {\n  color: #f60;\n}\n\n.mo {\n  color: #f60;\n}\n\n.sb {\n  color: #c30;\n}\n\n.sc {\n  color: #c30;\n}\n\n.sd {\n  font-style: italic;\n  color: #c30;\n}\n\n.s2 {\n  color: #c30;\n}\n\n.se {\n  color: #c30;\n}\n\n.sh {\n  color: #c30;\n}\n\n.si {\n  color: #a00;\n}\n\n.sx {\n  color: #c30;\n}\n\n.sr {\n  color: #3aa;\n}\n\n.s1 {\n  color: #c30;\n}\n\n.ss {\n  color: #fc3;\n}\n\n.bp {\n  color: #366;\n}\n\n.vc {\n  color: #033;\n}\n\n.vg {\n  color: #033;\n}\n\n.vi {\n  color: #033;\n}\n\n.il {\n  color: #f60;\n}\n\n.css .o,\n.css .o + .nt,\n.css .nt + .nt {\n  color: #999;\n}\n\n.language-bash::before,\n.language-sh::before {\n  color: #009;\n  content: \"$ \";\n  -webkit-user-select: none;\n  -moz-user-select: none;\n  -ms-user-select: none;\n  user-select: none;\n}\n\n.language-powershell::before {\n  color: #009;\n  content: \"PM> \";\n  -webkit-user-select: none;\n  -moz-user-select: none;\n  -ms-user-select: none;\n  user-select: none;\n}\n\n.anchorjs-link {\n  font-weight: 400;\n  color: rgba(0, 123, 255, 0.5);\n  transition: color .16s linear;\n}\n\n.anchorjs-link:hover {\n  color: #007bff;\n  text-decoration: none;\n}\n\n.algolia-autocomplete {\n  display: block !important;\n  -ms-flex: 1;\n  flex: 1;\n}\n\n.algolia-autocomplete .ds-dropdown-menu {\n  width: 100%;\n  min-width: 0 !important;\n  max-width: none !important;\n  padding: .75rem 0 !important;\n  background-color: #fff;\n  background-clip: padding-box;\n  border: 1px solid rgba(0, 0, 0, 0.1);\n  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.175);\n}\n\n@media (min-width: 768px) {\n  .algolia-autocomplete .ds-dropdown-menu {\n    width: 175%;\n  }\n}\n\n.algolia-autocomplete .ds-dropdown-menu::before {\n  display: none !important;\n}\n\n.algolia-autocomplete .ds-dropdown-menu [class^=\"ds-dataset-\"] {\n  padding: 0 !important;\n  overflow: visible !important;\n  background-color: transparent !important;\n  border: 0 !important;\n}\n\n.algolia-autocomplete .ds-dropdown-menu .ds-suggestions {\n  margin-top: 0 !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion {\n  padding: 0 !important;\n  overflow: visible !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--category-header {\n  padding: .125rem 1rem !important;\n  margin-top: 0 !important;\n  font-size: .875rem !important;\n  font-weight: 500 !important;\n  color: #7952b3 !important;\n  border-bottom: 0 !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--wrapper {\n  float: none !important;\n  padding-top: 0 !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--subcategory-column {\n  float: none !important;\n  width: auto !important;\n  padding: 0 !important;\n  text-align: left !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--content {\n  float: none !important;\n  width: auto !important;\n  padding: 0 !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--content::before {\n  display: none !important;\n}\n\n.algolia-autocomplete .ds-suggestion:not(:first-child) .algolia-docsearch-suggestion--category-header {\n  padding-top: .75rem !important;\n  margin-top: .75rem !important;\n  border-top: 1px solid rgba(0, 0, 0, 0.1);\n}\n\n.algolia-autocomplete .ds-suggestion .algolia-docsearch-suggestion--subcategory-column {\n  display: none !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--title {\n  display: block;\n  padding: .25rem 1rem !important;\n  margin-bottom: 0 !important;\n  font-size: .875rem !important;\n  font-weight: 400 !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--text {\n  padding: 0 1rem .5rem !important;\n  margin-top: -.25rem;\n  font-size: .875rem !important;\n  font-weight: 400;\n  line-height: 1.25 !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-footer {\n  float: none !important;\n  width: auto !important;\n  height: auto !important;\n  padding: .75rem 1rem 0;\n  font-size: .75rem !important;\n  line-height: 1 !important;\n  color: #767676 !important;\n  border-top: 1px solid rgba(0, 0, 0, 0.1);\n}\n\n.algolia-autocomplete .algolia-docsearch-footer--logo {\n  display: inline !important;\n  overflow: visible !important;\n  color: inherit !important;\n  text-indent: 0 !important;\n  background: none !important;\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--highlight {\n  color: #5f2dab;\n  background-color: rgba(154, 132, 187, 0.12);\n}\n\n.algolia-autocomplete .algolia-docsearch-suggestion--text .algolia-docsearch-suggestion--highlight {\n  box-shadow: inset 0 -2px 0 0 rgba(95, 45, 171, 0.5) !important;\n}\n\n.algolia-autocomplete .ds-suggestion.ds-cursor .algolia-docsearch-suggestion--content {\n  background-color: rgba(208, 189, 236, 0.15) !important;\n}\n/*# sourceMappingURL=docs.min.css.map */","// stylelint-disable selector-max-id\n\n#skippy {\n  display: block;\n  padding: 1em;\n  color: #fff;\n  background-color: $bd-purple;\n  outline: 0;\n\n  .skiplink-text {\n    padding: .5em;\n    outline: 1px dotted;\n  }\n}\n","// stylelint-disable declaration-no-important\n\n//\n// Right side table of contents\n//\n\n.bd-toc {\n  @supports (position: sticky) {\n    position: sticky;\n    top: 4rem;\n    height: calc(100vh - 4rem);\n    overflow-y: auto;\n  }\n  order: 2;\n  padding-top: 1.5rem;\n  padding-bottom: 1.5rem;\n  font-size: .875rem;\n}\n\n.section-nav {\n  padding-left: 0;\n  border-left: 1px solid #eee;\n\n  ul {\n    padding-left: 1rem;\n\n    ul {\n      display: none;\n    }\n  }\n}\n\n.toc-entry {\n  display: block;\n\n  a {\n    display: block;\n    padding: .125rem 1.5rem;\n    color: #99979c;\n\n    &:hover {\n      color: $blue;\n      text-decoration: none;\n    }\n  }\n}\n\n//\n// Left side navigation\n//\n\n.bd-sidebar {\n  order: 0;\n  // background-color: #f5f2f9;\n  border-bottom: 1px solid rgba(0, 0, 0, .1);\n\n  @include media-breakpoint-up(md) {\n    @supports (position: sticky) {\n      position: sticky;\n      top: 4rem;\n      z-index: 1000;\n      height: calc(100vh - 4rem);\n    }\n    border-right: 1px solid rgba(0, 0, 0, .1);\n  }\n\n  @include media-breakpoint-up(xl) {\n    flex: 0 1 320px;\n  }\n}\n\n.bd-links {\n  padding-top: 1rem;\n  padding-bottom: 1rem;\n  margin-right: -15px;\n  margin-left: -15px;\n\n  @include media-breakpoint-up(md) {\n    @supports (position: sticky) {\n      max-height: calc(100vh - 9rem);\n      overflow-y: auto;\n    }\n  }\n\n  // Override collapse behaviors\n  @include media-breakpoint-up(md) {\n    display: block !important;\n  }\n}\n\n.bd-search {\n  position: relative; // To contain the Algolia search\n  padding: 1rem 15px;\n  margin-right: -15px;\n  margin-left: -15px;\n  border-bottom: 1px solid rgba(0, 0, 0, .05);\n\n  .form-control:focus {\n    border-color: $bd-purple-bright;\n    box-shadow: 0 0 0 3px rgba($bd-purple-bright, .25);\n  }\n}\n\n.bd-search-docs-toggle {\n  line-height: 1;\n  color: $gray-900;\n}\n\n.bd-sidenav {\n  display: none;\n}\n\n.bd-toc-link {\n  display: block;\n  padding: .25rem 1.5rem;\n  font-weight: 500;\n  color: rgba(0, 0, 0, .65);\n\n  &:hover {\n    color: rgba(0, 0, 0, .85);\n    text-decoration: none;\n  }\n}\n\n.bd-toc-item {\n  &.active {\n    margin-bottom: 1rem;\n\n    &:not(:first-child) {\n      margin-top: 1rem;\n    }\n\n    > .bd-toc-link {\n      color: rgba(0, 0, 0, .85);\n\n      &:hover {\n        background-color: transparent;\n      }\n    }\n\n    > .bd-sidenav {\n      display: block;\n    }\n  }\n}\n\n// All levels of nav\n.bd-sidebar .nav > li > a {\n  display: block;\n  padding: .25rem 1.5rem;\n  font-size: 90%;\n  color: rgba(0, 0, 0, .65);\n}\n\n.bd-sidebar .nav > li > a:hover {\n  color: rgba(0, 0, 0, .85);\n  text-decoration: none;\n  background-color: transparent;\n}\n\n.bd-sidebar .nav > .active > a,\n.bd-sidebar .nav > .active:hover > a {\n  font-weight: 500;\n  color: rgba(0, 0, 0, .85);\n  background-color: transparent;\n}\n","//\n// Footer\n//\n\n.bd-footer {\n  font-size: 85%;\n  text-align: center;\n  background-color: #f7f7f7;\n\n  a {\n    font-weight: 500;\n    color: $gray-700;\n\n    &:hover,\n    &:focus {\n      color: $link-color;\n    }\n  }\n\n  p {\n    margin-bottom: 0;\n  }\n\n  @include media-breakpoint-up(sm) {\n    text-align: left;\n  }\n}\n\n.bd-footer-links {\n  padding-left: 0;\n  margin-bottom: 1rem;\n\n  li {\n    display: inline-block;\n\n    + li {\n      margin-left: 1rem;\n    }\n  }\n}\n","// stylelint-disable no-duplicate-selectors, selector-no-qualifying-type\n\n//\n// Grid examples\n//\n\n.bd-example-row {\n  .row {\n    > .col,\n    > [class^=\"col-\"] {\n      padding-top: .75rem;\n      padding-bottom: .75rem;\n      background-color: rgba(86, 61, 124, .15);\n      border: 1px solid rgba(86, 61, 124, .2);\n    }\n  }\n\n  .row + .row {\n    margin-top: 1rem;\n  }\n\n  .flex-items-top,\n  .flex-items-middle,\n  .flex-items-bottom {\n    min-height: 6rem;\n    background-color: rgba(255, 0, 0, .1);\n  }\n}\n\n.bd-example-row-flex-cols .row {\n  min-height: 10rem;\n  background-color: rgba(255, 0, 0, .1);\n}\n\n.bd-highlight {\n  background-color: rgba($bd-purple, .15);\n  border: 1px solid rgba($bd-purple, .15);\n}\n\n// Grid mixins\n.example-container {\n  width: 800px;\n  @include make-container();\n}\n\n.example-row {\n  @include make-row();\n}\n\n.example-content-main {\n  @include make-col-ready();\n\n  @include media-breakpoint-up(sm) {\n    @include make-col(6);\n  }\n\n  @include media-breakpoint-up(lg) {\n    @include make-col(8);\n  }\n}\n\n.example-content-secondary {\n  @include make-col-ready();\n\n  @include media-breakpoint-up(sm) {\n    @include make-col(6);\n  }\n\n  @include media-breakpoint-up(lg) {\n    @include make-col(4);\n  }\n}\n\n\n//\n// Container illustrations\n//\n\n.bd-example-container {\n  min-width: 16rem;\n  max-width: 25rem;\n  margin-right: auto;\n  margin-left: auto;\n}\n\n.bd-example-container-header {\n  height: 3rem;\n  margin-bottom: .5rem;\n  background-color: lighten($blue, 50%);\n  border-radius: .25rem;\n}\n\n.bd-example-container-sidebar {\n  float: right;\n  width: 4rem;\n  height: 8rem;\n  background-color: lighten($blue, 25%);\n  border-radius: .25rem;\n}\n\n.bd-example-container-body {\n  height: 8rem;\n  margin-right: 4.5rem;\n  background-color: lighten($bd-purple, 25%);\n  border-radius: .25rem;\n}\n\n.bd-example-container-fluid {\n  max-width: none;\n}\n\n\n//\n// Docs examples\n//\n\n.bd-example {\n  position: relative;\n  padding: 1rem;\n  margin: 1rem (-$grid-gutter-width / 2) 0;\n  border: solid $gray-100;\n  border-width: .2rem 0 0;\n  @include clearfix();\n\n  @include media-breakpoint-up(sm) {\n    padding: 1.5rem;\n    margin-right: 0;\n    margin-left: 0;\n    border-width: .2rem;\n  }\n\n  + .highlight,\n  + .clipboard + .highlight {\n    margin-top: 0;\n  }\n\n  + p {\n    margin-top: 2rem;\n  }\n\n  .pos-f-t {\n    position: relative;\n    margin: -1rem;\n\n    @include media-breakpoint-up(sm) {\n      margin: -1.5rem;\n    }\n  }\n\n  .custom-file-input:lang(es) ~ .custom-file-label::after {\n    content: \"Elegir\";\n  }\n\n  > .form-control {\n    + .form-control {\n      margin-top: .5rem;\n    }\n  }\n\n  > .nav + .nav,\n  > .alert + .alert,\n  > .navbar + .navbar,\n  > .progress + .progress,\n  > .progress + .btn {\n    margin-top: 1rem;\n  }\n\n  > .dropdown-menu:first-child {\n    position: static;\n    display: block;\n  }\n\n  > .form-group:last-child {\n    margin-bottom: 0;\n  }\n\n  > .close {\n    float: none;\n  }\n}\n\n// Typography\n.bd-example-type {\n  .table {\n    .type-info {\n      color: #999;\n      vertical-align: middle;\n    }\n    td {\n      padding: 1rem 0;\n      border-color: #eee;\n    }\n    tr:first-child td {\n      border-top: 0;\n    }\n  }\n\n  h1,\n  h2,\n  h3,\n  h4,\n  h5,\n  h6 {\n    margin-top: 0;\n    margin-bottom: 0;\n  }\n}\n\n// Contextual background colors\n.bd-example-bg-classes p {\n  padding: 1rem;\n}\n\n// Images\n.bd-example > img {\n  + img {\n    margin-left: .5rem;\n  }\n}\n\n// Buttons\n.bd-example {\n  > .btn-group {\n    margin-top: .25rem;\n    margin-bottom: .25rem;\n  }\n  > .btn-toolbar + .btn-toolbar {\n    margin-top: .5rem;\n  }\n}\n\n// Forms\n.bd-example-control-sizing select,\n.bd-example-control-sizing input[type=\"text\"] + input[type=\"text\"] {\n  margin-top: .5rem;\n}\n.bd-example-form .input-group {\n  margin-bottom: .5rem;\n}\n.bd-example > textarea.form-control {\n  resize: vertical;\n}\n\n// List groups\n.bd-example > .list-group {\n  max-width: 400px;\n}\n\n// Navbars\n.bd-example {\n  .fixed-top,\n  .sticky-top {\n    position: static;\n    margin: -1rem -1rem 1rem;\n  }\n  .fixed-bottom {\n    position: static;\n    margin: 1rem -1rem -1rem;\n  }\n\n  @include media-breakpoint-up(sm) {\n    .fixed-top,\n    .sticky-top {\n      margin: -1.5rem -1.5rem 1rem;\n    }\n    .fixed-bottom {\n      margin: 1rem -1.5rem -1.5rem;\n    }\n  }\n}\n\n// Pagination\n.bd-example .pagination {\n  margin-top: .5rem;\n  margin-bottom: .5rem;\n}\n\n// Example modals\n.modal {\n  z-index: 1072;\n\n  .tooltip,\n  .popover {\n    z-index: 1073;\n  }\n}\n\n.modal-backdrop {\n  z-index: 1071;\n}\n\n.bd-example-modal {\n  background-color: #fafafa;\n\n  .modal {\n    position: relative;\n    top: auto;\n    right: auto;\n    bottom: auto;\n    left: auto;\n    z-index: 1;\n    display: block;\n  }\n\n  .modal-dialog {\n    left: auto;\n    margin-right: auto;\n    margin-left: auto;\n  }\n}\n\n// Example tabbable tabs\n.bd-example-tabs .nav-tabs {\n  margin-bottom: 1rem;\n}\n\n// Popovers\n.bd-example-popover-static {\n  padding-bottom: 1.5rem;\n  background-color: #f9f9f9;\n\n  .popover {\n    position: relative;\n    display: block;\n    float: left;\n    width: 260px;\n    margin: 1.25rem;\n  }\n}\n\n// Tooltips\n.tooltip-demo a {\n  white-space: nowrap;\n}\n\n.bd-example-tooltip-static .tooltip {\n  position: relative;\n  display: inline-block;\n  margin: 10px 20px;\n  opacity: 1;\n}\n\n// Scrollspy demo on fixed height div\n.scrollspy-example {\n  position: relative;\n  height: 200px;\n  margin-top: .5rem;\n  overflow: auto;\n}\n\n.scrollspy-example-2 {\n  position: relative;\n  height: 350px;\n  overflow: auto;\n}\n\n.bd-example-border-utils {\n  [class^=\"border\"] {\n    display: inline-block;\n    width: 5rem;\n    height: 5rem;\n    margin: .25rem;\n    background-color: #f5f5f5;\n  }\n}\n\n.bd-example-border-utils-0 {\n  [class^=\"border\"] {\n    border: 1px solid $border-color;\n  }\n}\n\n//\n// Code snippets\n//\n\n.highlight {\n  padding: 1rem;\n  margin-top: 1rem;\n  margin-bottom: 1rem;\n  background-color: $gray-100;\n  -ms-overflow-style: -ms-autohiding-scrollbar;\n\n  @include media-breakpoint-up(sm) {\n    padding: 1.5rem;\n  }\n}\n\n.bd-content .highlight {\n  margin-right: (-$grid-gutter-width / 2);\n  margin-left: (-$grid-gutter-width / 2);\n\n  @include media-breakpoint-up(sm) {\n    margin-right: 0;\n    margin-left: 0;\n  }\n}\n\n.highlight {\n  pre {\n    padding: 0;\n    margin-top: 0;\n    margin-bottom: 0;\n    background-color: transparent;\n    border: 0;\n  }\n  pre code {\n    font-size: inherit;\n    color: $gray-900; // Effectively the base text color\n  }\n}\n","/// Grid system\n//\n// Generate semantic grid columns with these mixins.\n\n@mixin make-container() {\n  width: 100%;\n  padding-right: ($grid-gutter-width / 2);\n  padding-left: ($grid-gutter-width / 2);\n  margin-right: auto;\n  margin-left: auto;\n}\n\n\n// For each breakpoint, define the maximum width of the container in a media query\n@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {\n  @each $breakpoint, $container-max-width in $max-widths {\n    @include media-breakpoint-up($breakpoint, $breakpoints) {\n      max-width: $container-max-width;\n    }\n  }\n}\n\n@mixin make-row() {\n  display: flex;\n  flex-wrap: wrap;\n  margin-right: ($grid-gutter-width / -2);\n  margin-left: ($grid-gutter-width / -2);\n}\n\n@mixin make-col-ready() {\n  position: relative;\n  // Prevent columns from becoming too narrow when at smaller grid tiers by\n  // always setting `width: 100%;`. This works because we use `flex` values\n  // later on to override this initial width.\n  width: 100%;\n  min-height: 1px; // Prevent collapsing\n  padding-right: ($grid-gutter-width / 2);\n  padding-left: ($grid-gutter-width / 2);\n}\n\n@mixin make-col($size, $columns: $grid-columns) {\n  flex: 0 0 percentage($size / $columns);\n  // Add a `max-width` to ensure content within each column does not blow out\n  // the width of the column. Applies to IE10+ and Firefox. Chrome and Safari\n  // do not appear to require this.\n  max-width: percentage($size / $columns);\n}\n\n@mixin make-col-offset($size, $columns: $grid-columns) {\n  $num: $size / $columns;\n  margin-left: if($num == 0, 0, percentage($num));\n}\n","@mixin clearfix() {\n  &::after {\n    display: block;\n    clear: both;\n    content: \"\";\n  }\n}\n","// Buttons\n//\n// Custom buttons for the docs.\n\n.btn-bd-primary {\n  font-weight: 500;\n  color: $bd-purple-bright;\n  border-color: $bd-purple-bright;\n\n  &:hover,\n  &:active {\n    color: #fff;\n    background-color: $bd-purple-bright;\n    border-color: $bd-purple-bright;\n  }\n\n  &:focus {\n    box-shadow: 0 0 0 3px rgba($bd-purple-bright, .25);\n  }\n}\n\n.btn-bd-download {\n  font-weight: 500;\n  color: $bd-download;\n  border-color: $bd-download;\n\n  &:hover,\n  &:active {\n    color: $bd-dark;\n    background-color: $bd-download;\n    border-color: $bd-download;\n  }\n\n  &:focus {\n    box-shadow: 0 0 0 3px rgba($bd-download, .25);\n  }\n}\n","//\n// Callouts\n//\n\n.bd-callout {\n  padding: 1.25rem;\n  margin-top: 1.25rem;\n  margin-bottom: 1.25rem;\n  border: 1px solid #eee;\n  border-left-width: .25rem;\n  border-radius: .25rem;\n}\n\n.bd-callout h4 {\n  margin-top: 0;\n  margin-bottom: .25rem;\n}\n\n.bd-callout p:last-child {\n  margin-bottom: 0;\n}\n\n.bd-callout code {\n  border-radius: .25rem;\n}\n\n.bd-callout + .bd-callout {\n  margin-top: -.25rem;\n}\n\n// Variations\n@mixin bs-callout-variant($color) {\n  border-left-color: $color;\n\n  h4 { color: $color; }\n}\n\n.bd-callout-info { @include bs-callout-variant($bd-info); }\n.bd-callout-warning { @include bs-callout-variant($bd-warning); }\n.bd-callout-danger { @include bs-callout-variant($bd-danger); }\n","//\n// Examples\n//\n\n.bd-examples .img-thumbnail {\n  margin-bottom: .75rem;\n}\n.bd-examples h4 {\n  margin-bottom: .25rem;\n}\n.bd-examples p {\n  margin-bottom: 1.25rem;\n}\n\n@media (max-width: 480px) {\n  .bd-examples {\n    margin-right: -.75rem;\n    margin-left: -.75rem;\n  }\n  .bd-examples > [class^=\"col-\"] {\n    padding-right: .75rem;\n    padding-left: .75rem;\n  }\n}\n","// Wall of Browser Bugs\n//\n// Better display for the responsive table on the Wall of Browser Bugs.\n\n.bd-browser-bugs {\n  td p {\n    margin-bottom: 0;\n  }\n  th:first-child {\n    width: 18%;\n  }\n}\n","// stylelint-disable no-duplicate-selectors\n\n//\n// Brand guidelines\n//\n\n// Logo series wrapper\n.bd-brand-logos {\n  display: table;\n  width: 100%;\n  margin-bottom: 1rem;\n  overflow: hidden;\n  color: #563d7c;\n  background-color: #f9f9f9;\n  border-radius: .25rem;\n}\n\n// Individual items\n.bd-brand-item {\n  padding: 4rem 0;\n  text-align: center;\n}\n.bd-brand-item + .bd-brand-item {\n  border-top: 1px solid #fff;\n}\n.bd-brand-logos .inverse {\n  color: #fff;\n  background-color: #563d7c;\n}\n\n// Heading content within\n.bd-brand-item h1,\n.bd-brand-item h3 {\n  margin-top: 0;\n  margin-bottom: 0;\n}\n.bd-brand-item .bd-booticon {\n  margin-right: auto;\n  margin-left: auto;\n}\n\n// Make the icons stand out on what is/isn't okay\n// .bd-brand-item .glyphicon {\n//   width: 30px;\n//   height: 30px;\n//   margin: 10px auto -10px;\n//   line-height: 30px;\n//   color: #fff;\n//   border-radius: 50%;\n// }\n// .bd-brand-item .glyphicon-ok {\n//   background-color: #5cb85c;\n// }\n// .bd-brand-item .glyphicon-remove {\n//   background-color: #d9534f;\n// }\n\n@media (min-width: 768px) {\n  .bd-brand-item {\n    display: table-cell;\n    width: 1%;\n  }\n  .bd-brand-item + .bd-brand-item {\n    border-top: 0;\n    border-left: 1px solid #fff;\n  }\n  .bd-brand-item h1 {\n    font-size: 4rem;\n  }\n}\n\n\n//\n// Color swatches\n//\n\n.color-swatches {\n  margin: 0 -5px;\n  overflow: hidden; // clearfix\n}\n\n.color-swatch {\n  float: left;\n  width: 4rem;\n  height: 4rem;\n  margin-right: .25rem;\n  margin-left: .25rem;\n  border-radius: .25rem;\n\n  @media (min-width: 768px) {\n    width: 6rem;\n    height: 6rem;\n  }\n}\n\n// Docs colors\n.color-swatches {\n  .bd-purple {\n    background-color: $bd-purple;\n  }\n  .bd-purple-light {\n    background-color: $bd-purple-light;\n  }\n  .bd-purple-lighter {\n    background-color: #e5e1ea;\n  }\n  .bd-gray {\n    background-color: #f9f9f9;\n  }\n}\n","//\n// Docs color palette classes\n//\n\n@each $color, $value in $colors {\n  .swatch-#{$color} {\n    color: color-yiq($value);\n    background-color: #{$value};\n  }\n}\n\n@each $color, $value in $theme-colors {\n  .swatch-#{$color} {\n    color: color-yiq($value);\n    background-color: #{$value};\n  }\n}\n\n@each $color, $value in $grays {\n  .swatch-#{$color} {\n    color: color-yiq($value);\n    background-color: #{$value};\n  }\n}\n","// clipboard.js\n//\n// JS-based `Copy` buttons for code snippets.\n\n.bd-clipboard {\n  position: relative;\n  display: none;\n  float: right;\n\n  + .highlight {\n    margin-top: 0;\n  }\n}\n\n.btn-clipboard {\n  position: absolute;\n  top: .5rem;\n  right: .5rem;\n  z-index: 10;\n  display: block;\n  padding: .25rem .5rem;\n  font-size: 75%;\n  color: #818a91;\n  cursor: pointer;\n  background-color: transparent;\n  border: 0;\n  border-radius: .25rem;\n\n  &:hover {\n    color: #fff;\n    background-color: #027de7;\n  }\n}\n\n@media (min-width: 768px) {\n  .bd-clipboard {\n    display: block;\n  }\n}\n","// stylelint-disable declaration-block-single-line-max-declarations\n\n.hll { background-color: #ffc; }\n.c { color: #999; }\n.k { color: #069; }\n.o { color: #555; }\n.cm { color: #999; }\n.cp { color: #099; }\n.c1 { color: #999; }\n.cs { color: #999; }\n.gd { background-color: #fcc; border: 1px solid #c00; }\n.ge { font-style: italic; }\n.gr { color: #f00; }\n.gh { color: #030; }\n.gi { background-color: #cfc; border: 1px solid #0c0; }\n.go { color: #aaa; }\n.gp { color: #009; }\n.gu { color: #030; }\n.gt { color: #9c6; }\n.kc { color: #069; }\n.kd { color: #069; }\n.kn { color: #069; }\n.kp { color: #069; }\n.kr { color: #069; }\n.kt { color: #078; }\n.m { color: #f60; }\n.s { color: #d44950; }\n.na { color: #4f9fcf; }\n.nb { color: #366; }\n.nc { color: #0a8; }\n.no { color: #360; }\n.nd { color: #99f; }\n.ni { color: #999; }\n.ne { color: #c00; }\n.nf { color: #c0f; }\n.nl { color: #99f; }\n.nn { color: #0cf; }\n.nt { color: #2f6f9f; }\n.nv { color: #033; }\n.ow { color: #000; }\n.w { color: #bbb; }\n.mf { color: #f60; }\n.mh { color: #f60; }\n.mi { color: #f60; }\n.mo { color: #f60; }\n.sb { color: #c30; }\n.sc { color: #c30; }\n.sd { font-style: italic; color: #c30; }\n.s2 { color: #c30; }\n.se { color: #c30; }\n.sh { color: #c30; }\n.si { color: #a00; }\n.sx { color: #c30; }\n.sr { color: #3aa; }\n.s1 { color: #c30; }\n.ss { color: #fc3; }\n.bp { color: #366; }\n.vc { color: #033; }\n.vg { color: #033; }\n.vi { color: #033; }\n.il { color: #f60; }\n\n.css .o,\n.css .o + .nt,\n.css .nt + .nt { color: #999; }\n\n.language-bash::before,\n.language-sh::before {\n  color: #009;\n  content: \"$ \";\n  user-select: none;\n}\n\n.language-powershell::before {\n  color: #009;\n  content: \"PM> \";\n  user-select: none;\n}\n",".anchorjs-link {\n  font-weight: 400;\n  color: rgba($link-color, .5);\n  transition: color .16s linear;\n\n  &:hover {\n    color: $link-color;\n    text-decoration: none;\n  }\n}\n","// stylelint-disable declaration-no-important\n\n// Docsearch overrides\n//\n// `!important` indicates overridden properties.\n.algolia-autocomplete {\n  display: block !important;\n  flex: 1;\n\n  // Menu container\n  .ds-dropdown-menu {\n    width: 100%;\n    min-width: 0 !important;\n    max-width: none !important;\n    padding: .75rem 0 !important;\n    background-color: #fff;\n    background-clip: padding-box;\n    border: 1px solid rgba(0, 0, 0, .1);\n    box-shadow: 0 .5rem 1rem rgba(0, 0, 0, .175);\n\n    @include media-breakpoint-up(md) {\n      width: 175%;\n    }\n\n    // Caret\n    &::before {\n      display: none !important;\n    }\n\n    [class^=\"ds-dataset-\"] {\n      padding: 0 !important;\n      overflow: visible !important;\n      background-color: transparent !important;\n      border: 0 !important;\n    }\n\n    .ds-suggestions {\n      margin-top: 0 !important;\n    }\n  }\n\n  .algolia-docsearch-suggestion {\n    padding: 0 !important;\n    overflow: visible !important;\n  }\n\n  .algolia-docsearch-suggestion--category-header {\n    padding: .125rem 1rem !important;\n    margin-top: 0 !important;\n    font-size: .875rem !important;\n    font-weight: 500 !important;\n    color: $bd-purple-bright !important;\n    border-bottom: 0 !important;\n  }\n\n  .algolia-docsearch-suggestion--wrapper {\n    float: none !important;\n    padding-top: 0 !important;\n  }\n\n  // Section header\n  .algolia-docsearch-suggestion--subcategory-column {\n    float: none !important;\n    width: auto !important;\n    padding: 0 !important;\n    text-align: left !important;\n  }\n\n  .algolia-docsearch-suggestion--content {\n    float: none !important;\n    width: auto !important;\n    padding: 0 !important;\n\n    // Vertical divider between column header and content\n    &::before {\n      display: none !important;\n    }\n  }\n\n  .ds-suggestion {\n    &:not(:first-child) {\n      .algolia-docsearch-suggestion--category-header {\n        padding-top: .75rem !important;\n        margin-top: .75rem !important;\n        border-top: 1px solid rgba(0, 0, 0, .1);\n      }\n    }\n\n    .algolia-docsearch-suggestion--subcategory-column {\n      display: none !important;\n    }\n  }\n\n  .algolia-docsearch-suggestion--title {\n    display: block;\n    padding: .25rem 1rem !important;\n    margin-bottom: 0 !important;\n    font-size: .875rem !important;\n    font-weight: 400 !important;\n  }\n\n  .algolia-docsearch-suggestion--text {\n    padding: 0 1rem .5rem !important;\n    margin-top: -.25rem;\n    font-size: .875rem !important;\n    font-weight: 400;\n    line-height: 1.25 !important;\n  }\n\n  .algolia-docsearch-footer {\n    float: none !important;\n    width: auto !important;\n    height: auto !important;\n    padding: .75rem 1rem 0;\n    font-size: .75rem !important;\n    line-height: 1 !important;\n    color: #767676 !important;\n    border-top: 1px solid rgba(0, 0, 0, .1);\n  }\n\n  .algolia-docsearch-footer--logo {\n    display: inline !important;\n    overflow: visible !important;\n    color: inherit !important;\n    text-indent: 0 !important;\n    background: none !important;\n  }\n\n  .algolia-docsearch-suggestion--highlight {\n    color: #5f2dab;\n    background-color: rgba(154, 132, 187, .12);\n  }\n\n  .algolia-docsearch-suggestion--text .algolia-docsearch-suggestion--highlight {\n    box-shadow: inset 0 -2px 0 0 rgba(95, 45, 171, .5) !important;\n  }\n\n  .ds-suggestion.ds-cursor .algolia-docsearch-suggestion--content {\n    background-color: rgba(208, 189, 236, .15) !important;\n  }\n}\n"]}
+\ No newline at end of file
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/bootstrap-stack.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/bootstrap-stack.png
new file mode 100644
index 000000000..7cae17fe2
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/bootstrap-stack.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/bootstrap-themes.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/bootstrap-themes.png
new file mode 100644
index 000000000..3876a18ee
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/bootstrap-themes.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/android-chrome-192x192.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/android-chrome-192x192.png
new file mode 100644
index 000000000..547386f37
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/android-chrome-192x192.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/android-chrome-512x512.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/android-chrome-512x512.png
new file mode 100644
index 000000000..eae76488d
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/android-chrome-512x512.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/apple-touch-icon.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/apple-touch-icon.png
new file mode 100644
index 000000000..447cec2c4
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/apple-touch-icon.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/browserconfig.xml b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/browserconfig.xml
new file mode 100644
index 000000000..810292778
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/browserconfig.xml
@@ -0,0 +1,11 @@
+---
+---
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+    <msapplication>
+        <tile>
+            <square150x150logo src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/mstile-150x150.png"/>
+            <TileColor>#563d7c</TileColor>
+        </tile>
+    </msapplication>
+</browserconfig>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/favicon-16x16.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/favicon-16x16.png
new file mode 100644
index 000000000..5f7d11880
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/favicon-16x16.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/favicon-32x32.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/favicon-32x32.png
new file mode 100644
index 000000000..d752fd5d7
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/favicon-32x32.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/manifest.json b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/manifest.json
new file mode 100644
index 000000000..88b2b7f41
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/manifest.json
@@ -0,0 +1,22 @@
+---
+---
+{
+    "name": "Bootstrap",
+    "short_name": "Bootstrap",
+    "icons": [
+        {
+            "src": "{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/android-chrome-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/favicons/android-chrome-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ],
+    "start_url": "/",
+    "theme_color": "#563d7c",
+    "background_color": "#563d7c",
+    "display": "standalone"
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-144x144.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-144x144.png
new file mode 100644
index 000000000..262a3c2e1
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-144x144.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-150x150.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-150x150.png
new file mode 100644
index 000000000..bb87faf74
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-150x150.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-310x150.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-310x150.png
new file mode 100644
index 000000000..2fc36a726
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-310x150.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-310x310.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-310x310.png
new file mode 100644
index 000000000..7f00d0c66
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-310x310.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-70x70.png b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-70x70.png
new file mode 100644
index 000000000..4da2de9e3
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/mstile-70x70.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/safari-pinned-tab.svg b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/safari-pinned-tab.svg
new file mode 100644
index 000000000..ddeeb53c9
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/img/favicons/safari-pinned-tab.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="933.333" height="933.333" version="1" viewBox="0 0 700 700">
+  <path d="M104.5.7C89.2 2.6 77.4 6.2 63.8 13.2 41.7 24.5 24.5 41.7 13.2 63.8 7.5 75.1 4.8 82.3 2.3 94 .6 102.1.5 114.3.5 350s.1 247.9 1.8 256c2.5 11.7 5.2 18.9 10.9 30.2 11.3 22.1 28.5 39.3 50.6 50.6 11.3 5.7 18.5 8.4 30.2 10.9 8.1 1.7 20.3 1.8 256 1.8s247.9-.1 256-1.8c11.7-2.5 18.9-5.2 30.2-10.9 22.1-11.3 39.3-28.5 50.6-50.6 5.7-11.3 8.4-18.5 10.9-30.2 1.7-8.1 1.8-20.3 1.8-256s-.1-247.9-1.8-256c-2.5-11.7-5.2-18.9-10.9-30.2C670.9 32.6 642.9 11 607 2.4 599.9.7 587.2.6 353.5.4 218.2.3 106.2.5 104.5.7zm315.3 153.6c47.4 9 75.3 30.5 85.6 65.9 5.1 17.8 5.6 43.1 1.1 60.3-2 7.5-7.9 20.3-12.2 26.4-8 11.3-21.9 22.8-36 30-3.5 1.7-6.3 3.5-6.3 3.9 0 .5 2.3 1.4 5.1 2 2.8.7 8.5 2.6 12.7 4.3 37.2 14.8 58.1 50.4 58.2 99 0 28.6-9 53.9-25.7 71.8-18.8 20.3-45.2 32.9-83.3 39.8-8.5 1.5-20.9 1.7-119.2 2l-109.8.4V151.9l110.8.4c95.5.3 111.8.6 119 2z"/>
+  <path d="M262 266.5v56.6l65.3-.4c57.2-.3 65.9-.5 70.7-2 15.8-4.8 28.7-14.9 34.4-27.1 4.4-9.2 5.6-15.3 5.6-28.4-.1-25.1-7.5-39.8-24.3-47.7-14.1-6.7-14.2-6.7-86.4-7.2l-65.3-.5v56.7zm0 171.5v64.1l71.3-.3c69.8-.3 71.4-.4 79-2.6 11.4-3.2 19.2-7.7 27.2-15.7 12.1-12 16.8-24.9 16.8-46 0-20.8-5.1-34.3-17.3-45.9-7.9-7.4-15.8-11.6-28.1-14.7-8.1-2.1-10.5-2.2-78.6-2.6l-70.3-.5V438z"/>
+</svg>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/.eslintrc.json b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/.eslintrc.json
new file mode 100644
index 000000000..e24f3dd09
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/.eslintrc.json
@@ -0,0 +1,26 @@
+{
+  "env": {
+    "es6": false,
+    "jquery": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 5,
+    "sourceType": "script"
+  },
+  "extends": "../../../../../.eslintrc.json",
+  "rules": {
+    // Best Practices
+    "no-magic-numbers": "off",
+    "vars-on-top": "off",
+
+    // Stylistic Issues
+    "spaced-comment": "off",
+
+    // ECMAScript 6
+    "no-var": "off",
+    "object-shorthand": "off",
+    "prefer-arrow-callback": "off",
+    "prefer-template": "off",
+    "prefer-rest-params": "off"
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/docs.min.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/docs.min.js
new file mode 100644
index 000000000..cce24b993
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/docs.min.js
@@ -0,0 +1,28 @@
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+/*!
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+ * https://zenorocha.github.io/clipboard.js
+ * 
+ * Licensed MIT © Zeno Rocha
+ */
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.ClipboardJS=t():e.ClipboardJS=t()}(this,function(){return function(n){function r(e){if(i[e])return i[e].exports;var t=i[e]={i:e,l:!1,exports:{}};return n[e].call(t.exports,t,t.exports,r),t.l=!0,t.exports}var i={};return r.m=n,r.c=i,r.i=function(e){return e},r.d=function(e,t,n){r.o(e,t)||Object.defineProperty(e,t,{configurable:!1,enumerable:!0,get:n})},r.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return r.d(t,"a",t),t},r.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},r.p="",r(r.s=3)}([function(n,r,i){var o,a,s;!function(e,t){a=[n,i(7)],o=t,void 0!==(s="function"==typeof o?o.apply(r,a):o)&&(n.exports=s)}(0,function(e,t){"use strict";function n(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=function(e){return e&&e.__esModule?e:{default:e}}(t),i="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},o=function(){function r(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(e,t,n){return t&&r(e.prototype,t),n&&r(e,n),e}}(),a=function(){function t(e){n(this,t),this.resolveOptions(e),this.initSelection()}return o(t,[{key:"resolveOptions",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.action=e.action,this.container=e.container,this.emitter=e.emitter,this.target=e.target,this.text=e.text,this.trigger=e.trigger,this.selectedText=""}},{key:"initSelection",value:function(){this.text?this.selectFake():this.target&&this.selectTarget()}},{key:"selectFake",value:function(){var e=this,t="rtl"==document.documentElement.getAttribute("dir");this.removeFake(),this.fakeHandlerCallback=function(){return e.removeFake()},this.fakeHandler=this.container.addEventListener("click",this.fakeHandlerCallback)||!0,this.fakeElem=document.createElement("textarea"),this.fakeElem.style.fontSize="12pt",this.fakeElem.style.border="0",this.fakeElem.style.padding="0",this.fakeElem.style.margin="0",this.fakeElem.style.position="absolute",this.fakeElem.style[t?"right":"left"]="-9999px";var n=window.pageYOffset||document.documentElement.scrollTop;this.fakeElem.style.top=n+"px",this.fakeElem.setAttribute("readonly",""),this.fakeElem.value=this.text,this.container.appendChild(this.fakeElem),this.selectedText=(0,r.default)(this.fakeElem),this.copyText()}},{key:"removeFake",value:function(){this.fakeHandler&&(this.container.removeEventListener("click",this.fakeHandlerCallback),this.fakeHandler=null,this.fakeHandlerCallback=null),this.fakeElem&&(this.container.removeChild(this.fakeElem),this.fakeElem=null)}},{key:"selectTarget",value:function(){this.selectedText=(0,r.default)(this.target),this.copyText()}},{key:"copyText",value:function(){var t=void 0;try{t=document.execCommand(this.action)}catch(e){t=!1}this.handleResult(t)}},{key:"handleResult",value:function(e){this.emitter.emit(e?"success":"error",{action:this.action,text:this.selectedText,trigger:this.trigger,clearSelection:this.clearSelection.bind(this)})}},{key:"clearSelection",value:function(){this.trigger&&this.trigger.focus(),window.getSelection().removeAllRanges()}},{key:"destroy",value:function(){this.removeFake()}},{key:"action",set:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"copy";if(this._action=e,"copy"!==this._action&&"cut"!==this._action)throw new Error('Invalid "action" value, use either "copy" or "cut"')},get:function(){return this._action}},{key:"target",set:function(e){if(void 0!==e){if(!e||"object"!==(void 0===e?"undefined":i(e))||1!==e.nodeType)throw new Error('Invalid "target" value, use a valid Element');if("copy"===this.action&&e.hasAttribute("disabled"))throw new Error('Invalid "target" attribute. 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+/*!
+
+Holder - client side image placeholders
+Version 2.9.4+cabil
+© 2016 Ivan Malopinsky - http://imsky.co
+
+Site:     http://holderjs.com
+Issues:   https://github.com/imsky/holder/issues
+License:  MIT
+
+*/
+!function(i){if(i.document){var o=i.document;o.querySelectorAll||(o.querySelectorAll=function(e){var t,n=o.createElement("style"),r=[];for(o.documentElement.firstChild.appendChild(n),o._qsa=[],n.styleSheet.cssText=e+"{x-qsa:expression(document._qsa && document._qsa.push(this))}",i.scrollBy(0,0),n.parentNode.removeChild(n);o._qsa.length;)t=o._qsa.shift(),t.style.removeAttribute("x-qsa"),r.push(t);return o._qsa=null,r}),o.querySelector||(o.querySelector=function(e){var t=o.querySelectorAll(e);return t.length?t[0]:null}),o.getElementsByClassName||(o.getElementsByClassName=function(e){return e=String(e).replace(/^|\s+/g,"."),o.querySelectorAll(e)}),Object.keys||(Object.keys=function(e){if(e!==Object(e))throw TypeError("Object.keys called on non-object");var t,n=[];for(t in e)Object.prototype.hasOwnProperty.call(e,t)&&n.push(t);return n}),Array.prototype.forEach||(Array.prototype.forEach=function(e){if(void 0===this||null===this)throw TypeError();var 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+/*!
+ * JavaScript for Bootstrap's docs (https://getbootstrap.com/)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under the Creative Commons Attribution 3.0 Unported License. For
+ * details, see https://creativecommons.org/licenses/by/3.0/.
+ */
+(function(i){"use strict";i(function(){i(".tooltip-demo").tooltip({selector:'[data-toggle="tooltip"]',container:"body"});i('[data-toggle="popover"]').popover();i(".tooltip-test").tooltip();i(".popover-test").popover();i('.bd-example-indeterminate [type="checkbox"]').prop("indeterminate",true);i('.bd-content [href="#"]').click(function(e){e.preventDefault()});i("#exampleModal").on("show.bs.modal",function(e){var t=i(e.relatedTarget);var n=t.data("whatever");var r=i(this);r.find(".modal-title").text("New message to "+n);r.find(".modal-body input").val(n)});i(".bd-toggle-animated-progress").on("click",function(){i(this).siblings(".progress").find(".progress-bar-striped").toggleClass("progress-bar-animated")});i("figure.highlight, div.highlight").each(function(){var e='<div class="bd-clipboard"><button class="btn-clipboard" title="Copy to clipboard">Copy</button></div>';i(this).before(e);i(".btn-clipboard").tooltip().on("mouseleave",function(){i(this).tooltip("hide")})});var e=new ClipboardJS(".btn-clipboard",{target:function(e){return e.parentNode.nextElementSibling}});e.on("success",function(e){i(e.trigger).attr("title","Copied!").tooltip("_fixTitle").tooltip("show").attr("title","Copy to clipboard").tooltip("_fixTitle");e.clearSelection()});e.on("error",function(e){var t=/Mac/i.test(navigator.userAgent)?"⌘":"Ctrl-";var n="Press "+t+"C to copy";i(e.trigger).attr("title",n).tooltip("_fixTitle").tooltip("show").attr("title","Copy to clipboard").tooltip("_fixTitle")});anchors.options={icon:"#"};anchors.add(".bd-content > h2, .bd-content > h3, .bd-content > h4, .bd-content > h5");i(".bd-content > h2, .bd-content > h3, .bd-content > h4, .bd-content > h5").wrapInner("<div></div>");Holder.addTheme("gray",{bg:"#777",fg:"rgba(255,255,255,.75)",font:"Helvetica",fontweight:"normal"})})})(jQuery);(function(){"use strict";function e(){var e=/MSIE ([0-9.]+)/.exec(window.navigator.userAgent);if(e===null){return null}var t=parseInt(e[1],10);var n=Math.floor(t);return n}function t(){var e=new Function("/*@cc_on return @_jscript_version; @*/")();if(typeof e==="undefined"){return 11}if(e<9){return 8}return e}var n=window.navigator.userAgent;if(n.indexOf("Opera")>-1||n.indexOf("Presto")>-1){return}var r=e();if(r===null){return}var i=t();if(r!==i){window.alert("WARNING: You appear to be using IE"+i+" in IE"+r+" emulation mode.\nIE emulation modes can behave significantly differently from ACTUAL older versions of IE.\nPLEASE DON'T FILE BOOTSTRAP BUGS based on testing in IE emulation modes!")}})();(function(){"use strict";if("serviceWorker"in navigator){window.addEventListener("load",function(){navigator.serviceWorker.register("/sw.js").then(function(e){console.log("ServiceWorker registration successful with scope: ",e.scope)}).catch(function(e){console.log("ServiceWorker registration failed: ",e)})})}else{console.log("Service workers are not supported.")}})();(function(){"use strict";if(!window.docsearch){return}var r=document.getElementById("search-input");var e=r.getAttribute("data-docs-version");window.docsearch({apiKey:"5990ad008512000bba2cf951ccf0332f",indexName:"bootstrap",inputSelector:"#search-input",algoliaOptions:{facetFilters:["version:"+e]},handleSelected:function(e,t,n){var r=n.url;r=n.isLvl1?r.split("#")[0]:r;window.location.href=r},transformData:function(e){return e.map(function(e){var t=r.getAttribute("data-siteurl");var n=/^https?:\/\/getbootstrap\.com/;e.url=t.match(n)?e.url:e.url.replace(n,"");return e})},debug:false})})();
+\ No newline at end of file
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/application.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/application.js
new file mode 100644
index 000000000..7666da065
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/application.js
@@ -0,0 +1,112 @@
+// NOTICE!! DO NOT USE ANY OF THIS JAVASCRIPT
+// IT'S ALL JUST JUNK FOR OUR DOCS!
+// ++++++++++++++++++++++++++++++++++++++++++
+
+/*!
+ * JavaScript for Bootstrap's docs (https://getbootstrap.com/)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under the Creative Commons Attribution 3.0 Unported License. For
+ * details, see https://creativecommons.org/licenses/by/3.0/.
+ */
+
+/* global ClipboardJS: false, anchors: false, Holder: false */
+
+(function ($) {
+  'use strict'
+
+  $(function () {
+    // Tooltip and popover demos
+    $('.tooltip-demo').tooltip({
+      selector: '[data-toggle="tooltip"]',
+      container: 'body'
+    })
+
+    $('[data-toggle="popover"]').popover()
+
+    // Demos within modals
+    $('.tooltip-test').tooltip()
+    $('.popover-test').popover()
+
+    // Indeterminate checkbox example
+    $('.bd-example-indeterminate [type="checkbox"]').prop('indeterminate', true)
+
+    // Disable empty links in docs examples
+    $('.bd-content [href="#"]').click(function (e) {
+      e.preventDefault()
+    })
+
+    // Modal relatedTarget demo
+    $('#exampleModal').on('show.bs.modal', function (event) {
+      var $button = $(event.relatedTarget)      // Button that triggered the modal
+      var recipient = $button.data('whatever')  // Extract info from data-* attributes
+      // If necessary, you could initiate an AJAX request here (and then do the updating in a callback).
+      // Update the modal's content. We'll use jQuery here, but you could use a data binding library or other methods instead.
+      var $modal = $(this)
+      $modal.find('.modal-title').text('New message to ' + recipient)
+      $modal.find('.modal-body input').val(recipient)
+    })
+
+    // Activate animated progress bar
+    $('.bd-toggle-animated-progress').on('click', function () {
+      $(this).siblings('.progress').find('.progress-bar-striped').toggleClass('progress-bar-animated')
+    })
+
+    // Insert copy to clipboard button before .highlight
+    $('figure.highlight, div.highlight').each(function () {
+      var btnHtml = '<div class="bd-clipboard"><button class="btn-clipboard" title="Copy to clipboard">Copy</button></div>'
+      $(this).before(btnHtml)
+      $('.btn-clipboard')
+        .tooltip()
+        .on('mouseleave', function () {
+          // Explicitly hide tooltip, since after clicking it remains
+          // focused (as it's a button), so tooltip would otherwise
+          // remain visible until focus is moved away
+          $(this).tooltip('hide')
+        })
+    })
+
+    var clipboard = new ClipboardJS('.btn-clipboard', {
+      target: function (trigger) {
+        return trigger.parentNode.nextElementSibling
+      }
+    })
+
+    clipboard.on('success', function (e) {
+      $(e.trigger)
+        .attr('title', 'Copied!')
+        .tooltip('_fixTitle')
+        .tooltip('show')
+        .attr('title', 'Copy to clipboard')
+        .tooltip('_fixTitle')
+
+      e.clearSelection()
+    })
+
+    clipboard.on('error', function (e) {
+      var modifierKey = /Mac/i.test(navigator.userAgent) ? '\u2318' : 'Ctrl-'
+      var fallbackMsg = 'Press ' + modifierKey + 'C to copy'
+
+      $(e.trigger)
+        .attr('title', fallbackMsg)
+        .tooltip('_fixTitle')
+        .tooltip('show')
+        .attr('title', 'Copy to clipboard')
+        .tooltip('_fixTitle')
+    })
+
+    anchors.options = {
+      icon: '#'
+    }
+    anchors.add('.bd-content > h2, .bd-content > h3, .bd-content > h4, .bd-content > h5')
+    $('.bd-content > h2, .bd-content > h3, .bd-content > h4, .bd-content > h5').wrapInner('<div></div>')
+
+    // Holder
+    Holder.addTheme('gray', {
+      bg: '#777',
+      fg: 'rgba(255,255,255,.75)',
+      font: 'Helvetica',
+      fontweight: 'normal'
+    })
+  })
+}(jQuery))
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/ie-emulation-modes-warning.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/ie-emulation-modes-warning.js
new file mode 100644
index 000000000..610128e27
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/ie-emulation-modes-warning.js
@@ -0,0 +1,47 @@
+// NOTICE!! DO NOT USE ANY OF THIS JAVASCRIPT
+// IT'S ALL JUST JUNK FOR OUR DOCS!
+// ++++++++++++++++++++++++++++++++++++++++++
+
+// Intended to prevent false-positive bug reports about Bootstrap not working properly in old versions of IE due to folks testing using IE's unreliable emulation modes.
+(function () {
+  'use strict'
+
+  function emulatedIEMajorVersion() {
+    var groups = /MSIE ([0-9.]+)/.exec(window.navigator.userAgent)
+    if (groups === null) {
+      return null
+    }
+    var ieVersionNum = parseInt(groups[1], 10)
+    var ieMajorVersion = Math.floor(ieVersionNum)
+    return ieMajorVersion
+  }
+
+  function actualNonEmulatedIEMajorVersion() {
+    // Detects the actual version of IE in use, even if it's in an older-IE emulation mode.
+    // IE JavaScript conditional compilation docs: https://msdn.microsoft.com/library/121hztk3%28v=vs.94%29.aspx
+    // @cc_on docs: https://msdn.microsoft.com/library/8ka90k2e%28v=vs.94%29.aspx
+    var jscriptVersion = new Function('/*@cc_on return @_jscript_version; @*/')() // eslint-disable-line no-new-func
+    if (typeof jscriptVersion === 'undefined') {
+      return 11 // IE11+ not in emulation mode
+    }
+    if (jscriptVersion < 9) {
+      return 8 // IE8 (or lower; haven't tested on IE<8)
+    }
+    return jscriptVersion // IE9 or IE10 in any mode, or IE11 in non-IE11 mode
+  }
+
+  var ua = window.navigator.userAgent
+  if (ua.indexOf('Opera') > -1 || ua.indexOf('Presto') > -1) {
+    return // Opera, which might pretend to be IE
+  }
+  var emulated = emulatedIEMajorVersion()
+  if (emulated === null) {
+    return // Not IE
+  }
+  var nonEmulated = actualNonEmulatedIEMajorVersion()
+
+  if (emulated !== nonEmulated) {
+    // eslint-disable-next-line no-alert
+    window.alert('WARNING: You appear to be using IE' + nonEmulated + ' in IE' + emulated + ' emulation mode.\nIE emulation modes can behave significantly differently from ACTUAL older versions of IE.\nPLEASE DON\'T FILE BOOTSTRAP BUGS based on testing in IE emulation modes!')
+  }
+}())
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/pwa.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/pwa.js
new file mode 100644
index 000000000..142f89915
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/pwa.js
@@ -0,0 +1,21 @@
+// NOTICE!! DO NOT USE ANY OF THIS JAVASCRIPT
+// IT'S ALL JUST JUNK FOR OUR DOCS!
+// ++++++++++++++++++++++++++++++++++++++++++
+
+/* eslint no-console:off */
+
+(function () {
+  'use strict'
+
+  if ('serviceWorker' in navigator) {
+    window.addEventListener('load', function () {
+      navigator.serviceWorker.register('/sw.js').then(function (registration) { // eslint-disable-line compat/compat
+        console.log('ServiceWorker registration successful with scope: ', registration.scope)
+      }).catch(function (err) {
+        console.log('ServiceWorker registration failed: ', err)
+      })
+    })
+  } else {
+    console.log('Service workers are not supported.')
+  }
+}())
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/search.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/search.js
new file mode 100644
index 000000000..2e91fcf21
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/src/search.js
@@ -0,0 +1,42 @@
+// NOTICE!! DO NOT USE ANY OF THIS JAVASCRIPT
+// IT'S ALL JUST JUNK FOR OUR DOCS!
+// ++++++++++++++++++++++++++++++++++++++++++
+
+(function () {
+  'use strict'
+
+  if (!window.docsearch) {
+    return
+  }
+
+  var inputElement = document.getElementById('search-input')
+  var siteDocsVersion = inputElement.getAttribute('data-docs-version')
+
+  window.docsearch({
+    apiKey: '5990ad008512000bba2cf951ccf0332f',
+    indexName: 'bootstrap',
+    inputSelector: '#search-input',
+    algoliaOptions: {
+      facetFilters: ['version:' + siteDocsVersion]
+    },
+    handleSelected: function (input, event, suggestion) {
+      var url = suggestion.url
+      url = suggestion.isLvl1 ? url.split('#')[0] : url
+      // If it's a title we remove the anchor so it does not jump.
+      window.location.href = url
+    },
+    transformData: function (hits) {
+      return hits.map(function (hit) {
+        // When in production, return the result as is,
+        // otherwise remove our url from it.
+        var siteurl = inputElement.getAttribute('data-siteurl')
+        var urlRE = /^https?:\/\/getbootstrap\.com/
+
+        hit.url = siteurl.match(urlRE) ? hit.url : hit.url.replace(urlRE, '')
+
+        return hit
+      })
+    },
+    debug: false // Set debug to true if you want to inspect the dropdown
+  })
+}())
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/anchor.min.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/anchor.min.js
new file mode 100644
index 000000000..ee4e3b3f4
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/anchor.min.js
@@ -0,0 +1,6 @@
+/**
+ * AnchorJS - v4.1.0 - 2017-09-20
+ * https://github.com/bryanbraun/anchorjs
+ * Copyright (c) 2017 Bryan Braun; Licensed MIT
+ */
+!function(A,e){"use strict";"function"==typeof define&&define.amd?define([],e):"object"==typeof module&&module.exports?module.exports=e():(A.AnchorJS=e(),A.anchors=new A.AnchorJS)}(this,function(){"use strict";return function(A){function e(A){A.icon=A.hasOwnProperty("icon")?A.icon:"",A.visible=A.hasOwnProperty("visible")?A.visible:"hover",A.placement=A.hasOwnProperty("placement")?A.placement:"right",A.ariaLabel=A.hasOwnProperty("ariaLabel")?A.ariaLabel:"Anchor",A.class=A.hasOwnProperty("class")?A.class:"",A.truncate=A.hasOwnProperty("truncate")?Math.floor(A.truncate):64}function t(A){var e;if("string"==typeof A||A instanceof String)e=[].slice.call(document.querySelectorAll(A));else{if(!(Array.isArray(A)||A instanceof NodeList))throw new Error("The selector provided to AnchorJS was invalid.");e=[].slice.call(A)}return e}function i(){if(null===document.head.querySelector("style.anchorjs")){var A,e=document.createElement("style");e.className="anchorjs",e.appendChild(document.createTextNode("")),void 0===(A=document.head.querySelector('[rel="stylesheet"], style'))?document.head.appendChild(e):document.head.insertBefore(e,A),e.sheet.insertRule(" .anchorjs-link {   opacity: 0;   text-decoration: none;   -webkit-font-smoothing: antialiased;   -moz-osx-font-smoothing: grayscale; }",e.sheet.cssRules.length),e.sheet.insertRule(" *:hover > .anchorjs-link, .anchorjs-link:focus  {   opacity: 1; }",e.sheet.cssRules.length),e.sheet.insertRule(" [data-anchorjs-icon]::after {   content: attr(data-anchorjs-icon); }",e.sheet.cssRules.length),e.sheet.insertRule(' @font-face {   font-family: "anchorjs-icons";   src: url(data:n/a;base64,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) format("truetype"); }',e.sheet.cssRules.length)}}this.options=A||{},this.elements=[],e(this.options),this.isTouchDevice=function(){return!!("ontouchstart"in window||window.DocumentTouch&&document instanceof DocumentTouch)},this.add=function(A){var n,o,s,a,r,c,h,l,u,d,f,p=[];if(e(this.options),"touch"===(f=this.options.visible)&&(f=this.isTouchDevice()?"always":"hover"),A||(A="h2, h3, h4, h5, h6"),0===(n=t(A)).length)return this;for(i(),o=document.querySelectorAll("[id]"),s=[].map.call(o,function(A){return A.id}),r=0;r<n.length;r++)if(this.hasAnchorJSLink(n[r]))p.push(r);else{if(n[r].hasAttribute("id"))a=n[r].getAttribute("id");else if(n[r].hasAttribute("data-anchor-id"))a=n[r].getAttribute("data-anchor-id");else{u=l=this.urlify(n[r].textContent),h=0;do{void 0!==c&&(u=l+"-"+h),c=s.indexOf(u),h+=1}while(-1!==c);c=void 0,s.push(u),n[r].setAttribute("id",u),a=u}a.replace(/-/g," "),(d=document.createElement("a")).className="anchorjs-link "+this.options.class,d.href="#"+a,d.setAttribute("aria-label",this.options.ariaLabel),d.setAttribute("data-anchorjs-icon",this.options.icon),"always"===f&&(d.style.opacity="1"),""===this.options.icon&&(d.style.font="1em/1 anchorjs-icons","left"===this.options.placement&&(d.style.lineHeight="inherit")),"left"===this.options.placement?(d.style.position="absolute",d.style.marginLeft="-1em",d.style.paddingRight="0.5em",n[r].insertBefore(d,n[r].firstChild)):(d.style.paddingLeft="0.375em",n[r].appendChild(d))}for(r=0;r<p.length;r++)n.splice(p[r]-r,1);return this.elements=this.elements.concat(n),this},this.remove=function(A){for(var e,i,n=t(A),o=0;o<n.length;o++)(i=n[o].querySelector(".anchorjs-link"))&&(-1!==(e=this.elements.indexOf(n[o]))&&this.elements.splice(e,1),n[o].removeChild(i));return this},this.removeAll=function(){this.remove(this.elements)},this.urlify=function(A){var t=/[& +$,:;=?@"#{}|^~[`%!'<>\]\.\/\(\)\*\\]/g;return this.options.truncate||e(this.options),A.trim().replace(/\'/gi,"").replace(t,"-").replace(/-{2,}/g,"-").substring(0,this.options.truncate).replace(/^-+|-+$/gm,"").toLowerCase()},this.hasAnchorJSLink=function(A){var e=A.firstChild&&(" "+A.firstChild.className+" ").indexOf(" anchorjs-link ")>-1,t=A.lastChild&&(" "+A.lastChild.className+" ").indexOf(" anchorjs-link ")>-1;return e||t||!1}}});
+\ No newline at end of file
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/clipboard.min.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/clipboard.min.js
new file mode 100644
index 000000000..b00ee5153
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/clipboard.min.js
@@ -0,0 +1,7 @@
+/*!
+ * clipboard.js v2.0.0
+ * https://zenorocha.github.io/clipboard.js
+ * 
+ * Licensed MIT © Zeno Rocha
+ */
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return function(t){function e(o){if(n[o])return n[o].exports;var r=n[o]={i:o,l:!1,exports:{}};return t[o].call(r.exports,r,r.exports,e),r.l=!0,r.exports}var n={};return e.m=t,e.c=n,e.i=function(t){return t},e.d=function(t,n,o){e.o(t,n)||Object.defineProperty(t,n,{configurable:!1,enumerable:!0,get:o})},e.n=function(t){var n=t&&t.__esModule?function(){return t.default}:function(){return t};return e.d(n,"a",n),n},e.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},e.p="",e(e.s=3)}([function(t,e,n){var o,r,i;!function(a,c){r=[t,n(7)],o=c,void 0!==(i="function"==typeof o?o.apply(e,r):o)&&(t.exports=i)}(0,function(t,e){"use strict";function n(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}var o=function(t){return t&&t.__esModule?t:{default:t}}(e),r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},i=function(){function t(t,e){for(var n=0;n<e.length;n++){var o=e[n];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(t,o.key,o)}}return function(e,n,o){return n&&t(e.prototype,n),o&&t(e,o),e}}(),a=function(){function t(e){n(this,t),this.resolveOptions(e),this.initSelection()}return i(t,[{key:"resolveOptions",value:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.action=t.action,this.container=t.container,this.emitter=t.emitter,this.target=t.target,this.text=t.text,this.trigger=t.trigger,this.selectedText=""}},{key:"initSelection",value:function(){this.text?this.selectFake():this.target&&this.selectTarget()}},{key:"selectFake",value:function(){var t=this,e="rtl"==document.documentElement.getAttribute("dir");this.removeFake(),this.fakeHandlerCallback=function(){return t.removeFake()},this.fakeHandler=this.container.addEventListener("click",this.fakeHandlerCallback)||!0,this.fakeElem=document.createElement("textarea"),this.fakeElem.style.fontSize="12pt",this.fakeElem.style.border="0",this.fakeElem.style.padding="0",this.fakeElem.style.margin="0",this.fakeElem.style.position="absolute",this.fakeElem.style[e?"right":"left"]="-9999px";var n=window.pageYOffset||document.documentElement.scrollTop;this.fakeElem.style.top=n+"px",this.fakeElem.setAttribute("readonly",""),this.fakeElem.value=this.text,this.container.appendChild(this.fakeElem),this.selectedText=(0,o.default)(this.fakeElem),this.copyText()}},{key:"removeFake",value:function(){this.fakeHandler&&(this.container.removeEventListener("click",this.fakeHandlerCallback),this.fakeHandler=null,this.fakeHandlerCallback=null),this.fakeElem&&(this.container.removeChild(this.fakeElem),this.fakeElem=null)}},{key:"selectTarget",value:function(){this.selectedText=(0,o.default)(this.target),this.copyText()}},{key:"copyText",value:function(){var t=void 0;try{t=document.execCommand(this.action)}catch(e){t=!1}this.handleResult(t)}},{key:"handleResult",value:function(t){this.emitter.emit(t?"success":"error",{action:this.action,text:this.selectedText,trigger:this.trigger,clearSelection:this.clearSelection.bind(this)})}},{key:"clearSelection",value:function(){this.trigger&&this.trigger.focus(),window.getSelection().removeAllRanges()}},{key:"destroy",value:function(){this.removeFake()}},{key:"action",set:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"copy";if(this._action=t,"copy"!==this._action&&"cut"!==this._action)throw new Error('Invalid "action" value, use either "copy" or "cut"')},get:function(){return this._action}},{key:"target",set:function(t){if(void 0!==t){if(!t||"object"!==(void 0===t?"undefined":r(t))||1!==t.nodeType)throw new Error('Invalid "target" value, use a valid Element');if("copy"===this.action&&t.hasAttribute("disabled"))throw new Error('Invalid "target" attribute. 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diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/holder.min.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/holder.min.js
new file mode 100644
index 000000000..62255af4f
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/holder.min.js
@@ -0,0 +1,13 @@
+/*!
+
+Holder - client side image placeholders
+Version 2.9.4+cabil
+© 2016 Ivan Malopinsky - http://imsky.co
+
+Site:     http://holderjs.com
+Issues:   https://github.com/imsky/holder/issues
+License:  MIT
+
+*/
+!function(e){if(e.document){var t=e.document;t.querySelectorAll||(t.querySelectorAll=function(n){var r,i=t.createElement("style"),o=[];for(t.documentElement.firstChild.appendChild(i),t._qsa=[],i.styleSheet.cssText=n+"{x-qsa:expression(document._qsa && document._qsa.push(this))}",e.scrollBy(0,0),i.parentNode.removeChild(i);t._qsa.length;)r=t._qsa.shift(),r.style.removeAttribute("x-qsa"),o.push(r);return t._qsa=null,o}),t.querySelector||(t.querySelector=function(e){var n=t.querySelectorAll(e);return n.length?n[0]:null}),t.getElementsByClassName||(t.getElementsByClassName=function(e){return e=String(e).replace(/^|\s+/g,"."),t.querySelectorAll(e)}),Object.keys||(Object.keys=function(e){if(e!==Object(e))throw TypeError("Object.keys called on non-object");var t,n=[];for(t in e)Object.prototype.hasOwnProperty.call(e,t)&&n.push(t);return n}),Array.prototype.forEach||(Array.prototype.forEach=function(e){if(void 0===this||null===this)throw TypeError();var 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diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/popper.min.js b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/popper.min.js
new file mode 100644
index 000000000..79ccbf58b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/js/vendor/popper.min.js
@@ -0,0 +1,5 @@
+/*
+ Copyright (C) Federico Zivolo 2018
+ Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).
+ */(function(e,t){'object'==typeof exports&&'undefined'!=typeof module?module.exports=t():'function'==typeof define&&define.amd?define(t):e.Popper=t()})(this,function(){'use strict';function e(e){return e&&'[object Function]'==={}.toString.call(e)}function t(e,t){if(1!==e.nodeType)return[];var o=getComputedStyle(e,null);return t?o[t]:o}function o(e){return'HTML'===e.nodeName?e:e.parentNode||e.host}function n(e){if(!e)return document.body;switch(e.nodeName){case'HTML':case'BODY':return e.ownerDocument.body;case'#document':return e.body;}var i=t(e),r=i.overflow,p=i.overflowX,s=i.overflowY;return /(auto|scroll|overlay)/.test(r+s+p)?e:n(o(e))}function r(e){return 11===e?re:10===e?pe:re||pe}function p(e){if(!e)return document.documentElement;for(var o=r(10)?document.body:null,n=e.offsetParent;n===o&&e.nextElementSibling;)n=(e=e.nextElementSibling).offsetParent;var i=n&&n.nodeName;return 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a=e.offsets.popper,l=e.offsets.reference,f=Z,m='left'===n&&f(a.right)>f(l.left)||'right'===n&&f(a.left)<f(l.right)||'top'===n&&f(a.bottom)>f(l.top)||'bottom'===n&&f(a.top)<f(l.bottom),h=f(a.left)<f(o.left),c=f(a.right)>f(o.right),g=f(a.top)<f(o.top),u=f(a.bottom)>f(o.bottom),b='left'===n&&h||'right'===n&&c||'top'===n&&g||'bottom'===n&&u,y=-1!==['top','bottom'].indexOf(n),w=!!t.flipVariations&&(y&&'start'===r&&h||y&&'end'===r&&c||!y&&'start'===r&&g||!y&&'end'===r&&u);(m||b||w)&&(e.flipped=!0,(m||b)&&(n=p[d+1]),w&&(r=G(r)),e.placement=n+(r?'-'+r:''),e.offsets.popper=le({},e.offsets.popper,C(e.instance.popper,e.offsets.reference,e.placement)),e=P(e.instance.modifiers,e,'flip'))}),e},behavior:'flip',padding:5,boundariesElement:'viewport'},inner:{order:700,enabled:!1,fn:function(e){var t=e.placement,o=t.split('-')[0],n=e.offsets,i=n.popper,r=n.reference,p=-1!==['left','right'].indexOf(o),s=-1===['top','left'].indexOf(o);return i[p?'left':'top']=r[o]-(s?i[p?'width':'height']:0),e.placement=T(t),e.offsets.popper=g(i),e}},hide:{order:800,enabled:!0,fn:function(e){if(!q(e.instance.modifiers,'hide','preventOverflow'))return e;var t=e.offsets.reference,o=D(e.instance.modifiers,function(e){return'preventOverflow'===e.name}).boundaries;if(t.bottom<o.top||t.left>o.right||t.top>o.bottom||t.right<o.left){if(!0===e.hide)return e;e.hide=!0,e.attributes['x-out-of-boundaries']=''}else{if(!1===e.hide)return e;e.hide=!1,e.attributes['x-out-of-boundaries']=!1}return e}},computeStyle:{order:850,enabled:!0,fn:function(e,t){var o=t.x,n=t.y,i=e.offsets.popper,r=D(e.instance.modifiers,function(e){return'applyStyle'===e.name}).gpuAcceleration;void 0!==r&&console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');var s,d,a=void 0===r?t.gpuAcceleration:r,l=p(e.instance.popper),f=u(l),m={position:i.position},h={left:Z(i.left),top:Q(i.top),bottom:Q(i.bottom),right:Z(i.right)},c='bottom'===o?'top':'bottom',g='right'===n?'left':'right',b=B('transform');if(d='bottom'==c?-f.height+h.bottom:h.top,s='right'==g?-f.width+h.right:h.left,a&&b)m[b]='translate3d('+s+'px, '+d+'px, 0)',m[c]=0,m[g]=0,m.willChange='transform';else{var y='bottom'==c?-1:1,w='right'==g?-1:1;m[c]=d*y,m[g]=s*w,m.willChange=c+', '+g}var E={"x-placement":e.placement};return e.attributes=le({},E,e.attributes),e.styles=le({},m,e.styles),e.arrowStyles=le({},e.offsets.arrow,e.arrowStyles),e},gpuAcceleration:!0,x:'bottom',y:'right'},applyStyle:{order:900,enabled:!0,fn:function(e){return j(e.instance.popper,e.styles),K(e.instance.popper,e.attributes),e.arrowElement&&Object.keys(e.arrowStyles).length&&j(e.arrowElement,e.arrowStyles),e},onLoad:function(e,t,o,n,i){var r=L(i,t,e,o.positionFixed),p=O(o.placement,r,t,e,o.modifiers.flip.boundariesElement,o.modifiers.flip.padding);return t.setAttribute('x-placement',p),j(t,{position:o.positionFixed?'fixed':'absolute'}),o},gpuAcceleration:void 0}}},ce});
+//# sourceMappingURL=popper.min.js.map
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_ads.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_ads.scss
new file mode 100644
index 000000000..375a9e01f
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_ads.scss
@@ -0,0 +1,38 @@
+// stylelint-disable declaration-no-important, selector-max-id
+
+//
+// Carbon ads
+//
+
+#carbonads {
+  position: static;
+  display: block;
+  max-width: 400px;
+  padding: 15px 15px 15px 160px;
+  margin: 2rem 0;
+  overflow: hidden;
+  font-size: 13px;
+  line-height: 1.4;
+  text-align: left;
+  background-color: rgba(0, 0, 0, .05);
+
+  a {
+    color: #333;
+    text-decoration: none;
+  }
+
+  @include media-breakpoint-up(sm) {
+    max-width: 330px;
+    border-radius: 4px;
+  }
+}
+
+.carbon-img {
+  float: left;
+  margin-left: -145px;
+}
+
+.carbon-poweredby {
+  display: block;
+  color: #777 !important;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_algolia.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_algolia.scss
new file mode 100644
index 000000000..4014ab973
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_algolia.scss
@@ -0,0 +1,141 @@
+// stylelint-disable declaration-no-important
+
+// Docsearch overrides
+//
+// `!important` indicates overridden properties.
+.algolia-autocomplete {
+  display: block !important;
+  flex: 1;
+
+  // Menu container
+  .ds-dropdown-menu {
+    width: 100%;
+    min-width: 0 !important;
+    max-width: none !important;
+    padding: .75rem 0 !important;
+    background-color: #fff;
+    background-clip: padding-box;
+    border: 1px solid rgba(0, 0, 0, .1);
+    box-shadow: 0 .5rem 1rem rgba(0, 0, 0, .175);
+
+    @include media-breakpoint-up(md) {
+      width: 175%;
+    }
+
+    // Caret
+    &::before {
+      display: none !important;
+    }
+
+    [class^="ds-dataset-"] {
+      padding: 0 !important;
+      overflow: visible !important;
+      background-color: transparent !important;
+      border: 0 !important;
+    }
+
+    .ds-suggestions {
+      margin-top: 0 !important;
+    }
+  }
+
+  .algolia-docsearch-suggestion {
+    padding: 0 !important;
+    overflow: visible !important;
+  }
+
+  .algolia-docsearch-suggestion--category-header {
+    padding: .125rem 1rem !important;
+    margin-top: 0 !important;
+    font-size: .875rem !important;
+    font-weight: 500 !important;
+    color: $bd-purple-bright !important;
+    border-bottom: 0 !important;
+  }
+
+  .algolia-docsearch-suggestion--wrapper {
+    float: none !important;
+    padding-top: 0 !important;
+  }
+
+  // Section header
+  .algolia-docsearch-suggestion--subcategory-column {
+    float: none !important;
+    width: auto !important;
+    padding: 0 !important;
+    text-align: left !important;
+  }
+
+  .algolia-docsearch-suggestion--content {
+    float: none !important;
+    width: auto !important;
+    padding: 0 !important;
+
+    // Vertical divider between column header and content
+    &::before {
+      display: none !important;
+    }
+  }
+
+  .ds-suggestion {
+    &:not(:first-child) {
+      .algolia-docsearch-suggestion--category-header {
+        padding-top: .75rem !important;
+        margin-top: .75rem !important;
+        border-top: 1px solid rgba(0, 0, 0, .1);
+      }
+    }
+
+    .algolia-docsearch-suggestion--subcategory-column {
+      display: none !important;
+    }
+  }
+
+  .algolia-docsearch-suggestion--title {
+    display: block;
+    padding: .25rem 1rem !important;
+    margin-bottom: 0 !important;
+    font-size: .875rem !important;
+    font-weight: 400 !important;
+  }
+
+  .algolia-docsearch-suggestion--text {
+    padding: 0 1rem .5rem !important;
+    margin-top: -.25rem;
+    font-size: .875rem !important;
+    font-weight: 400;
+    line-height: 1.25 !important;
+  }
+
+  .algolia-docsearch-footer {
+    float: none !important;
+    width: auto !important;
+    height: auto !important;
+    padding: .75rem 1rem 0;
+    font-size: .75rem !important;
+    line-height: 1 !important;
+    color: #767676 !important;
+    border-top: 1px solid rgba(0, 0, 0, .1);
+  }
+
+  .algolia-docsearch-footer--logo {
+    display: inline !important;
+    overflow: visible !important;
+    color: inherit !important;
+    text-indent: 0 !important;
+    background: none !important;
+  }
+
+  .algolia-docsearch-suggestion--highlight {
+    color: #5f2dab;
+    background-color: rgba(154, 132, 187, .12);
+  }
+
+  .algolia-docsearch-suggestion--text .algolia-docsearch-suggestion--highlight {
+    box-shadow: inset 0 -2px 0 0 rgba(95, 45, 171, .5) !important;
+  }
+
+  .ds-suggestion.ds-cursor .algolia-docsearch-suggestion--content {
+    background-color: rgba(208, 189, 236, .15) !important;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_anchor.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_anchor.scss
new file mode 100644
index 000000000..2e02390ed
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_anchor.scss
@@ -0,0 +1,10 @@
+.anchorjs-link {
+  font-weight: 400;
+  color: rgba($link-color, .5);
+  transition: color .16s linear;
+
+  &:hover {
+    color: $link-color;
+    text-decoration: none;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_brand.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_brand.scss
new file mode 100644
index 000000000..2d5c5a4cf
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_brand.scss
@@ -0,0 +1,110 @@
+// stylelint-disable no-duplicate-selectors
+
+//
+// Brand guidelines
+//
+
+// Logo series wrapper
+.bd-brand-logos {
+  display: table;
+  width: 100%;
+  margin-bottom: 1rem;
+  overflow: hidden;
+  color: #563d7c;
+  background-color: #f9f9f9;
+  border-radius: .25rem;
+}
+
+// Individual items
+.bd-brand-item {
+  padding: 4rem 0;
+  text-align: center;
+}
+.bd-brand-item + .bd-brand-item {
+  border-top: 1px solid #fff;
+}
+.bd-brand-logos .inverse {
+  color: #fff;
+  background-color: #563d7c;
+}
+
+// Heading content within
+.bd-brand-item h1,
+.bd-brand-item h3 {
+  margin-top: 0;
+  margin-bottom: 0;
+}
+.bd-brand-item .bd-booticon {
+  margin-right: auto;
+  margin-left: auto;
+}
+
+// Make the icons stand out on what is/isn't okay
+// .bd-brand-item .glyphicon {
+//   width: 30px;
+//   height: 30px;
+//   margin: 10px auto -10px;
+//   line-height: 30px;
+//   color: #fff;
+//   border-radius: 50%;
+// }
+// .bd-brand-item .glyphicon-ok {
+//   background-color: #5cb85c;
+// }
+// .bd-brand-item .glyphicon-remove {
+//   background-color: #d9534f;
+// }
+
+@media (min-width: 768px) {
+  .bd-brand-item {
+    display: table-cell;
+    width: 1%;
+  }
+  .bd-brand-item + .bd-brand-item {
+    border-top: 0;
+    border-left: 1px solid #fff;
+  }
+  .bd-brand-item h1 {
+    font-size: 4rem;
+  }
+}
+
+
+//
+// Color swatches
+//
+
+.color-swatches {
+  margin: 0 -5px;
+  overflow: hidden; // clearfix
+}
+
+.color-swatch {
+  float: left;
+  width: 4rem;
+  height: 4rem;
+  margin-right: .25rem;
+  margin-left: .25rem;
+  border-radius: .25rem;
+
+  @media (min-width: 768px) {
+    width: 6rem;
+    height: 6rem;
+  }
+}
+
+// Docs colors
+.color-swatches {
+  .bd-purple {
+    background-color: $bd-purple;
+  }
+  .bd-purple-light {
+    background-color: $bd-purple-light;
+  }
+  .bd-purple-lighter {
+    background-color: #e5e1ea;
+  }
+  .bd-gray {
+    background-color: #f9f9f9;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_browser-bugs.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_browser-bugs.scss
new file mode 100644
index 000000000..f42158b37
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_browser-bugs.scss
@@ -0,0 +1,12 @@
+// Wall of Browser Bugs
+//
+// Better display for the responsive table on the Wall of Browser Bugs.
+
+.bd-browser-bugs {
+  td p {
+    margin-bottom: 0;
+  }
+  th:first-child {
+    width: 18%;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_buttons.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_buttons.scss
new file mode 100644
index 000000000..1e37857fd
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_buttons.scss
@@ -0,0 +1,37 @@
+// Buttons
+//
+// Custom buttons for the docs.
+
+.btn-bd-primary {
+  font-weight: 500;
+  color: $bd-purple-bright;
+  border-color: $bd-purple-bright;
+
+  &:hover,
+  &:active {
+    color: #fff;
+    background-color: $bd-purple-bright;
+    border-color: $bd-purple-bright;
+  }
+
+  &:focus {
+    box-shadow: 0 0 0 3px rgba($bd-purple-bright, .25);
+  }
+}
+
+.btn-bd-download {
+  font-weight: 500;
+  color: $bd-download;
+  border-color: $bd-download;
+
+  &:hover,
+  &:active {
+    color: $bd-dark;
+    background-color: $bd-download;
+    border-color: $bd-download;
+  }
+
+  &:focus {
+    box-shadow: 0 0 0 3px rgba($bd-download, .25);
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_callouts.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_callouts.scss
new file mode 100644
index 000000000..401bfd6f5
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_callouts.scss
@@ -0,0 +1,40 @@
+//
+// Callouts
+//
+
+.bd-callout {
+  padding: 1.25rem;
+  margin-top: 1.25rem;
+  margin-bottom: 1.25rem;
+  border: 1px solid #eee;
+  border-left-width: .25rem;
+  border-radius: .25rem;
+}
+
+.bd-callout h4 {
+  margin-top: 0;
+  margin-bottom: .25rem;
+}
+
+.bd-callout p:last-child {
+  margin-bottom: 0;
+}
+
+.bd-callout code {
+  border-radius: .25rem;
+}
+
+.bd-callout + .bd-callout {
+  margin-top: -.25rem;
+}
+
+// Variations
+@mixin bs-callout-variant($color) {
+  border-left-color: $color;
+
+  h4 { color: $color; }
+}
+
+.bd-callout-info { @include bs-callout-variant($bd-info); }
+.bd-callout-warning { @include bs-callout-variant($bd-warning); }
+.bd-callout-danger { @include bs-callout-variant($bd-danger); }
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_clipboard-js.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_clipboard-js.scss
new file mode 100644
index 000000000..e27d1d4f8
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_clipboard-js.scss
@@ -0,0 +1,39 @@
+// clipboard.js
+//
+// JS-based `Copy` buttons for code snippets.
+
+.bd-clipboard {
+  position: relative;
+  display: none;
+  float: right;
+
+  + .highlight {
+    margin-top: 0;
+  }
+}
+
+.btn-clipboard {
+  position: absolute;
+  top: .5rem;
+  right: .5rem;
+  z-index: 10;
+  display: block;
+  padding: .25rem .5rem;
+  font-size: 75%;
+  color: #818a91;
+  cursor: pointer;
+  background-color: transparent;
+  border: 0;
+  border-radius: .25rem;
+
+  &:hover {
+    color: #fff;
+    background-color: #027de7;
+  }
+}
+
+@media (min-width: 768px) {
+  .bd-clipboard {
+    display: block;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_colors.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_colors.scss
new file mode 100644
index 000000000..8d2825c57
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_colors.scss
@@ -0,0 +1,24 @@
+//
+// Docs color palette classes
+//
+
+@each $color, $value in $colors {
+  .swatch-#{$color} {
+    color: color-yiq($value);
+    background-color: #{$value};
+  }
+}
+
+@each $color, $value in $theme-colors {
+  .swatch-#{$color} {
+    color: color-yiq($value);
+    background-color: #{$value};
+  }
+}
+
+@each $color, $value in $grays {
+  .swatch-#{$color} {
+    color: color-yiq($value);
+    background-color: #{$value};
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_component-examples.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_component-examples.scss
new file mode 100644
index 000000000..5bafcc423
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_component-examples.scss
@@ -0,0 +1,411 @@
+// stylelint-disable no-duplicate-selectors, selector-no-qualifying-type
+
+//
+// Grid examples
+//
+
+.bd-example-row {
+  .row {
+    > .col,
+    > [class^="col-"] {
+      padding-top: .75rem;
+      padding-bottom: .75rem;
+      background-color: rgba(86, 61, 124, .15);
+      border: 1px solid rgba(86, 61, 124, .2);
+    }
+  }
+
+  .row + .row {
+    margin-top: 1rem;
+  }
+
+  .flex-items-top,
+  .flex-items-middle,
+  .flex-items-bottom {
+    min-height: 6rem;
+    background-color: rgba(255, 0, 0, .1);
+  }
+}
+
+.bd-example-row-flex-cols .row {
+  min-height: 10rem;
+  background-color: rgba(255, 0, 0, .1);
+}
+
+.bd-highlight {
+  background-color: rgba($bd-purple, .15);
+  border: 1px solid rgba($bd-purple, .15);
+}
+
+// Grid mixins
+.example-container {
+  width: 800px;
+  @include make-container();
+}
+
+.example-row {
+  @include make-row();
+}
+
+.example-content-main {
+  @include make-col-ready();
+
+  @include media-breakpoint-up(sm) {
+    @include make-col(6);
+  }
+
+  @include media-breakpoint-up(lg) {
+    @include make-col(8);
+  }
+}
+
+.example-content-secondary {
+  @include make-col-ready();
+
+  @include media-breakpoint-up(sm) {
+    @include make-col(6);
+  }
+
+  @include media-breakpoint-up(lg) {
+    @include make-col(4);
+  }
+}
+
+
+//
+// Container illustrations
+//
+
+.bd-example-container {
+  min-width: 16rem;
+  max-width: 25rem;
+  margin-right: auto;
+  margin-left: auto;
+}
+
+.bd-example-container-header {
+  height: 3rem;
+  margin-bottom: .5rem;
+  background-color: lighten($blue, 50%);
+  border-radius: .25rem;
+}
+
+.bd-example-container-sidebar {
+  float: right;
+  width: 4rem;
+  height: 8rem;
+  background-color: lighten($blue, 25%);
+  border-radius: .25rem;
+}
+
+.bd-example-container-body {
+  height: 8rem;
+  margin-right: 4.5rem;
+  background-color: lighten($bd-purple, 25%);
+  border-radius: .25rem;
+}
+
+.bd-example-container-fluid {
+  max-width: none;
+}
+
+
+//
+// Docs examples
+//
+
+.bd-example {
+  position: relative;
+  padding: 1rem;
+  margin: 1rem (-$grid-gutter-width / 2) 0;
+  border: solid $gray-100;
+  border-width: .2rem 0 0;
+  @include clearfix();
+
+  @include media-breakpoint-up(sm) {
+    padding: 1.5rem;
+    margin-right: 0;
+    margin-left: 0;
+    border-width: .2rem;
+  }
+
+  + .highlight,
+  + .clipboard + .highlight {
+    margin-top: 0;
+  }
+
+  + p {
+    margin-top: 2rem;
+  }
+
+  .pos-f-t {
+    position: relative;
+    margin: -1rem;
+
+    @include media-breakpoint-up(sm) {
+      margin: -1.5rem;
+    }
+  }
+
+  .custom-file-input:lang(es) ~ .custom-file-label::after {
+    content: "Elegir";
+  }
+
+  > .form-control {
+    + .form-control {
+      margin-top: .5rem;
+    }
+  }
+
+  > .nav + .nav,
+  > .alert + .alert,
+  > .navbar + .navbar,
+  > .progress + .progress,
+  > .progress + .btn {
+    margin-top: 1rem;
+  }
+
+  > .dropdown-menu:first-child {
+    position: static;
+    display: block;
+  }
+
+  > .form-group:last-child {
+    margin-bottom: 0;
+  }
+
+  > .close {
+    float: none;
+  }
+}
+
+// Typography
+.bd-example-type {
+  .table {
+    .type-info {
+      color: #999;
+      vertical-align: middle;
+    }
+    td {
+      padding: 1rem 0;
+      border-color: #eee;
+    }
+    tr:first-child td {
+      border-top: 0;
+    }
+  }
+
+  h1,
+  h2,
+  h3,
+  h4,
+  h5,
+  h6 {
+    margin-top: 0;
+    margin-bottom: 0;
+  }
+}
+
+// Contextual background colors
+.bd-example-bg-classes p {
+  padding: 1rem;
+}
+
+// Images
+.bd-example > img {
+  + img {
+    margin-left: .5rem;
+  }
+}
+
+// Buttons
+.bd-example {
+  > .btn-group {
+    margin-top: .25rem;
+    margin-bottom: .25rem;
+  }
+  > .btn-toolbar + .btn-toolbar {
+    margin-top: .5rem;
+  }
+}
+
+// Forms
+.bd-example-control-sizing select,
+.bd-example-control-sizing input[type="text"] + input[type="text"] {
+  margin-top: .5rem;
+}
+.bd-example-form .input-group {
+  margin-bottom: .5rem;
+}
+.bd-example > textarea.form-control {
+  resize: vertical;
+}
+
+// List groups
+.bd-example > .list-group {
+  max-width: 400px;
+}
+
+// Navbars
+.bd-example {
+  .fixed-top,
+  .sticky-top {
+    position: static;
+    margin: -1rem -1rem 1rem;
+  }
+  .fixed-bottom {
+    position: static;
+    margin: 1rem -1rem -1rem;
+  }
+
+  @include media-breakpoint-up(sm) {
+    .fixed-top,
+    .sticky-top {
+      margin: -1.5rem -1.5rem 1rem;
+    }
+    .fixed-bottom {
+      margin: 1rem -1.5rem -1.5rem;
+    }
+  }
+}
+
+// Pagination
+.bd-example .pagination {
+  margin-top: .5rem;
+  margin-bottom: .5rem;
+}
+
+// Example modals
+.modal {
+  z-index: 1072;
+
+  .tooltip,
+  .popover {
+    z-index: 1073;
+  }
+}
+
+.modal-backdrop {
+  z-index: 1071;
+}
+
+.bd-example-modal {
+  background-color: #fafafa;
+
+  .modal {
+    position: relative;
+    top: auto;
+    right: auto;
+    bottom: auto;
+    left: auto;
+    z-index: 1;
+    display: block;
+  }
+
+  .modal-dialog {
+    left: auto;
+    margin-right: auto;
+    margin-left: auto;
+  }
+}
+
+// Example tabbable tabs
+.bd-example-tabs .nav-tabs {
+  margin-bottom: 1rem;
+}
+
+// Popovers
+.bd-example-popover-static {
+  padding-bottom: 1.5rem;
+  background-color: #f9f9f9;
+
+  .popover {
+    position: relative;
+    display: block;
+    float: left;
+    width: 260px;
+    margin: 1.25rem;
+  }
+}
+
+// Tooltips
+.tooltip-demo a {
+  white-space: nowrap;
+}
+
+.bd-example-tooltip-static .tooltip {
+  position: relative;
+  display: inline-block;
+  margin: 10px 20px;
+  opacity: 1;
+}
+
+// Scrollspy demo on fixed height div
+.scrollspy-example {
+  position: relative;
+  height: 200px;
+  margin-top: .5rem;
+  overflow: auto;
+}
+
+.scrollspy-example-2 {
+  position: relative;
+  height: 350px;
+  overflow: auto;
+}
+
+.bd-example-border-utils {
+  [class^="border"] {
+    display: inline-block;
+    width: 5rem;
+    height: 5rem;
+    margin: .25rem;
+    background-color: #f5f5f5;
+  }
+}
+
+.bd-example-border-utils-0 {
+  [class^="border"] {
+    border: 1px solid $border-color;
+  }
+}
+
+//
+// Code snippets
+//
+
+.highlight {
+  padding: 1rem;
+  margin-top: 1rem;
+  margin-bottom: 1rem;
+  background-color: $gray-100;
+  -ms-overflow-style: -ms-autohiding-scrollbar;
+
+  @include media-breakpoint-up(sm) {
+    padding: 1.5rem;
+  }
+}
+
+.bd-content .highlight {
+  margin-right: (-$grid-gutter-width / 2);
+  margin-left: (-$grid-gutter-width / 2);
+
+  @include media-breakpoint-up(sm) {
+    margin-right: 0;
+    margin-left: 0;
+  }
+}
+
+.highlight {
+  pre {
+    padding: 0;
+    margin-top: 0;
+    margin-bottom: 0;
+    background-color: transparent;
+    border: 0;
+  }
+  pre code {
+    font-size: inherit;
+    color: $gray-900; // Effectively the base text color
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_content.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_content.scss
new file mode 100644
index 000000000..decb6c4c3
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_content.scss
@@ -0,0 +1,119 @@
+// stylelint-disable no-duplicate-selectors, selector-max-combinators, selector-max-compound-selectors, selector-max-type, selector-no-qualifying-type
+
+//
+// Automatically style Markdown-based tables like a Bootstrap `.table`.
+//
+
+.bd-content {
+  order: 1;
+
+  // Hack the sticky header
+  > h2[id],
+  > h3[id],
+  > h4[id] {
+    pointer-events: none;
+
+    > div,
+    > a {
+      pointer-events: auto;
+    }
+
+    &::before {
+      display: block;
+      height: 6rem;
+      margin-top: -6rem;
+      visibility: hidden;
+      content: "";
+    }
+  }
+
+  > table {
+    width: 100%;
+    max-width: 100%;
+    margin-bottom: 1rem;
+
+    @include media-breakpoint-down(md) {
+      display: block;
+      overflow-x: auto;
+      -ms-overflow-style: -ms-autohiding-scrollbar; // See https://github.com/twbs/bootstrap/pull/10057
+
+      &.table-bordered {
+        border: 0;
+      }
+    }
+
+    // Cells
+    > thead,
+    > tbody,
+    > tfoot {
+      > tr {
+        > th,
+        > td {
+          padding: $table-cell-padding;
+          vertical-align: top;
+          border: 1px solid $table-border-color;
+
+          > p:last-child {
+            margin-bottom: 0;
+          }
+        }
+      }
+    }
+
+    // Prevent breaking of code (e.g., Grunt tasks list)
+    td:first-child > code {
+      white-space: nowrap;
+    }
+  }
+}
+
+//
+// Docs sections
+//
+
+.bd-content {
+  > h2:not(:first-child) {
+    margin-top: 3rem;
+  }
+
+  > h3 {
+    margin-top: 1.5rem;
+  }
+
+  > ul li,
+  > ol li {
+    margin-bottom: .25rem;
+  }
+
+  @include media-breakpoint-up(lg) {
+    > ul,
+    > ol,
+    > p {
+      max-width: 80%;
+    }
+  }
+}
+
+.bd-title {
+  margin-top: 1rem;
+  margin-bottom: .5rem;
+  font-weight: 300;
+
+  @include media-breakpoint-up(sm) {
+    font-size: 3rem;
+  }
+}
+
+.bd-lead {
+  font-size: 1.125rem;
+  font-weight: 300;
+
+  @include media-breakpoint-up(sm) {
+    max-width: 80%;
+    margin-bottom: 1rem;
+    font-size: 1.5rem;
+  }
+}
+
+.bd-text-purple { color: $bd-purple; }
+.bd-text-purple-bright { color: $bd-purple-bright; }
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_examples.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_examples.scss
new file mode 100644
index 000000000..a4ec7a299
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_examples.scss
@@ -0,0 +1,24 @@
+//
+// Examples
+//
+
+.bd-examples .img-thumbnail {
+  margin-bottom: .75rem;
+}
+.bd-examples h4 {
+  margin-bottom: .25rem;
+}
+.bd-examples p {
+  margin-bottom: 1.25rem;
+}
+
+@media (max-width: 480px) {
+  .bd-examples {
+    margin-right: -.75rem;
+    margin-left: -.75rem;
+  }
+  .bd-examples > [class^="col-"] {
+    padding-right: .75rem;
+    padding-left: .75rem;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_footer.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_footer.scss
new file mode 100644
index 000000000..ab605d285
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_footer.scss
@@ -0,0 +1,40 @@
+//
+// Footer
+//
+
+.bd-footer {
+  font-size: 85%;
+  text-align: center;
+  background-color: #f7f7f7;
+
+  a {
+    font-weight: 500;
+    color: $gray-700;
+
+    &:hover,
+    &:focus {
+      color: $link-color;
+    }
+  }
+
+  p {
+    margin-bottom: 0;
+  }
+
+  @include media-breakpoint-up(sm) {
+    text-align: left;
+  }
+}
+
+.bd-footer-links {
+  padding-left: 0;
+  margin-bottom: 1rem;
+
+  li {
+    display: inline-block;
+
+    + li {
+      margin-left: 1rem;
+    }
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_masthead.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_masthead.scss
new file mode 100644
index 000000000..0e3cea069
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_masthead.scss
@@ -0,0 +1,56 @@
+// stylelint-disable declaration-no-important
+
+.bd-masthead {
+  position: relative;
+  padding: 3rem ($grid-gutter-width / 2);
+  // background-image: linear-gradient(45deg, #fafafa, #f5f5f5);
+
+  h1 {
+    line-height: 1;
+  }
+
+  .btn {
+    width: 100%;
+    padding: .8rem 2rem;
+    font-size: 1.25rem;
+    font-weight: 500;
+  }
+
+  .carbonad {
+    margin-top: 0 !important;
+    margin-bottom: -3rem !important;
+  }
+
+  @include media-breakpoint-up(sm) {
+    padding-top: 5rem;
+    padding-bottom: 5rem;
+
+    .carbonad {
+      margin-bottom: 0 !important;
+    }
+  }
+
+  @include media-breakpoint-up(md) {
+    h1 {
+      font-size: 4rem;
+    }
+
+    .carbonad {
+      margin-top: 3rem !important;
+    }
+  }
+}
+
+.half-rule {
+  width: 6rem;
+  margin: 2.5rem 0;
+}
+
+.masthead-followup {
+  .bd-clipboard { display: none; }
+
+  .highlight {
+    padding: .5rem 0;
+    background-color: transparent;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_nav.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_nav.scss
new file mode 100644
index 000000000..73c6bad64
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_nav.scss
@@ -0,0 +1,76 @@
+//
+// Main navbar
+//
+
+.bd-navbar {
+  min-height: 4rem;
+  background-color: $bd-purple;
+  box-shadow: 0 .5rem 1rem rgba(0, 0, 0, .05), inset 0 -1px 0 rgba(0, 0, 0, .1);
+
+  @include media-breakpoint-down(md) {
+    padding-right: .5rem;
+    padding-left: .5rem;
+
+    .navbar-nav-scroll {
+      max-width: 100%;
+      height: 2.5rem;
+      margin-top: .25rem;
+      overflow: hidden;
+      font-size: .875rem;
+
+      .navbar-nav {
+        padding-bottom: 2rem;
+        overflow-x: auto;
+        white-space: nowrap;
+        -webkit-overflow-scrolling: touch;
+      }
+    }
+  }
+
+  @include media-breakpoint-up(md) {
+    @supports (position: sticky) {
+      position: sticky;
+      top: 0;
+      z-index: 1071; // over everything in bootstrap
+    }
+  }
+
+  .navbar-nav {
+    .nav-link {
+      padding-right: .5rem;
+      padding-left: .5rem;
+      color: $bd-purple-light;
+
+      &.active,
+      &:hover {
+        color: #fff;
+        background-color: transparent;
+      }
+
+      &.active {
+        font-weight: 500;
+      }
+    }
+  }
+
+  .navbar-nav-svg {
+    display: inline-block;
+    width: 1rem;
+    height: 1rem;
+    vertical-align: text-top;
+  }
+
+  .dropdown-menu {
+    font-size: .875rem;
+  }
+
+  .dropdown-item.active {
+    font-weight: 500;
+    color: $gray-900;
+    background-color: transparent;
+    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath fill='%23292b2c' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3E%3C/svg%3E");
+    background-repeat: no-repeat;
+    background-position: .4rem .6rem;
+    background-size: .75rem .75rem;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_sidebar.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_sidebar.scss
new file mode 100644
index 000000000..0cfbd60d2
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_sidebar.scss
@@ -0,0 +1,166 @@
+// stylelint-disable declaration-no-important
+
+//
+// Right side table of contents
+//
+
+.bd-toc {
+  @supports (position: sticky) {
+    position: sticky;
+    top: 4rem;
+    height: calc(100vh - 4rem);
+    overflow-y: auto;
+  }
+  order: 2;
+  padding-top: 1.5rem;
+  padding-bottom: 1.5rem;
+  font-size: .875rem;
+}
+
+.section-nav {
+  padding-left: 0;
+  border-left: 1px solid #eee;
+
+  ul {
+    padding-left: 1rem;
+
+    ul {
+      display: none;
+    }
+  }
+}
+
+.toc-entry {
+  display: block;
+
+  a {
+    display: block;
+    padding: .125rem 1.5rem;
+    color: #99979c;
+
+    &:hover {
+      color: $blue;
+      text-decoration: none;
+    }
+  }
+}
+
+//
+// Left side navigation
+//
+
+.bd-sidebar {
+  order: 0;
+  // background-color: #f5f2f9;
+  border-bottom: 1px solid rgba(0, 0, 0, .1);
+
+  @include media-breakpoint-up(md) {
+    @supports (position: sticky) {
+      position: sticky;
+      top: 4rem;
+      z-index: 1000;
+      height: calc(100vh - 4rem);
+    }
+    border-right: 1px solid rgba(0, 0, 0, .1);
+  }
+
+  @include media-breakpoint-up(xl) {
+    flex: 0 1 320px;
+  }
+}
+
+.bd-links {
+  padding-top: 1rem;
+  padding-bottom: 1rem;
+  margin-right: -15px;
+  margin-left: -15px;
+
+  @include media-breakpoint-up(md) {
+    @supports (position: sticky) {
+      max-height: calc(100vh - 9rem);
+      overflow-y: auto;
+    }
+  }
+
+  // Override collapse behaviors
+  @include media-breakpoint-up(md) {
+    display: block !important;
+  }
+}
+
+.bd-search {
+  position: relative; // To contain the Algolia search
+  padding: 1rem 15px;
+  margin-right: -15px;
+  margin-left: -15px;
+  border-bottom: 1px solid rgba(0, 0, 0, .05);
+
+  .form-control:focus {
+    border-color: $bd-purple-bright;
+    box-shadow: 0 0 0 3px rgba($bd-purple-bright, .25);
+  }
+}
+
+.bd-search-docs-toggle {
+  line-height: 1;
+  color: $gray-900;
+}
+
+.bd-sidenav {
+  display: none;
+}
+
+.bd-toc-link {
+  display: block;
+  padding: .25rem 1.5rem;
+  font-weight: 500;
+  color: rgba(0, 0, 0, .65);
+
+  &:hover {
+    color: rgba(0, 0, 0, .85);
+    text-decoration: none;
+  }
+}
+
+.bd-toc-item {
+  &.active {
+    margin-bottom: 1rem;
+
+    &:not(:first-child) {
+      margin-top: 1rem;
+    }
+
+    > .bd-toc-link {
+      color: rgba(0, 0, 0, .85);
+
+      &:hover {
+        background-color: transparent;
+      }
+    }
+
+    > .bd-sidenav {
+      display: block;
+    }
+  }
+}
+
+// All levels of nav
+.bd-sidebar .nav > li > a {
+  display: block;
+  padding: .25rem 1.5rem;
+  font-size: 90%;
+  color: rgba(0, 0, 0, .65);
+}
+
+.bd-sidebar .nav > li > a:hover {
+  color: rgba(0, 0, 0, .85);
+  text-decoration: none;
+  background-color: transparent;
+}
+
+.bd-sidebar .nav > .active > a,
+.bd-sidebar .nav > .active:hover > a {
+  font-weight: 500;
+  color: rgba(0, 0, 0, .85);
+  background-color: transparent;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_skiplink.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_skiplink.scss
new file mode 100644
index 000000000..7ca3074a8
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_skiplink.scss
@@ -0,0 +1,14 @@
+// stylelint-disable selector-max-id
+
+#skippy {
+  display: block;
+  padding: 1em;
+  color: #fff;
+  background-color: $bd-purple;
+  outline: 0;
+
+  .skiplink-text {
+    padding: .5em;
+    outline: 1px dotted;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_syntax.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_syntax.scss
new file mode 100644
index 000000000..e66c5da22
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_syntax.scss
@@ -0,0 +1,78 @@
+// stylelint-disable declaration-block-single-line-max-declarations
+
+.hll { background-color: #ffc; }
+.c { color: #999; }
+.k { color: #069; }
+.o { color: #555; }
+.cm { color: #999; }
+.cp { color: #099; }
+.c1 { color: #999; }
+.cs { color: #999; }
+.gd { background-color: #fcc; border: 1px solid #c00; }
+.ge { font-style: italic; }
+.gr { color: #f00; }
+.gh { color: #030; }
+.gi { background-color: #cfc; border: 1px solid #0c0; }
+.go { color: #aaa; }
+.gp { color: #009; }
+.gu { color: #030; }
+.gt { color: #9c6; }
+.kc { color: #069; }
+.kd { color: #069; }
+.kn { color: #069; }
+.kp { color: #069; }
+.kr { color: #069; }
+.kt { color: #078; }
+.m { color: #f60; }
+.s { color: #d44950; }
+.na { color: #4f9fcf; }
+.nb { color: #366; }
+.nc { color: #0a8; }
+.no { color: #360; }
+.nd { color: #99f; }
+.ni { color: #999; }
+.ne { color: #c00; }
+.nf { color: #c0f; }
+.nl { color: #99f; }
+.nn { color: #0cf; }
+.nt { color: #2f6f9f; }
+.nv { color: #033; }
+.ow { color: #000; }
+.w { color: #bbb; }
+.mf { color: #f60; }
+.mh { color: #f60; }
+.mi { color: #f60; }
+.mo { color: #f60; }
+.sb { color: #c30; }
+.sc { color: #c30; }
+.sd { font-style: italic; color: #c30; }
+.s2 { color: #c30; }
+.se { color: #c30; }
+.sh { color: #c30; }
+.si { color: #a00; }
+.sx { color: #c30; }
+.sr { color: #3aa; }
+.s1 { color: #c30; }
+.ss { color: #fc3; }
+.bp { color: #366; }
+.vc { color: #033; }
+.vg { color: #033; }
+.vi { color: #033; }
+.il { color: #f60; }
+
+.css .o,
+.css .o + .nt,
+.css .nt + .nt { color: #999; }
+
+.language-bash::before,
+.language-sh::before {
+  color: #009;
+  content: "$ ";
+  user-select: none;
+}
+
+.language-powershell::before {
+  color: #009;
+  content: "PM> ";
+  user-select: none;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_variables.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_variables.scss
new file mode 100644
index 000000000..b60a21368
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/_variables.scss
@@ -0,0 +1,9 @@
+// Local docs variables
+$bd-purple:        #563d7c !default;
+$bd-purple-bright: lighten(saturate($bd-purple, 5%), 15%) !default;
+$bd-purple-light:  lighten(saturate($bd-purple, 5%), 45%) !default;
+$bd-dark:          #2a2730 !default;
+$bd-download:      #ffe484 !default;
+$bd-info:          #5bc0de !default;
+$bd-warning:       #f0ad4e !default;
+$bd-danger:        #d9534f !default;
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/docs.scss b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/docs.scss
new file mode 100644
index 000000000..706bde44e
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/assets/scss/docs.scss
@@ -0,0 +1,52 @@
+/*!
+ * Bootstrap Docs (https://getbootstrap.com/)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under the Creative Commons Attribution 3.0 Unported License. For
+ * details, see https://creativecommons.org/licenses/by/3.0/.
+ */
+
+// Dev notes
+//
+// Background information on nomenclature and architecture decisions here.
+//
+// - Bootstrap functions, variables, and mixins are included for easy reuse.
+//   Doing so gives us access to the same core utilities provided by Bootstrap.
+//   For example, consistent media queries through those mixins.
+//
+// - Bootstrap's **docs variables** are prefixed with `$bd-`.
+//   These custom colors avoid collision with the components Bootstrap provides.
+//
+// - Classes are prefixed with `.bd-`.
+//   These classes indicate custom-built or modified components for the design
+//   and layout of the Bootstrap docs. They are not included in our builds.
+//
+// Happy Bootstrapping!
+
+// Load Bootstrap variables and mixins
+@import "../../../../../scss/functions";
+@import "../../../../../scss/variables";
+@import "../../../../../scss/mixins";
+
+// Load docs components
+@import "variables";
+@import "nav";
+@import "masthead";
+@import "ads";
+@import "content";
+@import "skiplink";
+@import "sidebar";
+@import "footer";
+@import "component-examples";
+@import "buttons";
+@import "callouts";
+@import "examples";
+@import "browser-bugs";
+@import "brand";
+@import "colors";
+@import "clipboard-js";
+
+// Load docs dependencies
+@import "syntax";
+@import "anchor";
+@import "algolia";
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/browser-bugs.md b/vendor/twbs/bootstrap/site/docs/4.1/browser-bugs.md
new file mode 100644
index 000000000..2340f90c2
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/browser-bugs.md
@@ -0,0 +1,64 @@
+---
+layout: docs
+title: Wall of browser bugs
+group: browser-bugs
+---
+
+Bootstrap currently works around several outstanding browser bugs in major browsers to deliver the best cross-browser experience possible. Some bugs, like those listed below, cannot be solved by us.
+
+We publicly list browser bugs that are impacting us here, in the hopes of expediting the process of fixing them. For information on Bootstrap's browser compatibility, [see our browser compatibility docs]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/browsers-devices/#supported-browsers).
+
+See also:
+
+* [Chromium issue 536263: [meta] Issues affecting Bootstrap](https://bugs.chromium.org/p/chromium/issues/detail?id=536263)
+* [Mozilla bug 1230801: Fix the issues that affect Bootstrap](https://bugzilla.mozilla.org/show_bug.cgi?id=1230801)
+* [WebKit bug 159753: [meta] Issues affecting Bootstrap](https://bugs.webkit.org/show_bug.cgi?id=159753)
+* [jQuery's browser bug workarounds](https://docs.google.com/document/d/1LPaPA30bLUB_publLIMF0RlhdnPx_ePXm7oW02iiT6o)
+
+<table class="bd-browser-bugs table table-bordered table-hover">
+  <thead>
+    <tr>
+      <th>Browser(s)</th>
+      <th>Summary of bug</th>
+      <th>Upstream bug(s)</th>
+      <th>Bootstrap issue(s)</th>
+    </tr>
+  </thead>
+  <tbody>
+    {% for bug in site.data.browser-bugs %}
+    <tr>
+      <td>{{ bug.browser }}</td>
+      <td>{{ bug.summary | markdownify }}</td>
+      <td>{% include bugify.html content=bug.upstream_bug %}</td>
+      <td>{% include bugify.html content=bug.origin %}</td>
+    </tr>
+    {% endfor %}
+  </tbody>
+</table>
+
+# Most wanted features
+
+There are several features specified in Web standards which would allow us to make Bootstrap more robust, elegant, or performant, but aren't yet implemented in certain browsers, thus preventing us from taking advantage of them.
+
+We publicly list these "most wanted" feature requests here, in the hopes of expediting the process of getting them implemented.
+
+<table class="bd-browser-bugs table table-bordered table-hover">
+  <thead>
+    <tr>
+      <th>Browser(s)</th>
+      <th>Summary of feature</th>
+      <th>Upstream issue(s)</th>
+      <th>Bootstrap issue(s)</th>
+    </tr>
+  </thead>
+  <tbody>
+    {% for feat in site.data.browser-features %}
+    <tr>
+      <td>{{ feat.browser }}</td>
+      <td>{{ feat.summary | markdownify }}</td>
+      <td>{% include bugify.html content=feat.upstream_bug %}</td>
+      <td>{% include bugify.html content=feat.origin %}</td>
+    </tr>
+    {% endfor %}
+  </tbody>
+</table>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/alerts.md b/vendor/twbs/bootstrap/site/docs/4.1/components/alerts.md
new file mode 100644
index 000000000..6c6cb9936
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/alerts.md
@@ -0,0 +1,115 @@
+---
+layout: docs
+title: Alerts
+description: Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages.
+group: components
+toc: true
+---
+
+## Examples
+
+Alerts are available for any length of text, as well as an optional dismiss button. For proper styling, use one of the eight **required** contextual classes (e.g., `.alert-success`). For inline dismissal, use the [alerts jQuery plugin](#dismissing).
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<div class="alert alert-{{ color.name }}" role="alert">
+  A simple {{ color.name }} alert—check it out!
+</div>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+{% include callout-warning-color-assistive-technologies.md %}
+
+### Link color
+
+Use the `.alert-link` utility class to quickly provide matching colored links within any alert.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<div class="alert alert-{{ color.name }}" role="alert">
+  A simple {{ color.name }} alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
+</div>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+### Additional content
+
+Alerts can also contain additional HTML elements like headings, paragraphs and dividers.
+
+{% capture example %}
+<div class="alert alert-success" role="alert">
+  <h4 class="alert-heading">Well done!</h4>
+  <p>Aww yeah, you successfully read this important alert message. This example text is going to run a bit longer so that you can see how spacing within an alert works with this kind of content.</p>
+  <hr>
+  <p class="mb-0">Whenever you need to, be sure to use margin utilities to keep things nice and tidy.</p>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+
+### Dismissing
+
+Using the alert JavaScript plugin, it's possible to dismiss any alert inline. Here's how:
+
+- Be sure you've loaded the alert plugin, or the compiled Bootstrap JavaScript.
+- If you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util). The compiled version includes this.
+- Add a dismiss button and the `.alert-dismissible` class, which adds extra padding to the right of the alert and positions the `.close` button.
+- On the dismiss button, add the `data-dismiss="alert"` attribute, which triggers the JavaScript functionality. Be sure to use the `<button>` element with it for proper behavior across all devices.
+- To animate alerts when dismissing them, be sure to add the `.fade` and `.show` classes.
+
+You can see this in action with a live demo:
+
+{% capture example %}
+<div class="alert alert-warning alert-dismissible fade show" role="alert">
+  <strong>Holy guacamole!</strong> You should check in on some of those fields below.
+  <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+    <span aria-hidden="true">&times;</span>
+  </button>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## JavaScript behavior
+
+### Triggers
+
+Enable dismissal of an alert via JavaScript:
+
+{% highlight js %}
+$('.alert').alert()
+{% endhighlight %}
+
+Or with `data` attributes on a button **within the alert**, as demonstrated above:
+
+{% highlight html %}
+<button type="button" class="close" data-dismiss="alert" aria-label="Close">
+  <span aria-hidden="true">&times;</span>
+</button>
+{% endhighlight %}
+
+Note that closing an alert will remove it from the DOM.
+
+### Methods
+
+| Method | Description |
+| --- | --- |
+| `$().alert()` | Makes an alert listen for click events on descendant elements which have the `data-dismiss="alert"` attribute. (Not necessary when using the data-api's auto-initialization.) |
+| `$().alert('close')` | Closes an alert by removing it from the DOM. If the `.fade` and `.show` classes are present on the element, the alert will fade out before it is removed. |
+| `$().alert('dispose')` | Destroys an element's alert. |
+
+{% highlight js %}$(".alert").alert('close'){% endhighlight %}
+
+### Events
+
+Bootstrap's alert plugin exposes a few events for hooking into alert functionality.
+
+| Event | Description |
+| --- | --- |
+| `close.bs.alert` | This event fires immediately when the <code>close</code> instance method is called. |
+| `closed.bs.alert` | This event is fired when the alert has been closed (will wait for CSS transitions to complete). |
+
+{% highlight js %}
+$('#myAlert').on('closed.bs.alert', function () {
+  // do something…
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/badge.md b/vendor/twbs/bootstrap/site/docs/4.1/components/badge.md
new file mode 100644
index 000000000..0e97cbe76
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/badge.md
@@ -0,0 +1,82 @@
+---
+layout: docs
+title: Badges
+description: Documentation and examples for badges, our small count and labeling component.
+group: components
+toc: true
+---
+
+## Example
+
+Badges scale to match the size of the immediate parent element by using relative font sizing and `em` units.
+
+<div class="bd-example">
+<div class="h1">Example heading <span class="badge badge-secondary">New</span></div>
+<div class="h2">Example heading <span class="badge badge-secondary">New</span></div>
+<div class="h3">Example heading <span class="badge badge-secondary">New</span></div>
+<div class="h4">Example heading <span class="badge badge-secondary">New</span></div>
+<div class="h5">Example heading <span class="badge badge-secondary">New</span></div>
+<div class="h6">Example heading <span class="badge badge-secondary">New</span></div>
+</div>
+
+{% highlight html %}
+<h1>Example heading <span class="badge badge-secondary">New</span></h1>
+<h2>Example heading <span class="badge badge-secondary">New</span></h2>
+<h3>Example heading <span class="badge badge-secondary">New</span></h3>
+<h4>Example heading <span class="badge badge-secondary">New</span></h4>
+<h5>Example heading <span class="badge badge-secondary">New</span></h5>
+<h6>Example heading <span class="badge badge-secondary">New</span></h6>
+{% endhighlight %}
+
+Badges can be used as part of links or buttons to provide a counter.
+
+{% capture example %}
+<button type="button" class="btn btn-primary">
+  Notifications <span class="badge badge-light">4</span>
+</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+Note that depending on how they are used, badges may be confusing for users of screen readers and similar assistive technologies. While the styling of badges provides a visual cue as to their purpose, these users will simply be presented with the content of the badge. Depending on the specific situation, these badges may seem like random additional words or numbers at the end of a sentence, link, or button.
+
+Unless the context is clear (as with the "Notifications" example, where it is understood that the "4" is the number of notifications), consider including additional context with a visually hidden piece of additional text.
+
+{% capture example %}
+<button type="button" class="btn btn-primary">
+  Profile <span class="badge badge-light">9</span>
+  <span class="sr-only">unread messages</span>
+</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Contextual variations
+
+Add any of the below mentioned modifier classes to change the appearance of a badge.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<span class="badge badge-{{ color.name }}">{{ color.name | capitalize }}</span>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+{% include callout-warning-color-assistive-technologies.md %}
+
+## Pill badges
+
+Use the `.badge-pill` modifier class to make badges more rounded (with a larger `border-radius` and additional horizontal `padding`). Useful if you miss the badges from v3.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<span class="badge badge-pill badge-{{ color.name }}">{{ color.name | capitalize }}</span>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+## Links
+
+Using the contextual `.badge-*` classes on an `<a>` element quickly provide _actionable_ badges with hover and focus states.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<a href="#" class="badge badge-{{ color.name }}">{{ color.name | capitalize }}</a>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/breadcrumb.md b/vendor/twbs/bootstrap/site/docs/4.1/components/breadcrumb.md
new file mode 100644
index 000000000..4cc7b3de9
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/breadcrumb.md
@@ -0,0 +1,58 @@
+---
+layout: docs
+title: Breadcrumb
+description: Indicate the current page's location within a navigational hierarchy that automatically adds separators via CSS.
+group: components
+---
+
+## Example
+
+{% capture example %}
+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item active" aria-current="page">Home</li>
+  </ol>
+</nav>
+
+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item"><a href="#">Home</a></li>
+    <li class="breadcrumb-item active" aria-current="page">Library</li>
+  </ol>
+</nav>
+
+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item"><a href="#">Home</a></li>
+    <li class="breadcrumb-item"><a href="#">Library</a></li>
+    <li class="breadcrumb-item active" aria-current="page">Data</li>
+  </ol>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Changing the separator
+
+Separators are automatically added in CSS through [`::before`](https://developer.mozilla.org/en-US/docs/Web/CSS/::before) and [`content`](https://developer.mozilla.org/en-US/docs/Web/CSS/content). They can be changed by changing `$breadcrumb-divider`. The [quote](https://sass-lang.com/documentation/Sass/Script/Functions.html#quote-instance_method) function is needed to generate the quotes around a string, so if you want `>` as seperator, you can use this:
+
+```scss
+$breadcrumb-divider: quote(">");
+```
+
+It's also possible to use a **base64 embedded SVG icon**:
+
+```scss
+$breadcrumb-divider: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI4IiBoZWlnaHQ9IjgiPjxwYXRoIGQ9Ik0yLjUgMEwxIDEuNSAzLjUgNCAxIDYuNSAyLjUgOGw0LTQtNC00eiIgZmlsbD0iY3VycmVudENvbG9yIi8+PC9zdmc+);
+```
+
+The separator can be removed by setting `$breadcrumb-divider` to `none`:
+
+```scss
+$breadcrumb-divider: none;
+```
+
+## Accessibility
+
+Since breadcrumbs provide a navigation, it's a good idea to add a meaningful label such as `aria-label="breadcrumb"` to describe the type of navigation provided in the `<nav>` element, as well as applying an `aria-current="page"` to the last item of the set to indicate that it represents the current page.
+
+For more information, see the [WAI-ARIA Authoring Practices for the breadcrumb pattern](https://www.w3.org/TR/wai-aria-practices/#breadcrumb).
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/button-group.md b/vendor/twbs/bootstrap/site/docs/4.1/components/button-group.md
new file mode 100644
index 000000000..2261a5e72
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/button-group.md
@@ -0,0 +1,207 @@
+---
+layout: docs
+title: Button group
+description: Group a series of buttons together on a single line with the button group, and super-power them with JavaScript.
+group: components
+toc: true
+---
+
+## Basic example
+
+Wrap a series of buttons with `.btn` in `.btn-group`. Add on optional JavaScript radio and checkbox style behavior with [our buttons plugin]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/buttons/#button-plugin).
+
+{% capture example %}
+<div class="btn-group" role="group" aria-label="Basic example">
+  <button type="button" class="btn btn-secondary">Left</button>
+  <button type="button" class="btn btn-secondary">Middle</button>
+  <button type="button" class="btn btn-secondary">Right</button>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture callout %}
+##### Ensure correct `role` and provide a label
+
+In order for assistive technologies (such as screen readers) to convey that a series of buttons is grouped, an appropriate `role` attribute needs to be provided. For button groups, this would be `role="group"`, while toolbars should have a `role="toolbar"`.
+
+In addition, groups and toolbars should be given an explicit label, as most assistive technologies will otherwise not announce them, despite the presence of the correct role attribute. In the examples provided here, we use `aria-label`, but alternatives such as `aria-labelledby` can also be used.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+## Button toolbar
+
+Combine sets of button groups into button toolbars for more complex components. Use utility classes as needed to space out groups, buttons, and more.
+
+{% capture example %}
+<div class="btn-toolbar" role="toolbar" aria-label="Toolbar with button groups">
+  <div class="btn-group mr-2" role="group" aria-label="First group">
+    <button type="button" class="btn btn-secondary">1</button>
+    <button type="button" class="btn btn-secondary">2</button>
+    <button type="button" class="btn btn-secondary">3</button>
+    <button type="button" class="btn btn-secondary">4</button>
+  </div>
+  <div class="btn-group mr-2" role="group" aria-label="Second group">
+    <button type="button" class="btn btn-secondary">5</button>
+    <button type="button" class="btn btn-secondary">6</button>
+    <button type="button" class="btn btn-secondary">7</button>
+  </div>
+  <div class="btn-group" role="group" aria-label="Third group">
+    <button type="button" class="btn btn-secondary">8</button>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Feel free to mix input groups with button groups in your toolbars. Similar to the example above, you'll likely need some utilities though to space things properly.
+
+{% capture example %}
+<div class="btn-toolbar mb-3" role="toolbar" aria-label="Toolbar with button groups">
+  <div class="btn-group mr-2" role="group" aria-label="First group">
+    <button type="button" class="btn btn-secondary">1</button>
+    <button type="button" class="btn btn-secondary">2</button>
+    <button type="button" class="btn btn-secondary">3</button>
+    <button type="button" class="btn btn-secondary">4</button>
+  </div>
+  <div class="input-group">
+    <div class="input-group-prepend">
+      <div class="input-group-text" id="btnGroupAddon">@</div>
+    </div>
+    <input type="text" class="form-control" placeholder="Input group example" aria-label="Input group example" aria-describedby="btnGroupAddon">
+  </div>
+</div>
+
+<div class="btn-toolbar justify-content-between" role="toolbar" aria-label="Toolbar with button groups">
+  <div class="btn-group" role="group" aria-label="First group">
+    <button type="button" class="btn btn-secondary">1</button>
+    <button type="button" class="btn btn-secondary">2</button>
+    <button type="button" class="btn btn-secondary">3</button>
+    <button type="button" class="btn btn-secondary">4</button>
+  </div>
+  <div class="input-group">
+    <div class="input-group-prepend">
+      <div class="input-group-text" id="btnGroupAddon2">@</div>
+    </div>
+    <input type="text" class="form-control" placeholder="Input group example" aria-label="Input group example" aria-describedby="btnGroupAddon2">
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Sizing
+
+Instead of applying button sizing classes to every button in a group, just add `.btn-group-*` to each `.btn-group`, including each one when nesting multiple groups.
+
+<div class="bd-example">
+  <div class="btn-group btn-group-lg" role="group" aria-label="Large button group">
+    <button type="button" class="btn btn-secondary">Left</button>
+    <button type="button" class="btn btn-secondary">Middle</button>
+    <button type="button" class="btn btn-secondary">Right</button>
+  </div>
+  <br>
+  <div class="btn-group" role="group" aria-label="Default button group">
+    <button type="button" class="btn btn-secondary">Left</button>
+    <button type="button" class="btn btn-secondary">Middle</button>
+    <button type="button" class="btn btn-secondary">Right</button>
+  </div>
+  <br>
+  <div class="btn-group btn-group-sm" role="group" aria-label="Small button group">
+    <button type="button" class="btn btn-secondary">Left</button>
+    <button type="button" class="btn btn-secondary">Middle</button>
+    <button type="button" class="btn btn-secondary">Right</button>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="btn-group btn-group-lg" role="group" aria-label="...">...</div>
+<div class="btn-group" role="group" aria-label="...">...</div>
+<div class="btn-group btn-group-sm" role="group" aria-label="...">...</div>
+{% endhighlight %}
+
+## Nesting
+
+Place a `.btn-group` within another `.btn-group` when you want dropdown menus mixed with a series of buttons.
+
+{% capture example %}
+<div class="btn-group" role="group" aria-label="Button group with nested dropdown">
+  <button type="button" class="btn btn-secondary">1</button>
+  <button type="button" class="btn btn-secondary">2</button>
+
+  <div class="btn-group" role="group">
+    <button id="btnGroupDrop1" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      Dropdown
+    </button>
+    <div class="dropdown-menu" aria-labelledby="btnGroupDrop1">
+      <a class="dropdown-item" href="#">Dropdown link</a>
+      <a class="dropdown-item" href="#">Dropdown link</a>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Vertical variation
+
+Make a set of buttons appear vertically stacked rather than horizontally. **Split button dropdowns are not supported here.**
+
+<div class="bd-example">
+  <div class="btn-group-vertical" role="group" aria-label="Vertical button group">
+    <button type="button" class="btn btn-secondary">Button</button>
+    <button type="button" class="btn btn-secondary">Button</button>
+    <button type="button" class="btn btn-secondary">Button</button>
+    <button type="button" class="btn btn-secondary">Button</button>
+    <button type="button" class="btn btn-secondary">Button</button>
+    <button type="button" class="btn btn-secondary">Button</button>
+  </div>
+</div>
+
+
+<div class="bd-example">
+  <div class="btn-group-vertical" role="group" aria-label="Vertical button group">
+    <button type="button" class="btn btn-secondary">Button</button>
+    <button type="button" class="btn btn-secondary">Button</button>
+    <div class="btn-group" role="group">
+      <button id="btnGroupVerticalDrop1" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        Dropdown
+      </button>
+      <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop1">
+        <a class="dropdown-item" href="#">Dropdown link</a>
+        <a class="dropdown-item" href="#">Dropdown link</a>
+      </div>
+    </div>
+    <button type="button" class="btn btn-secondary">Button</button>
+    <button type="button" class="btn btn-secondary">Button</button>
+    <div class="btn-group" role="group">
+      <button id="btnGroupVerticalDrop2" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        Dropdown
+      </button>
+      <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop2">
+        <a class="dropdown-item" href="#">Dropdown link</a>
+        <a class="dropdown-item" href="#">Dropdown link</a>
+      </div>
+    </div>
+    <div class="btn-group" role="group">
+      <button id="btnGroupVerticalDrop3" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        Dropdown
+      </button>
+      <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop3">
+        <a class="dropdown-item" href="#">Dropdown link</a>
+        <a class="dropdown-item" href="#">Dropdown link</a>
+      </div>
+    </div>
+    <div class="btn-group" role="group">
+      <button id="btnGroupVerticalDrop4" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        Dropdown
+      </button>
+      <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop4">
+        <a class="dropdown-item" href="#">Dropdown link</a>
+        <a class="dropdown-item" href="#">Dropdown link</a>
+      </div>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="btn-group-vertical">
+  ...
+</div>
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/buttons.md b/vendor/twbs/bootstrap/site/docs/4.1/components/buttons.md
new file mode 100644
index 000000000..f999fd552
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/buttons.md
@@ -0,0 +1,164 @@
+---
+layout: docs
+title: Buttons
+description: Use Bootstrap's custom button styles for actions in forms, dialogs, and more with support for multiple sizes, states, and more.
+group: components
+redirect_from: "/docs/4.1/components/"
+toc: true
+---
+
+## Examples
+
+Bootstrap includes several predefined button styles, each serving its own semantic purpose, with a few extras thrown in for more control.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<button type="button" class="btn btn-{{ color.name }}">{{ color.name | capitalize }}</button>{% endfor %}
+
+<button type="button" class="btn btn-link">Link</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% include callout-warning-color-assistive-technologies.md %}
+
+## Button tags
+
+The `.btn` classes are designed to be used with the `<button>` element. However, you can also use these classes on `<a>` or `<input>` elements (though some browsers may apply a slightly different rendering).
+
+When using button classes on `<a>` elements that are used to trigger in-page functionality (like collapsing content), rather than linking to new pages or sections within the current page, these links should be given a `role="button"` to appropriately convey their purpose to assistive technologies such as screen readers.
+
+{% capture example %}
+<a class="btn btn-primary" href="#" role="button">Link</a>
+<button class="btn btn-primary" type="submit">Button</button>
+<input class="btn btn-primary" type="button" value="Input">
+<input class="btn btn-primary" type="submit" value="Submit">
+<input class="btn btn-primary" type="reset" value="Reset">
+{% endcapture %}
+{% include example.html content=example %}
+
+## Outline buttons
+
+In need of a button, but not the hefty background colors they bring? Replace the default modifier classes with the `.btn-outline-*` ones to remove all background images and colors on any button.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<button type="button" class="btn btn-outline-{{ color.name }}">{{ color.name | capitalize }}</button>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+## Sizes
+
+Fancy larger or smaller buttons? Add `.btn-lg` or `.btn-sm` for additional sizes.
+
+{% capture example %}
+<button type="button" class="btn btn-primary btn-lg">Large button</button>
+<button type="button" class="btn btn-secondary btn-lg">Large button</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<button type="button" class="btn btn-primary btn-sm">Small button</button>
+<button type="button" class="btn btn-secondary btn-sm">Small button</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+Create block level buttons—those that span the full width of a parent—by adding `.btn-block`.
+
+{% capture example %}
+<button type="button" class="btn btn-primary btn-lg btn-block">Block level button</button>
+<button type="button" class="btn btn-secondary btn-lg btn-block">Block level button</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Active state
+
+Buttons will appear pressed (with a darker background, darker border, and inset shadow) when active. **There's no need to add a class to `<button>`s as they use a pseudo-class**. However, you can still force the same active appearance with `.active` (and include the <code>aria-pressed="true"</code> attribute) should you need to replicate the state programmatically.
+
+{% capture example %}
+<a href="#" class="btn btn-primary btn-lg active" role="button" aria-pressed="true">Primary link</a>
+<a href="#" class="btn btn-secondary btn-lg active" role="button" aria-pressed="true">Link</a>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Disabled state
+
+Make buttons look inactive by adding the `disabled` boolean attribute to any `<button>` element.
+
+{% capture example %}
+<button type="button" class="btn btn-lg btn-primary" disabled>Primary button</button>
+<button type="button" class="btn btn-secondary btn-lg" disabled>Button</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+Disabled buttons using the `<a>` element behave a bit different:
+
+- `<a>`s don't support the `disabled` attribute, so you must add the `.disabled` class to make it visually appear disabled.
+- Some future-friendly styles are included to disable all `pointer-events` on anchor buttons. In browsers which support that property, you won't see the disabled cursor at all.
+- Disabled buttons should include the `aria-disabled="true"` attribute to indicate the state of the element to assistive technologies.
+
+{% capture example %}
+<a href="#" class="btn btn-primary btn-lg disabled" tabindex="-1" role="button" aria-disabled="true">Primary link</a>
+<a href="#" class="btn btn-secondary btn-lg disabled" tabindex="-1" role="button" aria-disabled="true">Link</a>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture callout %}
+##### Link functionality caveat
+
+The `.disabled` class uses `pointer-events: none` to try to disable the link functionality of `<a>`s, but that CSS property is not yet standardized. In addition, even in browsers that do support `pointer-events: none`, keyboard navigation remains unaffected, meaning that sighted keyboard users and users of assistive technologies will still be able to activate these links. So to be safe, add a `tabindex="-1"` attribute on these links (to prevent them from receiving keyboard focus) and use custom JavaScript to disable their functionality.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+## Button plugin
+
+Do more with buttons. Control button states or create groups of buttons for more components like toolbars.
+
+### Toggle states
+
+Add `data-toggle="button"` to toggle a button's `active` state. If you're pre-toggling a button, you must manually add the `.active` class **and** `aria-pressed="true"` to the `<button>`.
+
+{% capture example %}
+<button type="button" class="btn btn-primary" data-toggle="button" aria-pressed="false" autocomplete="off">
+  Single toggle
+</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Checkbox and radio buttons
+
+Bootstrap's `.button` styles can be applied to other elements, such as `<label>`s, to provide checkbox or radio style button toggling. Add `data-toggle="buttons"` to a `.btn-group` containing those modified buttons to enable their toggling behavior via JavaScript and add `.btn-group-toggle` to style the `<input>`s within your buttons. **Note that you can create single input-powered buttons or groups of them.**
+
+The checked state for these buttons is **only updated via `click` event** on the button. If you use another method to update the input—e.g., with `<input type="reset">` or by manually applying the input's `checked` property—you'll need to toggle `.active` on the `<label>` manually.
+
+Note that pre-checked buttons require you to manually add the `.active` class to the input's `<label>`.
+
+{% capture example %}
+<div class="btn-group-toggle" data-toggle="buttons">
+  <label class="btn btn-secondary active">
+    <input type="checkbox" checked autocomplete="off"> Checked
+  </label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="btn-group btn-group-toggle" data-toggle="buttons">
+  <label class="btn btn-secondary active">
+    <input type="radio" name="options" id="option1" autocomplete="off" checked> Active
+  </label>
+  <label class="btn btn-secondary">
+    <input type="radio" name="options" id="option2" autocomplete="off"> Radio
+  </label>
+  <label class="btn btn-secondary">
+    <input type="radio" name="options" id="option3" autocomplete="off"> Radio
+  </label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Methods
+
+| Method | Description |
+| --- | --- |
+| `$().button('toggle')` | Toggles push state. Gives the button the appearance that it has been activated. |
+| `$().button('dispose')` | Destroys an element's button. |
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/card.md b/vendor/twbs/bootstrap/site/docs/4.1/components/card.md
new file mode 100644
index 000000000..25e9ec2d0
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/card.md
@@ -0,0 +1,682 @@
+---
+layout: docs
+title: Cards
+description: Bootstrap's cards provide a flexible and extensible content container with multiple variants and options.
+group: components
+toc: true
+---
+
+## About
+
+A **card** is a flexible and extensible content container. It includes options for headers and footers, a wide variety of content, contextual background colors, and powerful display options. If you're familiar with Bootstrap 3, cards replace our old panels, wells, and thumbnails. Similar functionality to those components is available as modifier classes for cards.
+
+## Example
+
+Cards are built with as little markup and styles as possible, but still manage to deliver a ton of control and customization. Built with flexbox, they offer easy alignment and mix well with other Bootstrap components. They have no `margin` by default, so use [spacing utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) as needed.
+
+Below is an example of a basic card with mixed content and a fixed width. Cards have no fixed width to start, so they'll naturally fill the full width of its parent element. This is easily customized with our various [sizing options](#sizing).
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+  <div class="card-body">
+    <h5 class="card-title">Card title</h5>
+    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Content types
+
+Cards support a wide variety of content, including images, text, list groups, links, and more. Below are examples of what's supported.
+
+### Body
+
+The building block of a card is the `.card-body`. Use it whenever you need a padded section within a card.
+
+{% capture example %}
+<div class="card">
+  <div class="card-body">
+    This is some text within a card body.
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Titles, text, and links
+
+Card titles are used by adding `.card-title` to a `<h*>` tag. In the same way, links are added and placed next to each other by adding `.card-link` to an `<a>` tag.
+
+Subtitles are used by adding a `.card-subtitle` to a `<h*>` tag. If the `.card-title` and the `.card-subtitle` items are placed in a `.card-body` item, the card title and subtitle are aligned nicely.
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <div class="card-body">
+    <h5 class="card-title">Card title</h5>
+    <h6 class="card-subtitle mb-2 text-muted">Card subtitle</h6>
+    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
+    <a href="#" class="card-link">Card link</a>
+    <a href="#" class="card-link">Another link</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Images
+
+`.card-img-top` places an image to the top of the card. With `.card-text`, text can be added to the card. Text within `.card-text` can also be styled with the standard HTML tags.
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <img class="card-img-top" data-src="holder.js/100px180/?text=Image cap" alt="Card image cap">
+  <div class="card-body">
+    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### List groups
+
+Create lists of content in a card with a flush list group.
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <ul class="list-group list-group-flush">
+    <li class="list-group-item">Cras justo odio</li>
+    <li class="list-group-item">Dapibus ac facilisis in</li>
+    <li class="list-group-item">Vestibulum at eros</li>
+  </ul>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <div class="card-header">
+    Featured
+  </div>
+  <ul class="list-group list-group-flush">
+    <li class="list-group-item">Cras justo odio</li>
+    <li class="list-group-item">Dapibus ac facilisis in</li>
+    <li class="list-group-item">Vestibulum at eros</li>
+  </ul>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Kitchen sink
+
+Mix and match multiple content types to create the card you need, or throw everything in there. Shown below are image styles, blocks, text styles, and a list group—all wrapped in a fixed-width card.
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <img class="card-img-top" data-src="holder.js/100px180/?text=Image cap" alt="Card image cap">
+  <div class="card-body">
+    <h5 class="card-title">Card title</h5>
+    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
+  </div>
+  <ul class="list-group list-group-flush">
+    <li class="list-group-item">Cras justo odio</li>
+    <li class="list-group-item">Dapibus ac facilisis in</li>
+    <li class="list-group-item">Vestibulum at eros</li>
+  </ul>
+  <div class="card-body">
+    <a href="#" class="card-link">Card link</a>
+    <a href="#" class="card-link">Another link</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Header and footer
+
+Add an optional header and/or footer within a card.
+
+{% capture example %}
+<div class="card">
+  <div class="card-header">
+    Featured
+  </div>
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Card headers can be styled by adding `.card-header` to `<h*>` elements.
+
+{% capture example %}
+<div class="card">
+  <h5 class="card-header">Featured</h5>
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="card">
+  <div class="card-header">
+    Quote
+  </div>
+  <div class="card-body">
+    <blockquote class="blockquote mb-0">
+      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+      <footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
+    </blockquote>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="card text-center">
+  <div class="card-header">
+    Featured
+  </div>
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+  <div class="card-footer text-muted">
+    2 days ago
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Sizing
+
+Cards assume no specific `width` to start, so they'll be 100% wide unless otherwise stated. You can change this as needed with custom CSS, grid classes, grid Sass mixins, or utilities.
+
+### Using grid markup
+
+Using the grid, wrap cards in columns and rows as needed.
+
+{% capture example %}
+<div class="row">
+  <div class="col-sm-6">
+    <div class="card">
+      <div class="card-body">
+        <h5 class="card-title">Special title treatment</h5>
+        <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+        <a href="#" class="btn btn-primary">Go somewhere</a>
+      </div>
+    </div>
+  </div>
+  <div class="col-sm-6">
+    <div class="card">
+      <div class="card-body">
+        <h5 class="card-title">Special title treatment</h5>
+        <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+        <a href="#" class="btn btn-primary">Go somewhere</a>
+      </div>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Using utilities
+
+Use our handful of [available sizing utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/sizing/) to quickly set a card's width.
+
+{% capture example %}
+<div class="card w-75">
+  <div class="card-body">
+    <h5 class="card-title">Card title</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Button</a>
+  </div>
+</div>
+
+<div class="card w-50">
+  <div class="card-body">
+    <h5 class="card-title">Card title</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Button</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Using custom CSS
+
+Use custom CSS in your stylesheets or as inline styles to set a width.
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Text alignment
+
+You can quickly change the text alignment of any card—in its entirety or specific parts—with our [text align classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/text/#text-alignment).
+
+{% capture example %}
+<div class="card" style="width: 18rem;">
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+
+<div class="card text-center" style="width: 18rem;">
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+
+<div class="card text-right" style="width: 18rem;">
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Navigation
+
+Add some navigation to a card's header (or block) with Bootstrap's [nav components]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/navs/).
+
+{% capture example %}
+<div class="card text-center">
+  <div class="card-header">
+    <ul class="nav nav-tabs card-header-tabs">
+      <li class="nav-item">
+        <a class="nav-link active" href="#">Active</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Link</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link disabled" href="#">Disabled</a>
+      </li>
+    </ul>
+  </div>
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="card text-center">
+  <div class="card-header">
+    <ul class="nav nav-pills card-header-pills">
+      <li class="nav-item">
+        <a class="nav-link active" href="#">Active</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Link</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link disabled" href="#">Disabled</a>
+      </li>
+    </ul>
+  </div>
+  <div class="card-body">
+    <h5 class="card-title">Special title treatment</h5>
+    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
+    <a href="#" class="btn btn-primary">Go somewhere</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Images
+
+Cards include a few options for working with images. Choose from appending "image caps" at either end of a card, overlaying images with card content, or simply embedding the image in a card.
+
+### Image caps
+
+Similar to headers and footers, cards can include top and bottom "image caps"—images at the top or bottom of a card.
+
+{% capture example %}
+<div class="card mb-3">
+  <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+  <div class="card-body">
+    <h5 class="card-title">Card title</h5>
+    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+  </div>
+</div>
+<div class="card">
+  <div class="card-body">
+    <h5 class="card-title">Card title</h5>
+    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+  </div>
+  <img class="card-img-bottom" data-src="holder.js/100px180/" alt="Card image cap">
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Image overlays
+
+Turn an image into a card background and overlay your card's text. Depending on the image, you may or may not need additional styles or utilities.
+
+{% capture example %}
+<div class="card bg-dark text-white">
+  <img class="card-img" data-src="holder.js/100px270/#55595c:#373a3c/text:Card image" alt="Card image">
+  <div class="card-img-overlay">
+    <h5 class="card-title">Card title</h5>
+    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+    <p class="card-text">Last updated 3 mins ago</p>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Card styles
+
+Cards include various options for customizing their backgrounds, borders, and color.
+
+### Background and color
+
+Use [text and background utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/colors/) to change the appearance of a card.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<div class="card{% unless color.name == "light" %} text-white{% endunless %} bg-{{ color.name }} mb-3" style="max-width: 18rem;">
+  <div class="card-header">Header</div>
+  <div class="card-body">
+    <h5 class="card-title">{{ color.name | capitalize }} card title</h5>
+    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
+  </div>
+</div>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+{% include callout-warning-color-assistive-technologies.md %}
+
+### Border
+
+Use [border utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/borders/) to change just the `border-color` of a card. Note that you can put `.text-{color}` classes on the parent `.card` or a subset of the card's contents as shown below.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<div class="card border-{{ color.name }} mb-3" style="max-width: 18rem;">
+  <div class="card-header">Header</div>
+  <div class="card-body{% unless color.name == "light" %} text-{{ color.name }}{% endunless %}">
+    <h5 class="card-title">{{ color.name | capitalize }} card title</h5>
+    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
+  </div>
+</div>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+### Mixins utilities
+
+You can also change the borders on the card header and footer as needed, and even remove their `background-color` with `.bg-transparent`.
+
+{% capture example %}
+<div class="card border-success mb-3" style="max-width: 18rem;">
+  <div class="card-header bg-transparent border-success">Header</div>
+  <div class="card-body text-success">
+    <h5 class="card-title">Success card title</h5>
+    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
+  </div>
+  <div class="card-footer bg-transparent border-success">Footer</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Card layout
+
+In addition to styling the content within cards, Bootstrap includes a few options for laying out series of cards. For the time being, **these layout options are not yet responsive**.
+
+### Card groups
+
+Use card groups to render cards as a single, attached element with equal width and height columns. Card groups use `display: flex;` to achieve their uniform sizing.
+
+{% capture example %}
+<div class="card-group">
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+When using card groups with footers, their content will automatically line up.
+
+{% capture example %}
+<div class="card-group">
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+    </div>
+    <div class="card-footer">
+      <small class="text-muted">Last updated 3 mins ago</small>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
+    </div>
+    <div class="card-footer">
+      <small class="text-muted">Last updated 3 mins ago</small>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
+    </div>
+    <div class="card-footer">
+      <small class="text-muted">Last updated 3 mins ago</small>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Card decks
+
+Need a set of equal width and height cards that aren't attached to one another? Use card decks.
+
+{% capture example %}
+<div class="card-deck">
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px200/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px200/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px200/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Just like with card groups, card footers in decks will automatically line up.
+
+{% capture example %}
+<div class="card-deck">
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+    </div>
+    <div class="card-footer">
+      <small class="text-muted">Last updated 3 mins ago</small>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
+    </div>
+    <div class="card-footer">
+      <small class="text-muted">Last updated 3 mins ago</small>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px180/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
+    </div>
+    <div class="card-footer">
+      <small class="text-muted">Last updated 3 mins ago</small>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Card columns
+
+Cards can be organized into [Masonry](https://masonry.desandro.com/)-like columns with just CSS by wrapping them in `.card-columns`. Cards are built with CSS `column` properties instead of flexbox for easier alignment. Cards are ordered from top to bottom and left to right.
+
+**Heads up!** Your mileage with card columns may vary. To prevent cards breaking across columns, we must set them to `display: inline-block` as `column-break-inside: avoid` isn't a bulletproof solution yet.
+
+{% capture example %}
+<div class="card-columns">
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px160/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title that wraps to a new line</h5>
+      <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+    </div>
+  </div>
+  <div class="card p-3">
+    <blockquote class="blockquote mb-0 card-body">
+      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+      <footer class="blockquote-footer">
+        <small class="text-muted">
+          Someone famous in <cite title="Source Title">Source Title</cite>
+        </small>
+      </footer>
+    </blockquote>
+  </div>
+  <div class="card">
+    <img class="card-img-top" data-src="holder.js/100px160/" alt="Card image cap">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+  <div class="card bg-primary text-white text-center p-3">
+    <blockquote class="blockquote mb-0">
+      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat.</p>
+      <footer class="blockquote-footer">
+        <small>
+          Someone famous in <cite title="Source Title">Source Title</cite>
+        </small>
+      </footer>
+    </blockquote>
+  </div>
+  <div class="card text-center">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This card has a regular title and short paragraphy of text below it.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+  <div class="card">
+    <img class="card-img" data-src="holder.js/100px260/" alt="Card image">
+  </div>
+  <div class="card p-3 text-right">
+    <blockquote class="blockquote mb-0">
+      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+      <footer class="blockquote-footer">
+        <small class="text-muted">
+          Someone famous in <cite title="Source Title">Source Title</cite>
+        </small>
+      </footer>
+    </blockquote>
+  </div>
+  <div class="card">
+    <div class="card-body">
+      <h5 class="card-title">Card title</h5>
+      <p class="card-text">This is another card with title and supporting text below. This card has some additional content to make it slightly taller overall.</p>
+      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Card columns can also be extended and customized with some additional code. Shown below is an extension of the `.card-columns` class using the same CSS we use—CSS columns— to generate a set of responsive tiers for changing the number of columns.
+
+{% highlight scss %}
+.card-columns {
+  @include media-breakpoint-only(lg) {
+    column-count: 4;
+  }
+  @include media-breakpoint-only(xl) {
+    column-count: 5;
+  }
+}
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/carousel.md b/vendor/twbs/bootstrap/site/docs/4.1/components/carousel.md
new file mode 100644
index 000000000..7c4a0472e
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/carousel.md
@@ -0,0 +1,334 @@
+---
+layout: docs
+title: Carousel
+description: A slideshow component for cycling through elements—images or slides of text—like a carousel.
+group: components
+toc: true
+---
+
+## How it works
+
+The carousel is a slideshow for cycling through a series of content, built with CSS 3D transforms and a bit of JavaScript. It works with a series of images, text, or custom markup. It also includes support for previous/next controls and indicators.
+
+In browsers where the [Page Visibility API](https://www.w3.org/TR/page-visibility/) is supported, the carousel will avoid sliding when the webpage is not visible to the user (such as when the browser tab is inactive, the browser window is minimized, etc.).
+
+Please be aware that nested carousels are not supported, and carousels are generally not compliant with accessibility standards.
+
+Lastly, if you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util).
+
+## Example
+
+Carousels don't automatically normalize slide dimensions. As such, you may need to use additional utilities or custom styles to appropriately size content. While carousels support previous/next controls and indicators, they're not explicitly required. Add and customize as you see fit.
+
+**The `.active` class needs to be added to one of the slides** otherwise the carousel will not be visible. Also be sure to set a unique id on the `.carousel` for optional controls, especially if you're using multiple carousels on a single page. Control and indicator elements must have a `data-target` attribute (or `href` for links) that matches the id of the `.carousel` element.
+
+### Slides only
+
+Here's a carousel with slides only. Note the presence of the `.d-block` and `.w-100` on carousel images to prevent browser default image alignment.
+
+{% capture example %}
+<div id="carouselExampleSlidesOnly" class="carousel slide" data-ride="carousel">
+  <div class="carousel-inner">
+    <div class="carousel-item active">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### With controls
+
+Adding in the previous and next controls:
+
+{% capture example %}
+<div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
+  <div class="carousel-inner">
+    <div class="carousel-item active">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
+    </div>
+  </div>
+  <a class="carousel-control-prev" href="#carouselExampleControls" role="button" data-slide="prev">
+    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
+    <span class="sr-only">Previous</span>
+  </a>
+  <a class="carousel-control-next" href="#carouselExampleControls" role="button" data-slide="next">
+    <span class="carousel-control-next-icon" aria-hidden="true"></span>
+    <span class="sr-only">Next</span>
+  </a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### With indicators
+
+You can also add the indicators to the carousel, alongside the controls, too.
+
+{% capture example %}
+<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
+  <ol class="carousel-indicators">
+    <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
+    <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
+    <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
+  </ol>
+  <div class="carousel-inner">
+    <div class="carousel-item active">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
+    </div>
+  </div>
+  <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
+    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
+    <span class="sr-only">Previous</span>
+  </a>
+  <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
+    <span class="carousel-control-next-icon" aria-hidden="true"></span>
+    <span class="sr-only">Next</span>
+  </a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### With captions
+
+Add captions to your slides easily with the `.carousel-caption` element within any `.carousel-item`. They can be easily hidden on smaller viewports, as shown below, with optional [display utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/display/). We hide them initially with `.d-none` and bring them back on medium-sized devices with `.d-md-block`.
+
+<div class="bd-example">
+  <div id="carouselExampleCaptions" class="carousel slide" data-ride="carousel">
+    <ol class="carousel-indicators">
+      <li data-target="#carouselExampleCaptions" data-slide-to="0" class="active"></li>
+      <li data-target="#carouselExampleCaptions" data-slide-to="1"></li>
+      <li data-target="#carouselExampleCaptions" data-slide-to="2"></li>
+    </ol>
+    <div class="carousel-inner">
+      <div class="carousel-item active">
+        <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
+        <div class="carousel-caption d-none d-md-block">
+          <h5>First slide label</h5>
+          <p>Nulla vitae elit libero, a pharetra augue mollis interdum.</p>
+        </div>
+      </div>
+      <div class="carousel-item">
+        <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
+        <div class="carousel-caption d-none d-md-block">
+          <h5>Second slide label</h5>
+          <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
+        </div>
+      </div>
+      <div class="carousel-item">
+        <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
+        <div class="carousel-caption d-none d-md-block">
+          <h5>Third slide label</h5>
+          <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur.</p>
+        </div>
+      </div>
+    </div>
+    <a class="carousel-control-prev" href="#carouselExampleCaptions" role="button" data-slide="prev">
+      <span class="carousel-control-prev-icon" aria-hidden="true"></span>
+      <span class="sr-only">Previous</span>
+    </a>
+    <a class="carousel-control-next" href="#carouselExampleCaptions" role="button" data-slide="next">
+      <span class="carousel-control-next-icon" aria-hidden="true"></span>
+      <span class="sr-only">Next</span>
+    </a>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="carousel-item">
+  <img src="..." alt="...">
+  <div class="carousel-caption d-none d-md-block">
+    <h5>...</h5>
+    <p>...</p>
+  </div>
+</div>
+{% endhighlight %}
+
+### Crossfade
+
+Add `.carousel-fade` to your carousel to animate slides with a fade transition instead of a slide.
+
+{% capture example %}
+<div id="carouselExampleFade" class="carousel slide carousel-fade" data-ride="carousel">
+  <div class="carousel-inner">
+    <div class="carousel-item active">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
+    </div>
+    <div class="carousel-item">
+      <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
+    </div>
+  </div>
+  <a class="carousel-control-prev" href="#carouselExampleFade" role="button" data-slide="prev">
+    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
+    <span class="sr-only">Previous</span>
+  </a>
+  <a class="carousel-control-next" href="#carouselExampleFade" role="button" data-slide="next">
+    <span class="carousel-control-next-icon" aria-hidden="true"></span>
+    <span class="sr-only">Next</span>
+  </a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+
+## Usage
+
+### Via data attributes
+
+Use data attributes to easily control the position of the carousel. `data-slide` accepts the keywords `prev` or `next`, which alters the slide position relative to its current position. Alternatively, use `data-slide-to` to pass a raw slide index to the carousel `data-slide-to="2"`, which shifts the slide position to a particular index beginning with `0`.
+
+The `data-ride="carousel"` attribute is used to mark a carousel as animating starting at page load. **It cannot be used in combination with (redundant and unnecessary) explicit JavaScript initialization of the same carousel.**
+
+### Via JavaScript
+
+Call carousel manually with:
+
+{% highlight js %}
+$('.carousel').carousel()
+{% endhighlight %}
+
+### Options
+
+Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-interval=""`.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 100px;">Name</th>
+      <th style="width: 50px;">Type</th>
+      <th style="width: 50px;">Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>interval</td>
+      <td>number</td>
+      <td>5000</td>
+      <td>The amount of time to delay between automatically cycling an item. If false, carousel will not automatically cycle.</td>
+    </tr>
+    <tr>
+      <td>keyboard</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Whether the carousel should react to keyboard events.</td>
+    </tr>
+    <tr>
+      <td>pause</td>
+      <td>string | boolean</td>
+      <td>"hover"</td>
+      <td><p>If set to <code>"hover"</code>, pauses the cycling of the carousel on <code>mouseenter</code> and resumes the cycling of the carousel on <code>mouseleave</code>. If set to <code>false</code>, hovering over the carousel won't pause it.</p>
+      <p>On touch-enabled devices, when set to <code>"hover"</code>, cycling will pause on <code>touchend</code> (once the user finished interacting with the carousel) for two intervals, before automatically resuming. Note that this is in addition to the above mouse behavior.</p></td>
+    </tr>
+    <tr>
+      <td>ride</td>
+      <td>string</td>
+      <td>false</td>
+      <td>Autoplays the carousel after the user manually cycles the first item. If "carousel", autoplays the carousel on load.</td>
+    </tr>
+    <tr>
+      <td>wrap</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Whether the carousel should cycle continuously or have hard stops.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Methods
+
+{% include callout-danger-async-methods.md %}
+
+#### `.carousel(options)`
+
+Initializes the carousel with an optional options `object` and starts cycling through items.
+
+{% highlight js %}
+$('.carousel').carousel({
+  interval: 2000
+})
+{% endhighlight %}
+
+#### `.carousel('cycle')`
+
+Cycles through the carousel items from left to right.
+
+#### `.carousel('pause')`
+
+Stops the carousel from cycling through items.
+
+#### `.carousel(number)`
+
+Cycles the carousel to a particular frame (0 based, similar to an array). **Returns to the caller before the target item has been shown** (i.e. before the `slid.bs.carousel` event occurs).
+
+#### `.carousel('prev')`
+
+Cycles to the previous item. **Returns to the caller before the previous item has been shown** (i.e. before the `slid.bs.carousel` event occurs).
+
+#### `.carousel('next')`
+
+Cycles to the next item. **Returns to the caller before the next item has been shown** (i.e. before the `slid.bs.carousel` event occurs).
+
+#### `.carousel('dispose')`
+
+Destroys an element's carousel.
+
+### Events
+
+Bootstrap's carousel class exposes two events for hooking into carousel functionality. Both events have the following additional properties:
+
+- `direction`: The direction in which the carousel is sliding (either `"left"` or `"right"`).
+- `relatedTarget`: The DOM element that is being slid into place as the active item.
+- `from`: The index of the current item
+- `to`: The index of the next item
+
+All carousel events are fired at the carousel itself (i.e. at the `<div class="carousel">`).
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>slide.bs.carousel</td>
+      <td>This event fires immediately when the <code>slide</code> instance method is invoked.</td>
+    </tr>
+    <tr>
+      <td>slid.bs.carousel</td>
+      <td>This event is fired when the carousel has completed its slide transition.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('#myCarousel').on('slide.bs.carousel', function () {
+  // do something…
+})
+{% endhighlight %}
+
+### Change transition duration
+
+The transition duration of `.carousel-item` can be changed with the `$carousel-transition` Sass variable before compiling or custom styles if you're using the compiled CSS. If multiple transitions are applied, make sure the transform transition is defined first (eg. `transition: transform 2s ease, opacity .5s ease-out`).
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/collapse.md b/vendor/twbs/bootstrap/site/docs/4.1/components/collapse.md
new file mode 100644
index 000000000..047423b91
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/collapse.md
@@ -0,0 +1,249 @@
+---
+layout: docs
+title: Collapse
+description: Toggle the visibility of content across your project with a few classes and our JavaScript plugins.
+group: components
+toc: true
+---
+
+## How it works
+
+The collapse JavaScript plugin is used to show and hide content. Buttons or anchors are used as triggers that are mapped to specific elements you toggle. Collapsing an element will animate the `height` from it's current value to `0`. Given how CSS handles animations, you cannot use `padding` on a `.collapse` element. Instead, use the class as an independent wrapping element.
+
+## Example
+
+Click the buttons below to show and hide another element via class changes:
+
+- `.collapse` hides content
+- `.collapsing` is applied during transitions
+- `.collapse.show` shows content
+
+You can use a link with the `href` attribute, or a button with the `data-target` attribute. In both cases, the `data-toggle="collapse"` is required.
+
+{% capture example %}
+<p>
+  <a class="btn btn-primary" data-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample">
+    Link with href
+  </a>
+  <button class="btn btn-primary" type="button" data-toggle="collapse" data-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
+    Button with data-target
+  </button>
+</p>
+<div class="collapse" id="collapseExample">
+  <div class="card card-body">
+    Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Multiple targets
+
+A `<button>` or `<a>` can show and hide multiple elements by referencing them with a JQuery selector in its `href` or `data-target` attribute.
+Multiple `<button>` or `<a>` can show and hide an element if they each reference it with their `href` or `data-target` attribute
+
+{% capture example %}
+<p>
+  <a class="btn btn-primary" data-toggle="collapse" href="#multiCollapseExample1" role="button" aria-expanded="false" aria-controls="multiCollapseExample1">Toggle first element</a>
+  <button class="btn btn-primary" type="button" data-toggle="collapse" data-target="#multiCollapseExample2" aria-expanded="false" aria-controls="multiCollapseExample2">Toggle second element</button>
+  <button class="btn btn-primary" type="button" data-toggle="collapse" data-target=".multi-collapse" aria-expanded="false" aria-controls="multiCollapseExample1 multiCollapseExample2">Toggle both elements</button>
+</p>
+<div class="row">
+  <div class="col">
+    <div class="collapse multi-collapse" id="multiCollapseExample1">
+      <div class="card card-body">
+        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
+      </div>
+    </div>
+  </div>
+  <div class="col">
+    <div class="collapse multi-collapse" id="multiCollapseExample2">
+      <div class="card card-body">
+        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
+      </div>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Accordion example
+
+Using the [card]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/card/) component, you can extend the default collapse behavior to create an accordion.
+
+{% capture example %}
+<div class="accordion" id="accordionExample">
+  <div class="card">
+    <div class="card-header" id="headingOne">
+      <h5 class="mb-0">
+        <button class="btn btn-link" type="button" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
+          Collapsible Group Item #1
+        </button>
+      </h5>
+    </div>
+
+    <div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordionExample">
+      <div class="card-body">
+        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+      </div>
+    </div>
+  </div>
+  <div class="card">
+    <div class="card-header" id="headingTwo">
+      <h5 class="mb-0">
+        <button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
+          Collapsible Group Item #2
+        </button>
+      </h5>
+    </div>
+    <div id="collapseTwo" class="collapse" aria-labelledby="headingTwo" data-parent="#accordionExample">
+      <div class="card-body">
+        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+      </div>
+    </div>
+  </div>
+  <div class="card">
+    <div class="card-header" id="headingThree">
+      <h5 class="mb-0">
+        <button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
+          Collapsible Group Item #3
+        </button>
+      </h5>
+    </div>
+    <div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordionExample">
+      <div class="card-body">
+        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+      </div>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Accessibility
+
+Be sure to add `aria-expanded` to the control element. This attribute explicitly conveys the current state of the collapsible element tied to the control to screen readers and similar assistive technologies. If the collapsible element is closed by default, the attribute on the control element should have a value of `aria-expanded="false"`. If you've set the collapsible element to be open by default using the `show` class, set `aria-expanded="true"` on the control instead. The plugin will automatically toggle this attribute on the control based on whether or not the collapsible element has been opened or closed (via JavaScript, or because the user triggered another control element also tied to the same collapsbile element). If the control element's HTML element is not a button (e.g., an `<a>` or `<div>`), the attribute `role="button"` should be added to the element.
+
+If your control element is targeting a single collapsible element – i.e. the `data-target` attribute is pointing to an `id` selector – you should add the `aria-controls` attribute to the control element, containing the `id` of the collapsible element. Modern screen readers and similar assistive technologies make use of this attribute to provide users with additional shortcuts to navigate directly to the collapsible element itself.
+
+Note that Bootstrap's current implementation does not cover the various keyboard interactions described in the [WAI-ARIA Authoring Practices 1.1 accordion pattern](https://www.w3.org/TR/wai-aria-practices-1.1/#accordion) - you will need to include these yourself with custom JavaScript.
+
+## Usage
+
+The collapse plugin utilizes a few classes to handle the heavy lifting:
+
+- `.collapse` hides the content
+- `.collapse.show` shows the content
+- `.collapsing` is added when the transition starts, and removed when it finishes
+
+These classes can be found in `_transitions.scss`.
+
+### Via data attributes
+
+Just add `data-toggle="collapse"` and a `data-target` to the element to automatically assign control of one or more collapsible elements. The `data-target` attribute accepts a CSS selector to apply the collapse to. Be sure to add the class `collapse` to the collapsible element. If you'd like it to default open, add the additional class `show`.
+
+To add accordion-like group management to a collapsible area, add the data attribute `data-parent="#selector"`. Refer to the demo to see this in action.
+
+### Via JavaScript
+
+Enable manually with:
+
+{% highlight js %}
+$('.collapse').collapse()
+{% endhighlight %}
+
+### Options
+
+Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-parent=""`.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 100px;">Name</th>
+      <th style="width: 50px;">Type</th>
+      <th style="width: 50px;">Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>parent</td>
+      <td>selector | jQuery object | DOM element </td>
+      <td>false</td>
+      <td>If parent is provided, then all collapsible elements under the specified parent will be closed when this collapsible item is shown. (similar to traditional accordion behavior - this is dependent on the <code>card</code> class). The attribute has to be set on the target collapsible area.</td>
+    </tr>
+    <tr>
+      <td>toggle</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Toggles the collapsible element on invocation</td>
+    </tr>
+  </tbody>
+</table>
+
+### Methods
+
+{% include callout-danger-async-methods.md %}
+
+#### `.collapse(options)`
+
+Activates your content as a collapsible element. Accepts an optional options `object`.
+
+{% highlight js %}
+$('#myCollapsible').collapse({
+  toggle: false
+})
+{% endhighlight %}
+
+#### `.collapse('toggle')`
+
+Toggles a collapsible element to shown or hidden. **Returns to the caller before the collapsible element has actually been shown or hidden** (i.e. before the `shown.bs.collapse` or `hidden.bs.collapse` event occurs).
+
+#### `.collapse('show')`
+
+Shows a collapsible element. **Returns to the caller before the collapsible element has actually been shown** (i.e. before the `shown.bs.collapse` event occurs).
+
+#### `.collapse('hide')`
+
+Hides a collapsible element. **Returns to the caller before the collapsible element has actually been hidden** (i.e. before the `hidden.bs.collapse` event occurs).
+
+#### `.collapse('dispose')`
+
+Destroys an element's collapse.
+
+### Events
+
+Bootstrap's collapse class exposes a few events for hooking into collapse functionality.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>show.bs.collapse</td>
+      <td>This event fires immediately when the <code>show</code> instance method is called.</td>
+    </tr>
+    <tr>
+      <td>shown.bs.collapse</td>
+      <td>This event is fired when a collapse element has been made visible to the user (will wait for CSS transitions to complete).</td>
+    </tr>
+    <tr>
+      <td>hide.bs.collapse</td>
+      <td>This event is fired immediately when the <code>hide</code> method has been called.</td>
+    </tr>
+    <tr>
+      <td>hidden.bs.collapse</td>
+      <td>This event is fired when a collapse element has been hidden from the user (will wait for CSS transitions to complete).</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('#myCollapsible').on('hidden.bs.collapse', function () {
+  // do something…
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/dropdowns.md b/vendor/twbs/bootstrap/site/docs/4.1/components/dropdowns.md
new file mode 100644
index 000000000..9adfa499b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/dropdowns.md
@@ -0,0 +1,861 @@
+---
+layout: docs
+title: Dropdowns
+description: Toggle contextual overlays for displaying lists of links and more with the Bootstrap dropdown plugin.
+group: components
+toc: true
+---
+
+## Overview
+
+Dropdowns are toggleable, contextual overlays for displaying lists of links and more. They're made interactive with the included Bootstrap dropdown JavaScript plugin. They're toggled by clicking, not by hovering; this is [an intentional design decision.](http://markdotto.com/2012/02/27/bootstrap-explained-dropdowns/)
+
+Dropdowns are built on a third party library, [Popper.js](https://popper.js.org/), which provides dynamic positioning and viewport detection. Be sure to include [popper.min.js]({{ site.cdn.popper }}) before Bootstrap's JavaScript or use `bootstrap.bundle.min.js` / `bootstrap.bundle.js` which contains Popper.js. Popper.js isn't used to position dropdowns in navbars though as dynamic positioning isn't required.
+
+If you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util).
+
+## Accessibility
+
+The [<abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr>](https://www.w3.org/TR/wai-aria/) standard defines an actual [`role="menu"` widget](https://www.w3.org/WAI/PF/aria/roles#menu), but this is specific to application-like menus which trigger actions or functions. <abbr title="Accessible Rich Internet Applications">ARIA</abbr> menus can only contain menu items, checkbox menu items, radio button menu items, radio button groups, and sub-menus.
+
+Bootstrap's dropdowns, on the other hand, are designed to be generic and applicable to a variety of situations and markup structures. For instance, it is possible to create dropdowns that contain additional inputs and form controls, such as search fields or login forms. For this reason, Bootstrap does not expect (nor automatically add) any of the `role` and `aria-` attributes required for true <abbr title="Accessible Rich Internet Applications">ARIA</abbr> menus. Authors will have to include these more specific attributes themselves.
+
+However, Bootstrap does add built-in support for most standard keyboard menu interactions, such as the ability to move through individual `.dropdown-item` elements using the cursor keys and close the menu with the <kbd>ESC</kbd> key.
+
+## Examples
+
+Wrap the dropdown's toggle (your button or link) and the dropdown menu within `.dropdown`, or another element that declares `position: relative;`. Dropdowns can be triggered from `<a>` or `<button>` elements to better fit your potential needs.
+
+### Single button
+
+Any single `.btn` can be turned into a dropdown toggle with some markup changes. Here's how you can put them to work with either `<button>` elements:
+
+{% capture example %}
+<div class="dropdown">
+  <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Dropdown button
+  </button>
+  <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
+    <a class="dropdown-item" href="#">Action</a>
+    <a class="dropdown-item" href="#">Another action</a>
+    <a class="dropdown-item" href="#">Something else here</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+And with `<a>` elements:
+
+{% capture example %}
+<div class="dropdown">
+  <a class="btn btn-secondary dropdown-toggle" href="#" role="button" id="dropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Dropdown link
+  </a>
+
+  <div class="dropdown-menu" aria-labelledby="dropdownMenuLink">
+    <a class="dropdown-item" href="#">Action</a>
+    <a class="dropdown-item" href="#">Another action</a>
+    <a class="dropdown-item" href="#">Something else here</a>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+The best part is you can do this with any button variant, too:
+
+<div class="bd-example">
+  <div class="btn-group">
+    <button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Primary</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Secondary</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Success</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-info dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Info</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-warning dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Warning</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Danger</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+</div>
+
+{% highlight html %}
+<!-- Example single danger button -->
+<div class="btn-group">
+  <button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Action
+  </button>
+  <div class="dropdown-menu">
+    <a class="dropdown-item" href="#">Action</a>
+    <a class="dropdown-item" href="#">Another action</a>
+    <a class="dropdown-item" href="#">Something else here</a>
+    <div class="dropdown-divider"></div>
+    <a class="dropdown-item" href="#">Separated link</a>
+  </div>
+</div>
+{% endhighlight %}
+
+### Split button
+
+Similarly, create split button dropdowns with virtually the same markup as single button dropdowns, but with the addition of `.dropdown-toggle-split` for proper spacing around the dropdown caret.
+
+We use this extra class to reduce the horizontal `padding` on either side of the caret by 25% and remove the `margin-left` that's added for regular button dropdowns. Those extra changes keep the caret centered in the split button and provide a more appropriately sized hit area next to the main button.
+
+<div class="bd-example">
+  <div class="btn-group">
+    <button type="button" class="btn btn-primary">Primary</button>
+    <button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-secondary">Secondary</button>
+    <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-success">Success</button>
+    <button type="button" class="btn btn-success dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-info">Info</button>
+    <button type="button" class="btn btn-info dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-warning">Warning</button>
+    <button type="button" class="btn btn-warning dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+  <div class="btn-group">
+    <button type="button" class="btn btn-danger">Danger</button>
+    <button type="button" class="btn btn-danger dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div><!-- /btn-group -->
+</div>
+
+{% highlight html %}
+<!-- Example split danger button -->
+<div class="btn-group">
+  <button type="button" class="btn btn-danger">Action</button>
+  <button type="button" class="btn btn-danger dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <span class="sr-only">Toggle Dropdown</span>
+  </button>
+  <div class="dropdown-menu">
+    <a class="dropdown-item" href="#">Action</a>
+    <a class="dropdown-item" href="#">Another action</a>
+    <a class="dropdown-item" href="#">Something else here</a>
+    <div class="dropdown-divider"></div>
+    <a class="dropdown-item" href="#">Separated link</a>
+  </div>
+</div>
+{% endhighlight %}
+
+## Sizing
+
+Button dropdowns work with buttons of all sizes, including default and split dropdown buttons.
+
+<div class="bd-example">
+  <div class="btn-toolbar" role="toolbar">
+    <div class="btn-group">
+      <button class="btn btn-secondary btn-lg dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        Large button
+      </button>
+      <div class="dropdown-menu">
+        <a class="dropdown-item" href="#">Action</a>
+        <a class="dropdown-item" href="#">Another action</a>
+        <a class="dropdown-item" href="#">Something else here</a>
+        <div class="dropdown-divider"></div>
+        <a class="dropdown-item" href="#">Separated link</a>
+      </div>
+    </div><!-- /btn-group -->
+    <div class="btn-group ml-2">
+      <button type="button" class="btn btn-lg btn-secondary">Large split button</button>
+      <button type="button" class="btn btn-lg btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <span class="sr-only">Toggle Dropdown</span>
+      </button>
+      <div class="dropdown-menu">
+        <a class="dropdown-item" href="#">Action</a>
+        <a class="dropdown-item" href="#">Another action</a>
+        <a class="dropdown-item" href="#">Something else here</a>
+        <div class="dropdown-divider"></div>
+        <a class="dropdown-item" href="#">Separated link</a>
+      </div>
+    </div><!-- /btn-group -->
+  </div><!-- /btn-toolbar -->
+  <div class="btn-toolbar" role="toolbar">
+    <div class="btn-group">
+      <button class="btn btn-secondary btn-sm dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        Small button
+      </button>
+      <div class="dropdown-menu">
+        <a class="dropdown-item" href="#">Action</a>
+        <a class="dropdown-item" href="#">Another action</a>
+        <a class="dropdown-item" href="#">Something else here</a>
+        <div class="dropdown-divider"></div>
+        <a class="dropdown-item" href="#">Separated link</a>
+      </div>
+    </div><!-- /btn-group -->
+    <div class="btn-group ml-2">
+      <button type="button" class="btn btn-sm btn-secondary">Small split button</button>
+      <button type="button" class="btn btn-sm btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <span class="sr-only">Toggle Dropdown</span>
+      </button>
+      <div class="dropdown-menu">
+        <a class="dropdown-item" href="#">Action</a>
+        <a class="dropdown-item" href="#">Another action</a>
+        <a class="dropdown-item" href="#">Something else here</a>
+        <div class="dropdown-divider"></div>
+        <a class="dropdown-item" href="#">Separated link</a>
+      </div>
+    </div><!-- /btn-group -->
+  </div><!-- /btn-toolbar -->
+</div><!-- /example -->
+
+{% highlight html %}
+<!-- Large button groups (default and split) -->
+<div class="btn-group">
+  <button class="btn btn-secondary btn-lg dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Large button
+  </button>
+  <div class="dropdown-menu">
+    ...
+  </div>
+</div>
+<div class="btn-group">
+  <button class="btn btn-secondary btn-lg" type="button">
+    Large split button
+  </button>
+  <button type="button" class="btn btn-lg btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <span class="sr-only">Toggle Dropdown</span>
+  </button>
+  <div class="dropdown-menu">
+    ...
+  </div>
+</div>
+
+<!-- Small button groups (default and split) -->
+<div class="btn-group">
+  <button class="btn btn-secondary btn-sm dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Small button
+  </button>
+  <div class="dropdown-menu">
+    ...
+  </div>
+</div>
+<div class="btn-group">
+  <button class="btn btn-secondary btn-sm" type="button">
+    Small split button
+  </button>
+  <button type="button" class="btn btn-sm btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <span class="sr-only">Toggle Dropdown</span>
+  </button>
+  <div class="dropdown-menu">
+    ...
+  </div>
+</div>
+{% endhighlight %}
+
+## Directions
+
+### Dropup
+
+Trigger dropdown menus above elements by adding `.dropup` to the parent element.
+
+<div class="bd-example">
+  <div class="btn-group dropup">
+    <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      Dropup
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+
+  <div class="btn-group dropup">
+    <button type="button" class="btn btn-secondary">
+      Split dropup
+    </button>
+    <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<!-- Default dropup button -->
+<div class="btn-group dropup">
+  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Dropup
+  </button>
+  <div class="dropdown-menu">
+    <!-- Dropdown menu links -->
+  </div>
+</div>
+
+<!-- Split dropup button -->
+<div class="btn-group dropup">
+  <button type="button" class="btn btn-secondary">
+    Split dropup
+  </button>
+  <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <span class="sr-only">Toggle Dropdown</span>
+  </button>
+  <div class="dropdown-menu">
+    <!-- Dropdown menu links -->
+  </div>
+</div>
+{% endhighlight %}
+
+### Dropright
+
+Trigger dropdown menus at the right of the elements by adding `.dropright` to the parent element.
+
+<div class="bd-example">
+  <div class="btn-group dropright">
+    <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      Dropright
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+
+  <div class="btn-group dropright">
+    <button type="button" class="btn btn-secondary">
+      Split dropright
+    </button>
+    <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropright</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<!-- Default dropright button -->
+<div class="btn-group dropright">
+  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Dropright
+  </button>
+  <div class="dropdown-menu">
+    <!-- Dropdown menu links -->
+  </div>
+</div>
+
+<!-- Split dropright button -->
+<div class="btn-group dropright">
+  <button type="button" class="btn btn-secondary">
+    Split dropright
+  </button>
+  <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <span class="sr-only">Toggle Dropright</span>
+  </button>
+  <div class="dropdown-menu">
+    <!-- Dropdown menu links -->
+  </div>
+</div>
+{% endhighlight %}
+
+### Dropleft
+
+Trigger dropdown menus at the left of the elements by adding `.dropleft` to the parent element.
+
+<div class="bd-example">
+  <div class="btn-group dropleft">
+    <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      Dropleft
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+
+  <div class="btn-group">
+    <div class="btn-group dropleft" role="group">
+      <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <span class="sr-only">Toggle Dropleft</span>
+      </button>
+      <div class="dropdown-menu">
+        <a class="dropdown-item" href="#">Action</a>
+        <a class="dropdown-item" href="#">Another action</a>
+        <a class="dropdown-item" href="#">Something else here</a>
+        <div class="dropdown-divider"></div>
+        <a class="dropdown-item" href="#">Separated link</a>
+      </div>
+    </div>
+    <button type="button" class="btn btn-secondary">
+      Split dropleft
+    </button>
+  </div>
+</div>
+
+{% highlight html %}
+<!-- Default dropleft button -->
+<div class="btn-group dropleft">
+  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Dropleft
+  </button>
+  <div class="dropdown-menu">
+    <!-- Dropdown menu links -->
+  </div>
+</div>
+
+<!-- Split dropleft button -->
+<div class="btn-group">
+  <div class="btn-group dropleft" role="group">
+    <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropleft</span>
+    </button>
+    <div class="dropdown-menu">
+      <!-- Dropdown menu links -->
+    </div>
+  </div>
+  <button type="button" class="btn btn-secondary">
+    Split dropleft
+  </button>
+</div>
+{% endhighlight %}
+
+## Menu items
+
+Historically dropdown menu contents *had* to be links, but that's no longer the case with v4. Now you can optionally use `<button>` elements in your dropdowns instead of just `<a>`s.
+
+{% capture example %}
+<div class="dropdown">
+  <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenu2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Dropdown
+  </button>
+  <div class="dropdown-menu" aria-labelledby="dropdownMenu2">
+    <button class="dropdown-item" type="button">Action</button>
+    <button class="dropdown-item" type="button">Another action</button>
+    <button class="dropdown-item" type="button">Something else here</button>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+You can also create non-interactive dropdown items with `.dropdown-item-text`. Feel free to style further with custom CSS or text utilities.
+
+{% capture example %}
+<div class="dropdown-menu">
+  <span class="dropdown-item-text">Dropdown item text</span>
+  <a class="dropdown-item" href="#">Action</a>
+  <a class="dropdown-item" href="#">Another action</a>
+  <a class="dropdown-item" href="#">Something else here</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Active
+
+Add `.active` to items in the dropdown to **style them as active**.
+
+{% capture example %}
+<div class="dropdown-menu">
+  <a class="dropdown-item" href="#">Regular link</a>
+  <a class="dropdown-item active" href="#">Active link</a>
+  <a class="dropdown-item" href="#">Another link</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Disabled
+
+Add `.disabled` to items in the dropdown to **style them as disabled**.
+
+{% capture example %}
+<div class="dropdown-menu">
+  <a class="dropdown-item" href="#">Regular link</a>
+  <a class="dropdown-item disabled" href="#">Disabled link</a>
+  <a class="dropdown-item" href="#">Another link</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Menu alignment
+
+By default, a dropdown menu is automatically positioned 100% from the top and along the left side of its parent. Add `.dropdown-menu-right` to a `.dropdown-menu` to right align the dropdown menu.
+
+{% capture callout %}
+**Heads up!** Dropdowns are positioned thanks to Popper.js (except when they are contained in a navbar).
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+{% capture example %}
+<div class="btn-group">
+  <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Right-aligned menu
+  </button>
+  <div class="dropdown-menu dropdown-menu-right">
+    <button class="dropdown-item" type="button">Action</button>
+    <button class="dropdown-item" type="button">Another action</button>
+    <button class="dropdown-item" type="button">Something else here</button>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Menu content
+
+### Headers
+
+Add a header to label sections of actions in any dropdown menu.
+
+{% capture example %}
+<div class="dropdown-menu">
+  <h6 class="dropdown-header">Dropdown header</h6>
+  <a class="dropdown-item" href="#">Action</a>
+  <a class="dropdown-item" href="#">Another action</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Dividers
+
+Separate groups of related menu items with a divider.
+
+{% capture example %}
+<div class="dropdown-menu">
+  <a class="dropdown-item" href="#">Action</a>
+  <a class="dropdown-item" href="#">Another action</a>
+  <a class="dropdown-item" href="#">Something else here</a>
+  <div class="dropdown-divider"></div>
+  <a class="dropdown-item" href="#">Separated link</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Text
+
+Place any freeform text within a dropdown menu with text and use [spacing utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/). Note that you'll likely need additional sizing styles to constrain the menu width.
+
+{% capture example %}
+<div class="dropdown-menu p-4 text-muted" style="max-width: 200px;">
+  <p>
+    Some example text that's free-flowing within the dropdown menu.
+  </p>
+  <p class="mb-0">
+    And this is more example text.
+  </p>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Forms
+
+Put a form within a dropdown menu, or make it into a dropdown menu, and use [margin or padding utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) to give it the negative space you require.
+
+{% capture example %}
+<div class="dropdown-menu">
+  <form class="px-4 py-3">
+    <div class="form-group">
+      <label for="exampleDropdownFormEmail1">Email address</label>
+      <input type="email" class="form-control" id="exampleDropdownFormEmail1" placeholder="email@example.com">
+    </div>
+    <div class="form-group">
+      <label for="exampleDropdownFormPassword1">Password</label>
+      <input type="password" class="form-control" id="exampleDropdownFormPassword1" placeholder="Password">
+    </div>
+    <div class="form-check">
+      <input type="checkbox" class="form-check-input" id="dropdownCheck">
+      <label class="form-check-label" for="dropdownCheck">
+        Remember me
+      </label>
+    </div>
+    <button type="submit" class="btn btn-primary">Sign in</button>
+  </form>
+  <div class="dropdown-divider"></div>
+  <a class="dropdown-item" href="#">New around here? Sign up</a>
+  <a class="dropdown-item" href="#">Forgot password?</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<form class="dropdown-menu p-4">
+  <div class="form-group">
+    <label for="exampleDropdownFormEmail2">Email address</label>
+    <input type="email" class="form-control" id="exampleDropdownFormEmail2" placeholder="email@example.com">
+  </div>
+  <div class="form-group">
+    <label for="exampleDropdownFormPassword2">Password</label>
+    <input type="password" class="form-control" id="exampleDropdownFormPassword2" placeholder="Password">
+  </div>
+  <div class="form-check">
+    <input type="checkbox" class="form-check-input" id="dropdownCheck2">
+    <label class="form-check-label" for="dropdownCheck2">
+      Remember me
+    </label>
+  </div>
+  <button type="submit" class="btn btn-primary">Sign in</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Dropdown options
+
+Use `data-offset` or `data-reference` to change the location of the dropdown.
+
+{% capture example %}
+<div class="d-flex">
+  <div class="dropdown mr-1">
+    <button type="button" class="btn btn-secondary dropdown-toggle" id="dropdownMenuOffset" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" data-offset="10,20">
+      Offset
+    </button>
+    <div class="dropdown-menu" aria-labelledby="dropdownMenuOffset">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+    </div>
+  </div>
+  <div class="btn-group">
+    <button type="button" class="btn btn-secondary">Reference</button>
+    <button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" id="dropdownMenuReference" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" data-reference="parent">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu" aria-labelledby="dropdownMenuReference">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Usage
+
+Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the `.show` class on the parent list item. The `data-toggle="dropdown"` attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it.
+
+{% capture callout %}
+On touch-enabled devices, opening a dropdown adds empty (`$.noop`) `mouseover` handlers to the immediate children of the `<body>` element. This admittedly ugly hack is necessary to work around a [quirk in iOS' event delegation](https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html), which would otherwise prevent a tap anywhere outside of the dropdown from triggering the code that closes the dropdown. Once the dropdown is closed, these additional empty `mouseover` handlers are removed.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+### Via data attributes
+
+Add `data-toggle="dropdown"` to a link or button to toggle a dropdown.
+
+{% highlight html %}
+<div class="dropdown">
+  <button id="dLabel" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    Dropdown trigger
+  </button>
+  <div class="dropdown-menu" aria-labelledby="dLabel">
+    ...
+  </div>
+</div>
+{% endhighlight %}
+
+### Via JavaScript
+
+Call the dropdowns via JavaScript:
+
+{% highlight js %}
+$('.dropdown-toggle').dropdown()
+{% endhighlight %}
+
+{% capture callout %}
+##### `data-toggle="dropdown"` still required
+
+Regardless of whether you call your dropdown via JavaScript or instead use the data-api, `data-toggle="dropdown"` is always required to be present on the dropdown's trigger element.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+### Options
+
+Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-offset=""`.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 100px;">Name</th>
+      <th style="width: 100px;">Type</th>
+      <th style="width: 50px;">Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>offset</td>
+      <td>number | string | function</td>
+      <td>0</td>
+      <td>Offset of the dropdown relative to its target. For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..offset.offset">offset docs</a>.</td>
+    </tr>
+    <tr>
+      <td>flip</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Allow Dropdown to flip in case of an overlapping on the reference element. For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..flip.enabled">flip docs</a>.</td>
+    </tr>
+    <tr>
+      <td>boundary</td>
+      <td>string | element</td>
+      <td>'scrollParent'</td>
+      <td>Overflow constraint boundary of the dropdown menu. Accepts the values of <code>'viewport'</code>, <code>'window'</code>, <code>'scrollParent'</code>, or an HTMLElement reference (JavaScript only). For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..preventOverflow.boundariesElement">preventOverflow docs</a>.</td>
+    </tr>
+    <tr>
+      <td>reference</td>
+      <td>string | element</td>
+      <td>'toggle'</td>
+      <td>Reference element of the dropdown menu. Accepts the values of <code>'toggle'</code>, <code>'parent'</code>, or an HTMLElement reference. For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#referenceObject">referenceObject docs</a>.</td>
+    </tr>
+    <tr>
+      <td>display</td>
+      <td>string</td>
+      <td>'dynamic'</td>
+      <td>By default, we use Popper.js for dynamic positioning. Disable this with <code>static</code>.</td>
+    </tr>
+  </tbody>
+</table>
+
+Note when `boundary` is set to any value other than `'scrollParent'`, the style `position: static` is applied to the `.dropdown` container.
+
+### Methods
+
+| Method | Description |
+| --- | --- |
+| `$().dropdown('toggle')` | Toggles the dropdown menu of a given navbar or tabbed navigation. |
+| `$().dropdown('update')` | Updates the position of an element's dropdown. |
+| `$().dropdown('dispose')` | Destroys an element's dropdown. |
+
+### Events
+
+All dropdown events are fired at the `.dropdown-menu`'s parent element and have a `relatedTarget` property, whose value is the toggling anchor element.
+`hide.bs.dropdown` and `hidden.bs.dropdown` events have a `clickEvent` property (only when the original event type is `click`) that contains an Event Object for the click event.
+
+| Event | Description |
+| --- | --- |
+| `show.bs.dropdown` | This event fires immediately when the show instance method is called. |
+| `shown.bs.dropdown` | This event is fired when the dropdown has been made visible to the user (will wait for CSS transitions, to complete). |
+| `hide.bs.dropdown` | This event is fired immediately when the hide instance method has been called. |
+| `hidden.bs.dropdown`| This event is fired when the dropdown has finished being hidden from the user (will wait for CSS transitions, to complete). |
+
+{% highlight js %}
+$('#myDropdown').on('show.bs.dropdown', function () {
+  // do something…
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/forms.md b/vendor/twbs/bootstrap/site/docs/4.1/components/forms.md
new file mode 100644
index 000000000..5d3a5d2b5
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/forms.md
@@ -0,0 +1,1296 @@
+---
+layout: docs
+title: Forms
+description: Examples and usage guidelines for form control styles, layout options, and custom components for creating a wide variety of forms.
+group: components
+toc: true
+---
+
+## Overview
+
+Bootstrap's form controls expand on [our Rebooted form styles]({{ site.baseurl }}/docs/{{ site.docs_version }}/content/reboot/#forms) with classes. Use these classes to opt into their customized displays for a more consistent rendering across browsers and devices.
+
+Be sure to use an appropriate `type` attribute on all inputs (e.g., `email` for email address or `number` for numerical information) to take advantage of newer input controls like email verification, number selection, and more.
+
+Here's a quick example to demonstrate Bootstrap's form styles. Keep reading for documentation on required classes, form layout, and more.
+
+{% capture example %}
+<form>
+  <div class="form-group">
+    <label for="exampleInputEmail1">Email address</label>
+    <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp" placeholder="Enter email">
+    <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
+  </div>
+  <div class="form-group">
+    <label for="exampleInputPassword1">Password</label>
+    <input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">
+  </div>
+  <div class="form-group form-check">
+    <input type="checkbox" class="form-check-input" id="exampleCheck1">
+    <label class="form-check-label" for="exampleCheck1">Check me out</label>
+  </div>
+  <button type="submit" class="btn btn-primary">Submit</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Form controls
+
+Textual form controls—like `<input>`s, `<select>`s, and `<textarea>`s—are styled with the `.form-control` class. Included are styles for general appearance, focus state, sizing, and more.
+
+Be sure to explore our [custom forms](#custom-forms) to further style `<select>`s.
+
+{% capture example %}
+<form>
+  <div class="form-group">
+    <label for="exampleFormControlInput1">Email address</label>
+    <input type="email" class="form-control" id="exampleFormControlInput1" placeholder="name@example.com">
+  </div>
+  <div class="form-group">
+    <label for="exampleFormControlSelect1">Example select</label>
+    <select class="form-control" id="exampleFormControlSelect1">
+      <option>1</option>
+      <option>2</option>
+      <option>3</option>
+      <option>4</option>
+      <option>5</option>
+    </select>
+  </div>
+  <div class="form-group">
+    <label for="exampleFormControlSelect2">Example multiple select</label>
+    <select multiple class="form-control" id="exampleFormControlSelect2">
+      <option>1</option>
+      <option>2</option>
+      <option>3</option>
+      <option>4</option>
+      <option>5</option>
+    </select>
+  </div>
+  <div class="form-group">
+    <label for="exampleFormControlTextarea1">Example textarea</label>
+    <textarea class="form-control" id="exampleFormControlTextarea1" rows="3"></textarea>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+For file inputs, swap the `.form-control` for `.form-control-file`.
+
+{% capture example %}
+<form>
+  <div class="form-group">
+    <label for="exampleFormControlFile1">Example file input</label>
+    <input type="file" class="form-control-file" id="exampleFormControlFile1">
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Sizing
+
+Set heights using classes like `.form-control-lg` and `.form-control-sm`.
+
+{% capture example %}
+<input class="form-control form-control-lg" type="text" placeholder=".form-control-lg">
+<input class="form-control" type="text" placeholder="Default input">
+<input class="form-control form-control-sm" type="text" placeholder=".form-control-sm">
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<select class="form-control form-control-lg">
+  <option>Large select</option>
+</select>
+<select class="form-control">
+  <option>Default select</option>
+</select>
+<select class="form-control form-control-sm">
+  <option>Small select</option>
+</select>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Readonly
+
+Add the `readonly` boolean attribute on an input to prevent modification of the input's value. Read-only inputs appear lighter (just like disabled inputs), but retain the standard cursor.
+
+{% capture example %}
+<input class="form-control" type="text" placeholder="Readonly input here…" readonly>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Readonly plain text
+
+If you want to have `<input readonly>` elements in your form styled as plain text, use the `.form-control-plaintext` class to remove the default form field styling and preserve the correct margin and padding.
+
+{% capture example %}
+<form>
+  <div class="form-group row">
+    <label for="staticEmail" class="col-sm-2 col-form-label">Email</label>
+    <div class="col-sm-10">
+      <input type="text" readonly class="form-control-plaintext" id="staticEmail" value="email@example.com">
+    </div>
+  </div>
+  <div class="form-group row">
+    <label for="inputPassword" class="col-sm-2 col-form-label">Password</label>
+    <div class="col-sm-10">
+      <input type="password" class="form-control" id="inputPassword" placeholder="Password">
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<form class="form-inline">
+  <div class="form-group mb-2">
+    <label for="staticEmail2" class="sr-only">Email</label>
+    <input type="text" readonly class="form-control-plaintext" id="staticEmail2" value="email@example.com">
+  </div>
+  <div class="form-group mx-sm-3 mb-2">
+    <label for="inputPassword2" class="sr-only">Password</label>
+    <input type="password" class="form-control" id="inputPassword2" placeholder="Password">
+  </div>
+  <button type="submit" class="btn btn-primary mb-2">Confirm identity</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Range Inputs
+
+Set horizontally scrollable range inputs using `.form-control-range`.
+
+{% capture example %}
+<form>
+  <div class="form-group">
+    <label for="formControlRange">Example Range input</label>
+    <input type="range" class="form-control-range" id="formControlRange">
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Checkboxes and radios
+
+Default checkboxes and radios are improved upon with the help of `.form-check`, **a single class for both input types that improves the layout and behavior of their HTML elements**. Checkboxes are for selecting one or several options in a list, while radios are for selecting one option from many.
+
+Disabled checkboxes and radios are supported, but to provide a `not-allowed` cursor on hover of the parent `<label>`, you'll need to add the `disabled` attribute to the `.form-check-input`. The disabled attribute will apply a lighter color to help indicate the input's state.
+
+Checkboxes and radios use are built to support HTML-based form validation and provide concise, accessible labels. As such, our `<input>`s and `<label>`s are sibling elements as opposed to an `<input>` within a `<label>`. This is slightly more verbose as you must specify `id` and `for` attributes to relate the `<input>` and `<label>`.
+
+### Default (stacked)
+
+By default, any number of checkboxes and radios that are immediate sibling will be vertically stacked and appropriately spaced with `.form-check`.
+
+{% capture example %}
+<div class="form-check">
+  <input class="form-check-input" type="checkbox" value="" id="defaultCheck1">
+  <label class="form-check-label" for="defaultCheck1">
+    Default checkbox
+  </label>
+</div>
+<div class="form-check">
+  <input class="form-check-input" type="checkbox" value="" id="defaultCheck2" disabled>
+  <label class="form-check-label" for="defaultCheck2">
+    Disabled checkbox
+  </label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="form-check">
+  <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios1" value="option1" checked>
+  <label class="form-check-label" for="exampleRadios1">
+    Default radio
+  </label>
+</div>
+<div class="form-check">
+  <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios2" value="option2">
+  <label class="form-check-label" for="exampleRadios2">
+    Second default radio
+  </label>
+</div>
+<div class="form-check">
+  <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios3" value="option3" disabled>
+  <label class="form-check-label" for="exampleRadios3">
+    Disabled radio
+  </label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Inline
+
+Group checkboxes or radios on the same horizontal row by adding `.form-check-inline` to any `.form-check`.
+
+{% capture example %}
+<div class="form-check form-check-inline">
+  <input class="form-check-input" type="checkbox" id="inlineCheckbox1" value="option1">
+  <label class="form-check-label" for="inlineCheckbox1">1</label>
+</div>
+<div class="form-check form-check-inline">
+  <input class="form-check-input" type="checkbox" id="inlineCheckbox2" value="option2">
+  <label class="form-check-label" for="inlineCheckbox2">2</label>
+</div>
+<div class="form-check form-check-inline">
+  <input class="form-check-input" type="checkbox" id="inlineCheckbox3" value="option3" disabled>
+  <label class="form-check-label" for="inlineCheckbox3">3 (disabled)</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="form-check form-check-inline">
+  <input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio1" value="option1">
+  <label class="form-check-label" for="inlineRadio1">1</label>
+</div>
+<div class="form-check form-check-inline">
+  <input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio2" value="option2">
+  <label class="form-check-label" for="inlineRadio2">2</label>
+</div>
+<div class="form-check form-check-inline">
+  <input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio3" value="option3" disabled>
+  <label class="form-check-label" for="inlineRadio3">3 (disabled)</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Without labels
+
+Add `.position-static` to inputs within `.form-check` that don't have any label text. Remember to still provide some form of label for assistive technologies (for instance, using `aria-label`).
+
+{% capture example %}
+<div class="form-check">
+  <input class="form-check-input position-static" type="checkbox" id="blankCheckbox" value="option1" aria-label="...">
+</div>
+<div class="form-check">
+  <input class="form-check-input position-static" type="radio" name="blankRadio" id="blankRadio1" value="option1" aria-label="...">
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Layout
+
+Since Bootstrap applies `display: block` and `width: 100%` to almost all our form controls, forms will by default stack vertically. Additional classes can be used to vary this layout on a per-form basis.
+
+### Form groups
+
+The `.form-group` class is the easiest way to add some structure to forms. It provides a flexible class that encourages proper grouping of labels, controls, optional help text, and form validation messaging. By default it only applies `margin-bottom`, but it picks up additional styles in `.form-inline` as needed. Use it with `<fieldset>`s, `<div>`s, or nearly any other element.
+
+{% capture example %}
+<form>
+  <div class="form-group">
+    <label for="formGroupExampleInput">Example label</label>
+    <input type="text" class="form-control" id="formGroupExampleInput" placeholder="Example input">
+  </div>
+  <div class="form-group">
+    <label for="formGroupExampleInput2">Another label</label>
+    <input type="text" class="form-control" id="formGroupExampleInput2" placeholder="Another input">
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Form grid
+
+More complex forms can be built using our grid classes. Use these for form layouts that require multiple columns, varied widths, and additional alignment options.
+
+{% capture example %}
+<form>
+  <div class="row">
+    <div class="col">
+      <input type="text" class="form-control" placeholder="First name">
+    </div>
+    <div class="col">
+      <input type="text" class="form-control" placeholder="Last name">
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+#### Form row
+
+You may also swap `.row` for `.form-row`, a variation of our standard grid row that overrides the default column gutters for tighter and more compact layouts.
+
+{% capture example %}
+<form>
+  <div class="form-row">
+    <div class="col">
+      <input type="text" class="form-control" placeholder="First name">
+    </div>
+    <div class="col">
+      <input type="text" class="form-control" placeholder="Last name">
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+More complex layouts can also be created with the grid system.
+
+{% capture example %}
+<form>
+  <div class="form-row">
+    <div class="form-group col-md-6">
+      <label for="inputEmail4">Email</label>
+      <input type="email" class="form-control" id="inputEmail4" placeholder="Email">
+    </div>
+    <div class="form-group col-md-6">
+      <label for="inputPassword4">Password</label>
+      <input type="password" class="form-control" id="inputPassword4" placeholder="Password">
+    </div>
+  </div>
+  <div class="form-group">
+    <label for="inputAddress">Address</label>
+    <input type="text" class="form-control" id="inputAddress" placeholder="1234 Main St">
+  </div>
+  <div class="form-group">
+    <label for="inputAddress2">Address 2</label>
+    <input type="text" class="form-control" id="inputAddress2" placeholder="Apartment, studio, or floor">
+  </div>
+  <div class="form-row">
+    <div class="form-group col-md-6">
+      <label for="inputCity">City</label>
+      <input type="text" class="form-control" id="inputCity">
+    </div>
+    <div class="form-group col-md-4">
+      <label for="inputState">State</label>
+      <select id="inputState" class="form-control">
+        <option selected>Choose...</option>
+        <option>...</option>
+      </select>
+    </div>
+    <div class="form-group col-md-2">
+      <label for="inputZip">Zip</label>
+      <input type="text" class="form-control" id="inputZip">
+    </div>
+  </div>
+  <div class="form-group">
+    <div class="form-check">
+      <input class="form-check-input" type="checkbox" id="gridCheck">
+      <label class="form-check-label" for="gridCheck">
+        Check me out
+      </label>
+    </div>
+  </div>
+  <button type="submit" class="btn btn-primary">Sign in</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+#### Horizontal form
+
+Create horizontal forms with the grid by adding the `.row` class to form groups and using the `.col-*-*` classes to specify the width of your labels and controls. Be sure to add `.col-form-label` to your `<label>`s as well so they're vertically centered with their associated form controls.
+
+At times, you maybe need to use margin or padding utilities to create that perfect alignment you need. For example, we've removed the `padding-top` on our stacked radio inputs label to better align the text baseline.
+
+{% capture example %}
+<form>
+  <div class="form-group row">
+    <label for="inputEmail3" class="col-sm-2 col-form-label">Email</label>
+    <div class="col-sm-10">
+      <input type="email" class="form-control" id="inputEmail3" placeholder="Email">
+    </div>
+  </div>
+  <div class="form-group row">
+    <label for="inputPassword3" class="col-sm-2 col-form-label">Password</label>
+    <div class="col-sm-10">
+      <input type="password" class="form-control" id="inputPassword3" placeholder="Password">
+    </div>
+  </div>
+  <fieldset class="form-group">
+    <div class="row">
+      <legend class="col-form-label col-sm-2 pt-0">Radios</legend>
+      <div class="col-sm-10">
+        <div class="form-check">
+          <input class="form-check-input" type="radio" name="gridRadios" id="gridRadios1" value="option1" checked>
+          <label class="form-check-label" for="gridRadios1">
+            First radio
+          </label>
+        </div>
+        <div class="form-check">
+          <input class="form-check-input" type="radio" name="gridRadios" id="gridRadios2" value="option2">
+          <label class="form-check-label" for="gridRadios2">
+            Second radio
+          </label>
+        </div>
+        <div class="form-check disabled">
+          <input class="form-check-input" type="radio" name="gridRadios" id="gridRadios3" value="option3" disabled>
+          <label class="form-check-label" for="gridRadios3">
+            Third disabled radio
+          </label>
+        </div>
+      </div>
+    </div>
+  </fieldset>
+  <div class="form-group row">
+    <div class="col-sm-2">Checkbox</div>
+    <div class="col-sm-10">
+      <div class="form-check">
+        <input class="form-check-input" type="checkbox" id="gridCheck1">
+        <label class="form-check-label" for="gridCheck1">
+          Example checkbox
+        </label>
+      </div>
+    </div>
+  </div>
+  <div class="form-group row">
+    <div class="col-sm-10">
+      <button type="submit" class="btn btn-primary">Sign in</button>
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+##### Horizontal form label sizing
+
+Be sure to use `.col-form-label-sm` or `.col-form-label-lg` to your `<label>`s or `<legend>`s to correctly follow the size of `.form-control-lg` and `.form-control-sm`.
+
+{% capture example %}
+<form>
+  <div class="form-group row">
+    <label for="colFormLabelSm" class="col-sm-2 col-form-label col-form-label-sm">Email</label>
+    <div class="col-sm-10">
+      <input type="email" class="form-control form-control-sm" id="colFormLabelSm" placeholder="col-form-label-sm">
+    </div>
+  </div>
+  <div class="form-group row">
+    <label for="colFormLabel" class="col-sm-2 col-form-label">Email</label>
+    <div class="col-sm-10">
+      <input type="email" class="form-control" id="colFormLabel" placeholder="col-form-label">
+    </div>
+  </div>
+  <div class="form-group row">
+    <label for="colFormLabelLg" class="col-sm-2 col-form-label col-form-label-lg">Email</label>
+    <div class="col-sm-10">
+      <input type="email" class="form-control form-control-lg" id="colFormLabelLg" placeholder="col-form-label-lg">
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+#### Column sizing
+
+As shown in the previous examples, our grid system allows you to place any number of `.col`s within a `.row` or `.form-row`. They'll split the available width equally between them. You may also pick a subset of your columns to take up more or less space, while the remaining `.col`s equally split the rest, with specific column classes like `.col-7`.
+
+{% capture example %}
+<form>
+  <div class="form-row">
+    <div class="col-7">
+      <input type="text" class="form-control" placeholder="City">
+    </div>
+    <div class="col">
+      <input type="text" class="form-control" placeholder="State">
+    </div>
+    <div class="col">
+      <input type="text" class="form-control" placeholder="Zip">
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+#### Auto-sizing
+
+The example below uses a flexbox utility to vertically center the contents and changes `.col` to `.col-auto` so that your columns only take up as much space as needed. Put another way, the column sizes itself based on the contents.
+
+{% capture example %}
+<form>
+  <div class="form-row align-items-center">
+    <div class="col-auto">
+      <label class="sr-only" for="inlineFormInput">Name</label>
+      <input type="text" class="form-control mb-2" id="inlineFormInput" placeholder="Jane Doe">
+    </div>
+    <div class="col-auto">
+      <label class="sr-only" for="inlineFormInputGroup">Username</label>
+      <div class="input-group mb-2">
+        <div class="input-group-prepend">
+          <div class="input-group-text">@</div>
+        </div>
+        <input type="text" class="form-control" id="inlineFormInputGroup" placeholder="Username">
+      </div>
+    </div>
+    <div class="col-auto">
+      <div class="form-check mb-2">
+        <input class="form-check-input" type="checkbox" id="autoSizingCheck">
+        <label class="form-check-label" for="autoSizingCheck">
+          Remember me
+        </label>
+      </div>
+    </div>
+    <div class="col-auto">
+      <button type="submit" class="btn btn-primary mb-2">Submit</button>
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+You can then remix that once again with size-specific column classes.
+
+{% capture example %}
+<form>
+  <div class="form-row align-items-center">
+    <div class="col-sm-3 my-1">
+      <label class="sr-only" for="inlineFormInputName">Name</label>
+      <input type="text" class="form-control" id="inlineFormInputName" placeholder="Jane Doe">
+    </div>
+    <div class="col-sm-3 my-1">
+      <label class="sr-only" for="inlineFormInputGroupUsername">Username</label>
+      <div class="input-group">
+        <div class="input-group-prepend">
+          <div class="input-group-text">@</div>
+        </div>
+        <input type="text" class="form-control" id="inlineFormInputGroupUsername" placeholder="Username">
+      </div>
+    </div>
+    <div class="col-auto my-1">
+      <div class="form-check">
+        <input class="form-check-input" type="checkbox" id="autoSizingCheck2">
+        <label class="form-check-label" for="autoSizingCheck2">
+          Remember me
+        </label>
+      </div>
+    </div>
+    <div class="col-auto my-1">
+      <button type="submit" class="btn btn-primary">Submit</button>
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+And of course [custom form controls](#custom-forms) are supported.
+
+{% capture example %}
+<form>
+  <div class="form-row align-items-center">
+    <div class="col-auto my-1">
+      <label class="mr-sm-2 sr-only" for="inlineFormCustomSelect">Preference</label>
+      <select class="custom-select mr-sm-2" id="inlineFormCustomSelect">
+        <option selected>Choose...</option>
+        <option value="1">One</option>
+        <option value="2">Two</option>
+        <option value="3">Three</option>
+      </select>
+    </div>
+    <div class="col-auto my-1">
+      <div class="custom-control custom-checkbox mr-sm-2">
+        <input type="checkbox" class="custom-control-input" id="customControlAutosizing">
+        <label class="custom-control-label" for="customControlAutosizing">Remember my preference</label>
+      </div>
+    </div>
+    <div class="col-auto my-1">
+      <button type="submit" class="btn btn-primary">Submit</button>
+    </div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Inline forms
+
+Use the `.form-inline` class to display a series of labels, form controls, and buttons on a single horizontal row. Form controls within inline forms vary slightly from their default states.
+
+- Controls are `display: flex`, collapsing any HTML white space and allowing you to provide alignment control with [spacing]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) and [flexbox]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/) utilities.
+- Controls and input groups receive `width: auto` to override the Bootstrap default `width: 100%`.
+- Controls **only appear inline in viewports that are at least 576px wide** to account for narrow viewports on mobile devices.
+
+You may need to manually address the width and alignment of individual form controls with [spacing utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) (as shown below). Lastly, be sure to always include a `<label>` with each form control, even if you need to hide it from non-screenreader visitors with `.sr-only`.
+
+{% capture example %}
+<form class="form-inline">
+  <label class="sr-only" for="inlineFormInputName2">Name</label>
+  <input type="text" class="form-control mb-2 mr-sm-2" id="inlineFormInputName2" placeholder="Jane Doe">
+
+  <label class="sr-only" for="inlineFormInputGroupUsername2">Username</label>
+  <div class="input-group mb-2 mr-sm-2">
+    <div class="input-group-prepend">
+      <div class="input-group-text">@</div>
+    </div>
+    <input type="text" class="form-control" id="inlineFormInputGroupUsername2" placeholder="Username">
+  </div>
+
+  <div class="form-check mb-2 mr-sm-2">
+    <input class="form-check-input" type="checkbox" id="inlineFormCheck">
+    <label class="form-check-label" for="inlineFormCheck">
+      Remember me
+    </label>
+  </div>
+
+  <button type="submit" class="btn btn-primary mb-2">Submit</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+Custom form controls and selects are also supported.
+
+{% capture example %}
+<form class="form-inline">
+  <label class="my-1 mr-2" for="inlineFormCustomSelectPref">Preference</label>
+  <select class="custom-select my-1 mr-sm-2" id="inlineFormCustomSelectPref">
+    <option selected>Choose...</option>
+    <option value="1">One</option>
+    <option value="2">Two</option>
+    <option value="3">Three</option>
+  </select>
+
+  <div class="custom-control custom-checkbox my-1 mr-sm-2">
+    <input type="checkbox" class="custom-control-input" id="customControlInline">
+    <label class="custom-control-label" for="customControlInline">Remember my preference</label>
+  </div>
+
+  <button type="submit" class="btn btn-primary my-1">Submit</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture callout %}
+##### Alternatives to hidden labels
+Assistive technologies such as screen readers will have trouble with your forms if you don't include a label for every input. For these inline forms, you can hide the labels using the `.sr-only` class. There are further alternative methods of providing a label for assistive technologies, such as the `aria-label`, `aria-labelledby` or `title` attribute. If none of these are present, assistive technologies may resort to using the `placeholder` attribute, if present, but note that use of `placeholder` as a replacement for other labelling methods is not advised.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+## Help text
+
+Block-level help text in forms can be created using `.form-text` (previously known as `.help-block` in v3). Inline help text can be flexibly implemented using any inline HTML element and utility classes like `.text-muted`.
+
+{% capture callout %}
+##### Associating help text with form controls
+
+Help text should be explicitly associated with the form control it relates to using the `aria-describedby` attribute. This will ensure that assistive technologies—such as screen readers—will announce this help text when the user focuses or enters the control.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+Help text below inputs can be styled with `.form-text`. This class includes `display: block` and adds some top margin for easy spacing from the inputs above.
+
+{% capture example %}
+<label for="inputPassword5">Password</label>
+<input type="password" id="inputPassword5" class="form-control" aria-describedby="passwordHelpBlock">
+<small id="passwordHelpBlock" class="form-text text-muted">
+  Your password must be 8-20 characters long, contain letters and numbers, and must not contain spaces, special characters, or emoji.
+</small>
+{% endcapture %}
+{% include example.html content=example %}
+
+Inline text can use any typical inline HTML element (be it a `<small>`, `<span>`, or something else) with nothing more than a utility class.
+
+{% capture example %}
+<form class="form-inline">
+  <div class="form-group">
+    <label for="inputPassword6">Password</label>
+    <input type="password" id="inputPassword6" class="form-control mx-sm-3" aria-describedby="passwordHelpInline">
+    <small id="passwordHelpInline" class="text-muted">
+      Must be 8-20 characters long.
+    </small>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Disabled forms
+
+Add the `disabled` boolean attribute on an input to prevent user interactions and make it appear lighter.
+
+{% highlight html %}
+<input class="form-control" id="disabledInput" type="text" placeholder="Disabled input here..." disabled>
+{% endhighlight %}
+
+Add the `disabled` attribute to a `<fieldset>` to disable all the controls within.
+
+{% capture example %}
+<form>
+  <fieldset disabled>
+    <div class="form-group">
+      <label for="disabledTextInput">Disabled input</label>
+      <input type="text" id="disabledTextInput" class="form-control" placeholder="Disabled input">
+    </div>
+    <div class="form-group">
+      <label for="disabledSelect">Disabled select menu</label>
+      <select id="disabledSelect" class="form-control">
+        <option>Disabled select</option>
+      </select>
+    </div>
+    <div class="form-check">
+      <input class="form-check-input" type="checkbox" id="disabledFieldsetCheck" disabled>
+      <label class="form-check-label" for="disabledFieldsetCheck">
+        Can't check this
+      </label>
+    </div>
+    <button type="submit" class="btn btn-primary">Submit</button>
+  </fieldset>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture callout %}
+##### Caveat with anchors
+
+By default, browsers will treat all native form controls (`<input>`, `<select>` and `<button>` elements) inside a `<fieldset disabled>` as disabled, preventing both keyboard and mouse interactions on them. However, if your form also includes `<a ... class="btn btn-*">` elements, these will only be given a style of `pointer-events: none`. As noted in the section about [disabled state for buttons]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/buttons/#disabled-state) (and specifically in the sub-section for anchor elements), this CSS property is not yet standardized and isn't fully supported in Internet Explorer 10, and won't prevent keyboard users from being able to focus or activate these links. So to be safe, use custom JavaScript to disable such links.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+{% capture callout %}
+#### Cross-browser compatibility
+
+While Bootstrap will apply these styles in all browsers, Internet Explorer 11 and below don't fully support the `disabled` attribute on a `<fieldset>`. Use custom JavaScript to disable the fieldset in these browsers.
+{% endcapture %}
+{% include callout.html content=callout type="danger" %}
+
+## Validation
+
+Provide valuable, actionable feedback to your users with HTML5 form validation–[available in all our supported browsers](https://caniuse.com/#feat=form-validation). Choose from the browser default validation feedback, or implement custom messages with our built-in classes and starter JavaScript.
+
+{% capture callout %}
+We currently recommend using custom validation styles, as native browser default validation messages are not consistently exposed to assistive technologies in all browsers (most notably, Chrome on desktop and mobile).
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+### How it works
+
+Here's how form validation works with Bootstrap:
+
+- HTML form validation is applied via CSS's two pseudo-classes, `:invalid` and `:valid`. It applies to `<input>`, `<select>`, and `<textarea>` elements.
+- Bootstrap scopes the `:invalid` and `:valid` styles to parent `.was-validated` class, usually applied to the `<form>`. Otherwise, any required field without a value shows up as invalid on page load. This way, you may choose when to activate them (typically after form submission is attempted).
+- To reset the appearance of the form (for instance, in the case of dynamic form submissions using AJAX), remove the `.was-validated` class from the `<form>` again after submission.
+- As a fallback, `.is-invalid` and `.is-valid` classes may be used instead of the pseudo-classes for [server side validation](#server-side). They do not require a `.was-validated` parent class.
+- Due to constraints in how CSS works, we cannot (at present) apply styles to a `<label>` that comes before a form control in the DOM without the help of custom JavaScript.
+- All modern browsers support the [constraint validation API](https://www.w3.org/TR/html5/sec-forms.html#the-constraint-validation-api), a series of JavaScript methods for validating form controls.
+- Feedback messages may utilize the [browser defaults](#browser-defaults) (different for each browser, and unstylable via CSS) or our custom feedback styles with additional HTML and CSS.
+- You may provide custom validity messages with `setCustomValidity` in JavaScript.
+
+With that in mind, consider the following demos for our custom form validation styles, optional server side classes, and browser defaults.
+
+### Custom styles
+
+For custom Bootstrap form validation messages, you'll need to add the `novalidate` boolean attribute to your `<form>`. This disables the browser default feedback tooltips, but still provides access to the form validation APIs in JavaScript. Try to submit the form below; our JavaScript will intercept the submit button and relay feedback to you.
+
+When attempting to submit, you'll see the `:invalid` and `:valid` styles applied to your form controls.
+
+{% capture example %}
+<form class="needs-validation" novalidate>
+  <div class="form-row">
+    <div class="col-md-4 mb-3">
+      <label for="validationCustom01">First name</label>
+      <input type="text" class="form-control" id="validationCustom01" placeholder="First name" value="Mark" required>
+      <div class="valid-feedback">
+        Looks good!
+      </div>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationCustom02">Last name</label>
+      <input type="text" class="form-control" id="validationCustom02" placeholder="Last name" value="Otto" required>
+      <div class="valid-feedback">
+        Looks good!
+      </div>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationCustomUsername">Username</label>
+      <div class="input-group">
+        <div class="input-group-prepend">
+          <span class="input-group-text" id="inputGroupPrepend">@</span>
+        </div>
+        <input type="text" class="form-control" id="validationCustomUsername" placeholder="Username" aria-describedby="inputGroupPrepend" required>
+        <div class="invalid-feedback">
+          Please choose a username.
+        </div>
+      </div>
+    </div>
+  </div>
+  <div class="form-row">
+    <div class="col-md-6 mb-3">
+      <label for="validationCustom03">City</label>
+      <input type="text" class="form-control" id="validationCustom03" placeholder="City" required>
+      <div class="invalid-feedback">
+        Please provide a valid city.
+      </div>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationCustom04">State</label>
+      <input type="text" class="form-control" id="validationCustom04" placeholder="State" required>
+      <div class="invalid-feedback">
+        Please provide a valid state.
+      </div>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationCustom05">Zip</label>
+      <input type="text" class="form-control" id="validationCustom05" placeholder="Zip" required>
+      <div class="invalid-feedback">
+        Please provide a valid zip.
+      </div>
+    </div>
+  </div>
+  <div class="form-group">
+    <div class="form-check">
+      <input class="form-check-input" type="checkbox" value="" id="invalidCheck" required>
+      <label class="form-check-label" for="invalidCheck">
+        Agree to terms and conditions
+      </label>
+      <div class="invalid-feedback">
+        You must agree before submitting.
+      </div>
+    </div>
+  </div>
+  <button class="btn btn-primary" type="submit">Submit form</button>
+</form>
+
+<script>
+// Example starter JavaScript for disabling form submissions if there are invalid fields
+(function() {
+  'use strict';
+  window.addEventListener('load', function() {
+    // Fetch all the forms we want to apply custom Bootstrap validation styles to
+    var forms = document.getElementsByClassName('needs-validation');
+    // Loop over them and prevent submission
+    var validation = Array.prototype.filter.call(forms, function(form) {
+      form.addEventListener('submit', function(event) {
+        if (form.checkValidity() === false) {
+          event.preventDefault();
+          event.stopPropagation();
+        }
+        form.classList.add('was-validated');
+      }, false);
+    });
+  }, false);
+})();
+</script>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Browser defaults
+
+Not interested in custom validation feedback messages or writing JavaScript to change form behaviors? All good, you can use the browser defaults. Try submitting the form below. Depending on your browser and OS, you'll see a slightly different style of feedback.
+
+While these feedback styles cannot be styled with CSS, you can still customize the feedback text through JavaScript.
+
+{% capture example %}
+<form>
+  <div class="form-row">
+    <div class="col-md-4 mb-3">
+      <label for="validationDefault01">First name</label>
+      <input type="text" class="form-control" id="validationDefault01" placeholder="First name" value="Mark" required>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationDefault02">Last name</label>
+      <input type="text" class="form-control" id="validationDefault02" placeholder="Last name" value="Otto" required>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationDefaultUsername">Username</label>
+      <div class="input-group">
+        <div class="input-group-prepend">
+          <span class="input-group-text" id="inputGroupPrepend2">@</span>
+        </div>
+        <input type="text" class="form-control" id="validationDefaultUsername" placeholder="Username" aria-describedby="inputGroupPrepend2" required>
+      </div>
+    </div>
+  </div>
+  <div class="form-row">
+    <div class="col-md-6 mb-3">
+      <label for="validationDefault03">City</label>
+      <input type="text" class="form-control" id="validationDefault03" placeholder="City" required>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationDefault04">State</label>
+      <input type="text" class="form-control" id="validationDefault04" placeholder="State" required>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationDefault05">Zip</label>
+      <input type="text" class="form-control" id="validationDefault05" placeholder="Zip" required>
+    </div>
+  </div>
+  <div class="form-group">
+    <div class="form-check">
+      <input class="form-check-input" type="checkbox" value="" id="invalidCheck2" required>
+      <label class="form-check-label" for="invalidCheck2">
+        Agree to terms and conditions
+      </label>
+    </div>
+  </div>
+  <button class="btn btn-primary" type="submit">Submit form</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Server side
+
+We recommend using client side validation, but in case you require server side, you can indicate invalid and valid form fields with `.is-invalid` and `.is-valid`. Note that `.invalid-feedback` is also supported with these classes.
+
+{% capture example %}
+<form>
+  <div class="form-row">
+    <div class="col-md-4 mb-3">
+      <label for="validationServer01">First name</label>
+      <input type="text" class="form-control is-valid" id="validationServer01" placeholder="First name" value="Mark" required>
+      <div class="valid-feedback">
+        Looks good!
+      </div>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationServer02">Last name</label>
+      <input type="text" class="form-control is-valid" id="validationServer02" placeholder="Last name" value="Otto" required>
+      <div class="valid-feedback">
+        Looks good!
+      </div>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationServerUsername">Username</label>
+      <div class="input-group">
+        <div class="input-group-prepend">
+          <span class="input-group-text" id="inputGroupPrepend3">@</span>
+        </div>
+        <input type="text" class="form-control is-invalid" id="validationServerUsername" placeholder="Username" aria-describedby="inputGroupPrepend3" required>
+        <div class="invalid-feedback">
+          Please choose a username.
+        </div>
+      </div>
+    </div>
+  </div>
+  <div class="form-row">
+    <div class="col-md-6 mb-3">
+      <label for="validationServer03">City</label>
+      <input type="text" class="form-control is-invalid" id="validationServer03" placeholder="City" required>
+      <div class="invalid-feedback">
+        Please provide a valid city.
+      </div>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationServer04">State</label>
+      <input type="text" class="form-control is-invalid" id="validationServer04" placeholder="State" required>
+      <div class="invalid-feedback">
+        Please provide a valid state.
+      </div>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationServer05">Zip</label>
+      <input type="text" class="form-control is-invalid" id="validationServer05" placeholder="Zip" required>
+      <div class="invalid-feedback">
+        Please provide a valid zip.
+      </div>
+    </div>
+  </div>
+  <div class="form-group">
+    <div class="form-check">
+      <input class="form-check-input is-invalid" type="checkbox" value="" id="invalidCheck3" required>
+      <label class="form-check-label" for="invalidCheck3">
+        Agree to terms and conditions
+      </label>
+      <div class="invalid-feedback">
+        You must agree before submitting.
+      </div>
+    </div>
+  </div>
+  <button class="btn btn-primary" type="submit">Submit form</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Supported elements
+
+Our example forms show native textual `<input>`s above, but form validation styles are available for our custom form controls, too.
+
+{% capture example %}
+<form class="was-validated">
+  <div class="custom-control custom-checkbox mb-3">
+    <input type="checkbox" class="custom-control-input" id="customControlValidation1" required>
+    <label class="custom-control-label" for="customControlValidation1">Check this custom checkbox</label>
+    <div class="invalid-feedback">Example invalid feedback text</div>
+  </div>
+
+  <div class="custom-control custom-radio">
+    <input type="radio" class="custom-control-input" id="customControlValidation2" name="radio-stacked" required>
+    <label class="custom-control-label" for="customControlValidation2">Toggle this custom radio</label>
+  </div>
+  <div class="custom-control custom-radio mb-3">
+    <input type="radio" class="custom-control-input" id="customControlValidation3" name="radio-stacked" required>
+    <label class="custom-control-label" for="customControlValidation3">Or toggle this other custom radio</label>
+    <div class="invalid-feedback">More example invalid feedback text</div>
+  </div>
+
+  <div class="form-group">
+    <select class="custom-select" required>
+      <option value="">Open this select menu</option>
+      <option value="1">One</option>
+      <option value="2">Two</option>
+      <option value="3">Three</option>
+    </select>
+    <div class="invalid-feedback">Example invalid custom select feedback</div>
+  </div>
+
+  <div class="custom-file">
+    <input type="file" class="custom-file-input" id="validatedCustomFile" required>
+    <label class="custom-file-label" for="validatedCustomFile">Choose file...</label>
+    <div class="invalid-feedback">Example invalid custom file feedback</div>
+  </div>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Tooltips
+
+If your form layout allows it, you can swap the `.{valid|invalid}-feedback` classes for `.{valid|invalid}-tooltip` classes to display validation feedback in a styled tooltip. Be sure to have a parent with `position: relative` on it for tooltip positioning. In the example below, our column classes have this already, but your project may require an alternative setup.
+
+{% capture example %}
+<form class="needs-validation" novalidate>
+  <div class="form-row">
+    <div class="col-md-4 mb-3">
+      <label for="validationTooltip01">First name</label>
+      <input type="text" class="form-control" id="validationTooltip01" placeholder="First name" value="Mark" required>
+      <div class="valid-tooltip">
+        Looks good!
+      </div>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationTooltip02">Last name</label>
+      <input type="text" class="form-control" id="validationTooltip02" placeholder="Last name" value="Otto" required>
+      <div class="valid-tooltip">
+        Looks good!
+      </div>
+    </div>
+    <div class="col-md-4 mb-3">
+      <label for="validationTooltipUsername">Username</label>
+      <div class="input-group">
+        <div class="input-group-prepend">
+          <span class="input-group-text" id="validationTooltipUsernamePrepend">@</span>
+        </div>
+        <input type="text" class="form-control" id="validationTooltipUsername" placeholder="Username" aria-describedby="validationTooltipUsernamePrepend" required>
+        <div class="invalid-tooltip">
+          Please choose a unique and valid username.
+        </div>
+      </div>
+    </div>
+  </div>
+  <div class="form-row">
+    <div class="col-md-6 mb-3">
+      <label for="validationTooltip03">City</label>
+      <input type="text" class="form-control" id="validationTooltip03" placeholder="City" required>
+      <div class="invalid-tooltip">
+        Please provide a valid city.
+      </div>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationTooltip04">State</label>
+      <input type="text" class="form-control" id="validationTooltip04" placeholder="State" required>
+      <div class="invalid-tooltip">
+        Please provide a valid state.
+      </div>
+    </div>
+    <div class="col-md-3 mb-3">
+      <label for="validationTooltip05">Zip</label>
+      <input type="text" class="form-control" id="validationTooltip05" placeholder="Zip" required>
+      <div class="invalid-tooltip">
+        Please provide a valid zip.
+      </div>
+    </div>
+  </div>
+  <button class="btn btn-primary" type="submit">Submit form</button>
+</form>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Custom forms
+
+For even more customization and cross browser consistency, use our completely custom form elements to replace the browser defaults. They're built on top of semantic and accessible markup, so they're solid replacements for any default form control.
+
+### Checkboxes and radios
+
+Each checkbox and radio is wrapped in a `<div>` with a sibling `<span>` to create our custom control and a `<label>` for the accompanying text. Structurally, this is the same approach as our default `.form-check`.
+
+We use the sibling selector (`~`) for all our `<input>` states—like `:checked`—to properly style our custom form indicator. When combined with the `.custom-control-label` class, we can also style the text for each item based on the `<input>`'s state.
+
+We hide the default `<input>` with `opacity` and use the `.custom-control-label` to build a new custom form indicator in its place with `::before` and `::after`. Unfortunately we can't build a custom one from just the `<input>` because CSS's `content` doesn't work on that element.
+
+In the checked states, we use **base64 embedded SVG icons** from [Open Iconic](https://useiconic.com/open). This provides us the best control for styling and positioning across browsers and devices.
+
+#### Checkboxes
+
+{% capture example %}
+<div class="custom-control custom-checkbox">
+  <input type="checkbox" class="custom-control-input" id="customCheck1">
+  <label class="custom-control-label" for="customCheck1">Check this custom checkbox</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Custom checkboxes can also utilize the `:indeterminate` pseudo class when manually set via JavaScript (there is no available HTML attribute for specifying it).
+
+<div class="bd-example bd-example-indeterminate">
+  <div class="custom-control custom-checkbox">
+    <input type="checkbox" class="custom-control-input" id="customCheck2">
+    <label class="custom-control-label" for="customCheck2">Check this custom checkbox</label>
+  </div>
+</div>
+
+If you're using jQuery, something like this should suffice:
+
+{% highlight js %}
+$('.your-checkbox').prop('indeterminate', true)
+{% endhighlight %}
+
+#### Radios
+
+{% capture example %}
+<div class="custom-control custom-radio">
+  <input type="radio" id="customRadio1" name="customRadio" class="custom-control-input">
+  <label class="custom-control-label" for="customRadio1">Toggle this custom radio</label>
+</div>
+<div class="custom-control custom-radio">
+  <input type="radio" id="customRadio2" name="customRadio" class="custom-control-input">
+  <label class="custom-control-label" for="customRadio2">Or toggle this other custom radio</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+#### Inline
+
+{% capture example %}
+<div class="custom-control custom-radio custom-control-inline">
+  <input type="radio" id="customRadioInline1" name="customRadioInline1" class="custom-control-input">
+  <label class="custom-control-label" for="customRadioInline1">Toggle this custom radio</label>
+</div>
+<div class="custom-control custom-radio custom-control-inline">
+  <input type="radio" id="customRadioInline2" name="customRadioInline1" class="custom-control-input">
+  <label class="custom-control-label" for="customRadioInline2">Or toggle this other custom radio</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+#### Disabled
+
+Custom checkboxes and radios can also be disabled. Add the `disabled` boolean attribute to the `<input>` and the custom indicator and label description will be automatically styled.
+
+{% capture example %}
+<div class="custom-control custom-checkbox">
+  <input type="checkbox" class="custom-control-input" id="customCheckDisabled" disabled>
+  <label class="custom-control-label" for="customCheckDisabled">Check this custom checkbox</label>
+</div>
+
+<div class="custom-control custom-radio">
+  <input type="radio" id="radio3" name="radioDisabled" id="customRadioDisabled" class="custom-control-input" disabled>
+  <label class="custom-control-label" for="customRadioDisabled">Toggle this custom radio</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Select menu
+
+Custom `<select>` menus need only a custom class, `.custom-select` to trigger the custom styles. Custom styles are limited to the `<select>`'s initial appearance and cannot modify the `<option>`s due to browser limitations.
+
+{% capture example %}
+<select class="custom-select">
+  <option selected>Open this select menu</option>
+  <option value="1">One</option>
+  <option value="2">Two</option>
+  <option value="3">Three</option>
+</select>
+{% endcapture %}
+{% include example.html content=example %}
+
+You may also choose from small and large custom selects to match our similarly sized text inputs.
+
+{% capture example %}
+<select class="custom-select custom-select-lg mb-3">
+  <option selected>Open this select menu</option>
+  <option value="1">One</option>
+  <option value="2">Two</option>
+  <option value="3">Three</option>
+</select>
+
+<select class="custom-select custom-select-sm">
+  <option selected>Open this select menu</option>
+  <option value="1">One</option>
+  <option value="2">Two</option>
+  <option value="3">Three</option>
+</select>
+{% endcapture %}
+{% include example.html content=example %}
+
+The `multiple` attribute is also supported:
+
+{% capture example %}
+<select class="custom-select" multiple>
+  <option selected>Open this select menu</option>
+  <option value="1">One</option>
+  <option value="2">Two</option>
+  <option value="3">Three</option>
+</select>
+{% endcapture %}
+{% include example.html content=example %}
+
+As is the `size` attribute:
+
+{% capture example %}
+<select class="custom-select" size="3">
+  <option selected>Open this select menu</option>
+  <option value="1">One</option>
+  <option value="2">Two</option>
+  <option value="3">Three</option>
+</select>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Range
+
+Create custom `<input type="range">` controls with `.custom-range`. The track (the background) and thumb (the value) are both styled to appear the same across browsers. As only IE and Firefox support "filling" their track from the left or right of the thumb as a means to visually indicate progress, we do not currently support it.
+
+{% capture example %}
+<label for="customRange1">Example range</label>
+<input type="range" class="custom-range" id="customRange1">
+{% endcapture %}
+{% include example.html content=example %}
+
+Range inputs have implicit values for `min` and `max`—`0` and `100`, respectively. You may specify new values for those using the `min` and `max` attributes.
+
+{% capture example %}
+<label for="customRange2">Example range</label>
+<input type="range" class="custom-range" min="0" max="5" id="customRange2">
+{% endcapture %}
+{% include example.html content=example %}
+
+By default, range inputs "snap" to integer values. To change this, you can specify a `step` value. In the example below, we double the number of steps by using `step="0.5"`.
+
+{% capture example %}
+<label for="customRange3">Example range</label>
+<input type="range" class="custom-range" min="0" max="5" step="0.5" id="customRange3">
+{% endcapture %}
+{% include example.html content=example %}
+
+### File browser
+
+The file input is the most gnarly of the bunch and requires additional JavaScript if you'd like to hook them up with functional *Choose file...* and selected file name text.
+
+{% capture example %}
+<div class="custom-file">
+  <input type="file" class="custom-file-input" id="customFile">
+  <label class="custom-file-label" for="customFile">Choose file</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+We hide the default file `<input>` via `opacity` and instead style the `<label>`. The button is generated and positioned with `::after`. Lastly, we declare a `width` and `height` on the `<input>` for proper spacing for surrounding content.
+
+#### Translating or customizing the strings
+
+The [`:lang()` pseudo-class](https://developer.mozilla.org/en-US/docs/Web/CSS/:lang) is used to allow for translation of the "Browse" text into other languages. Override or add entries to the `$custom-file-text` Sass variable with the relevant [language tag](https://en.wikipedia.org/wiki/IETF_language_tag) and localized strings. The English strings can be customized the same way. For example, here's how one might add a Spanish translation (Spanish's language code is `es`):
+
+{% highlight scss %}
+$custom-file-text: (
+  en: "Browse",
+  es: "Elegir"
+);
+{% endhighlight %}
+
+Here's `lang(es)` in action on the custom file input for a Spanish translation:
+
+{% capture example %}
+<div class="custom-file">
+  <input type="file" class="custom-file-input" id="customFileLang" lang="es">
+  <label class="custom-file-label" for="customFileLang">Seleccionar Archivo</label>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+You'll need to set the language of your document (or subtree thereof) correctly in order for the correct text to be shown. This can be done using [the `lang` attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/lang) on the `<html>` element or the [`Content-Language` HTTP header](https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.12), among other methods.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/input-group.md b/vendor/twbs/bootstrap/site/docs/4.1/components/input-group.md
new file mode 100644
index 000000000..0e639acd6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/input-group.md
@@ -0,0 +1,361 @@
+---
+layout: docs
+title: Input group
+description: Easily extend form controls by adding text, buttons, or button groups on either side of textual inputs, custom selects, and custom file inputs.
+group: components
+toc: true
+---
+
+## Basic example
+
+Place one add-on or button on either side of an input. You may also place one on both sides of an input. Remember to place `<label>`s outside the input group.
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <span class="input-group-text" id="basic-addon1">@</span>
+  </div>
+  <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
+</div>
+
+<div class="input-group mb-3">
+  <input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username" aria-describedby="basic-addon2">
+  <div class="input-group-append">
+    <span class="input-group-text" id="basic-addon2">@example.com</span>
+  </div>
+</div>
+
+<label for="basic-url">Your vanity URL</label>
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <span class="input-group-text" id="basic-addon3">https://example.com/users/</span>
+  </div>
+  <input type="text" class="form-control" id="basic-url" aria-describedby="basic-addon3">
+</div>
+
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <span class="input-group-text">$</span>
+  </div>
+  <input type="text" class="form-control" aria-label="Amount (to the nearest dollar)">
+  <div class="input-group-append">
+    <span class="input-group-text">.00</span>
+  </div>
+</div>
+
+<div class="input-group">
+  <div class="input-group-prepend">
+    <span class="input-group-text">With textarea</span>
+  </div>
+  <textarea class="form-control" aria-label="With textarea"></textarea>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Sizing
+
+Add the relative form sizing classes to the `.input-group` itself and contents within will automatically resize—no need for repeating the form control size classes on each element.
+
+**Sizing on the individual input group elements isn't supported.**
+
+{% capture example %}
+<div class="input-group input-group-sm mb-3">
+  <div class="input-group-prepend">
+    <span class="input-group-text" id="inputGroup-sizing-sm">Small</span>
+  </div>
+  <input type="text" class="form-control" aria-label="Sizing example input" aria-describedby="inputGroup-sizing-sm">
+</div>
+
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <span class="input-group-text" id="inputGroup-sizing-default">Default</span>
+  </div>
+  <input type="text" class="form-control" aria-label="Sizing example input" aria-describedby="inputGroup-sizing-default">
+</div>
+
+<div class="input-group input-group-lg">
+  <div class="input-group-prepend">
+    <span class="input-group-text" id="inputGroup-sizing-lg">Large</span>
+  </div>
+  <input type="text" class="form-control" aria-label="Sizing example input" aria-describedby="inputGroup-sizing-lg">
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Checkboxes and radios
+
+Place any checkbox or radio option within an input group's addon instead of text.
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <div class="input-group-text">
+      <input type="checkbox" aria-label="Checkbox for following text input">
+    </div>
+  </div>
+  <input type="text" class="form-control" aria-label="Text input with checkbox">
+</div>
+
+<div class="input-group">
+  <div class="input-group-prepend">
+    <div class="input-group-text">
+      <input type="radio" aria-label="Radio button for following text input">
+    </div>
+  </div>
+  <input type="text" class="form-control" aria-label="Text input with radio button">
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Multiple inputs
+
+While multiple `<input>`s are supported visually, validation styles are only available for input groups with a single `<input>`.
+
+{% capture example %}
+<div class="input-group">
+  <div class="input-group-prepend">
+    <span class="input-group-text">First and last name</span>
+  </div>
+  <input type="text" aria-label="First name" class="form-control">
+  <input type="text" aria-label="Last name" class="form-control">
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Multiple addons
+
+Multiple add-ons are supported and can be mixed with checkbox and radio input versions.
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <span class="input-group-text">$</span>
+    <span class="input-group-text">0.00</span>
+  </div>
+  <input type="text" class="form-control" aria-label="Dollar amount (with dot and two decimal places)">
+</div>
+
+<div class="input-group">
+  <input type="text" class="form-control" aria-label="Dollar amount (with dot and two decimal places)">
+  <div class="input-group-append">
+    <span class="input-group-text">$</span>
+    <span class="input-group-text">0.00</span>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Button addons
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <button class="btn btn-outline-secondary" type="button" id="button-addon1">Button</button>
+  </div>
+  <input type="text" class="form-control" placeholder="" aria-label="Example text with button addon" aria-describedby="button-addon1">
+</div>
+
+<div class="input-group mb-3">
+  <input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username" aria-describedby="button-addon2">
+  <div class="input-group-append">
+    <button class="btn btn-outline-secondary" type="button" id="button-addon2">Button</button>
+  </div>
+</div>
+
+<div class="input-group mb-3">
+  <div class="input-group-prepend" id="button-addon3">
+    <button class="btn btn-outline-secondary" type="button">Button</button>
+    <button class="btn btn-outline-secondary" type="button">Button</button>
+  </div>
+  <input type="text" class="form-control" placeholder="" aria-label="Example text with two button addons" aria-describedby="button-addon3">
+</div>
+
+<div class="input-group">
+  <input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username with two button addons" aria-describedby="button-addon4">
+  <div class="input-group-append" id="button-addon4">
+    <button class="btn btn-outline-secondary" type="button">Button</button>
+    <button class="btn btn-outline-secondary" type="button">Button</button>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Buttons with dropdowns
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div role="separator" class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+  <input type="text" class="form-control" aria-label="Text input with dropdown button">
+</div>
+
+<div class="input-group">
+  <input type="text" class="form-control" aria-label="Text input with dropdown button">
+  <div class="input-group-append">
+    <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div role="separator" class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Segmented buttons
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <button type="button" class="btn btn-outline-secondary">Action</button>
+    <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div role="separator" class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+  <input type="text" class="form-control" aria-label="Text input with segmented dropdown button">
+</div>
+
+<div class="input-group">
+  <input type="text" class="form-control" aria-label="Text input with segmented dropdown button">
+  <div class="input-group-append">
+    <button type="button" class="btn btn-outline-secondary">Action</button>
+    <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <span class="sr-only">Toggle Dropdown</span>
+    </button>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div role="separator" class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Custom forms
+
+Input groups include support for custom selects and custom file inputs. Browser default versions of these are not supported.
+
+### Custom select
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <label class="input-group-text" for="inputGroupSelect01">Options</label>
+  </div>
+  <select class="custom-select" id="inputGroupSelect01">
+    <option selected>Choose...</option>
+    <option value="1">One</option>
+    <option value="2">Two</option>
+    <option value="3">Three</option>
+  </select>
+</div>
+
+<div class="input-group mb-3">
+  <select class="custom-select" id="inputGroupSelect02">
+    <option selected>Choose...</option>
+    <option value="1">One</option>
+    <option value="2">Two</option>
+    <option value="3">Three</option>
+  </select>
+  <div class="input-group-append">
+    <label class="input-group-text" for="inputGroupSelect02">Options</label>
+  </div>
+</div>
+
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <button class="btn btn-outline-secondary" type="button">Button</button>
+  </div>
+  <select class="custom-select" id="inputGroupSelect03" aria-label="Example select with button addon">
+    <option selected>Choose...</option>
+    <option value="1">One</option>
+    <option value="2">Two</option>
+    <option value="3">Three</option>
+  </select>
+</div>
+
+<div class="input-group">
+  <select class="custom-select" id="inputGroupSelect04" aria-label="Example select with button addon">
+    <option selected>Choose...</option>
+    <option value="1">One</option>
+    <option value="2">Two</option>
+    <option value="3">Three</option>
+  </select>
+  <div class="input-group-append">
+    <button class="btn btn-outline-secondary" type="button">Button</button>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Custom file input
+
+{% capture example %}
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <span class="input-group-text" id="inputGroupFileAddon01">Upload</span>
+  </div>
+  <div class="custom-file">
+    <input type="file" class="custom-file-input" id="inputGroupFile01" aria-describedby="inputGroupFileAddon01">
+    <label class="custom-file-label" for="inputGroupFile01">Choose file</label>
+  </div>
+</div>
+
+<div class="input-group mb-3">
+  <div class="custom-file">
+    <input type="file" class="custom-file-input" id="inputGroupFile02">
+    <label class="custom-file-label" for="inputGroupFile02" aria-describedby="inputGroupFileAddon02">Choose file</label>
+  </div>
+  <div class="input-group-append">
+    <span class="input-group-text" id="inputGroupFileAddon02">Upload</span>
+  </div>
+</div>
+
+<div class="input-group mb-3">
+  <div class="input-group-prepend">
+    <button class="btn btn-outline-secondary" type="button" id="inputGroupFileAddon03">Button</button>
+  </div>
+  <div class="custom-file">
+    <input type="file" class="custom-file-input" id="inputGroupFile03" aria-describedby="inputGroupFileAddon03">
+    <label class="custom-file-label" for="inputGroupFile03">Choose file</label>
+  </div>
+</div>
+
+<div class="input-group">
+  <div class="custom-file">
+    <input type="file" class="custom-file-input" id="inputGroupFile04" aria-describedby="inputGroupFileAddon04">
+    <label class="custom-file-label" for="inputGroupFile04">Choose file</label>
+  </div>
+  <div class="input-group-append">
+    <button class="btn btn-outline-secondary" type="button" id="inputGroupFileAddon04">Button</button>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Accessibility
+
+Screen readers will have trouble with your forms if you don't include a label for every input. For these input groups, ensure that any additional label or functionality is conveyed to assistive technologies.
+
+The exact technique to be used (`<label>` elements hidden using the `.sr-only` class, or use of the `aria-label` and `aria-labelledby` attributes, possibly in combination with `aria-describedby`) and what additional information will need to be conveyed will vary depending on the exact type of interface widget you're implementing. The examples in this section provide a few suggested, case-specific approaches.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/jumbotron.md b/vendor/twbs/bootstrap/site/docs/4.1/components/jumbotron.md
new file mode 100644
index 000000000..c14621565
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/jumbotron.md
@@ -0,0 +1,31 @@
+---
+layout: docs
+title: Jumbotron
+description: Lightweight, flexible component for showcasing hero unit style content.
+group: components
+---
+
+A lightweight, flexible component that can optionally extend the entire viewport to showcase key marketing messages on your site.
+
+{% capture example %}
+<div class="jumbotron">
+  <h1 class="display-4">Hello, world!</h1>
+  <p class="lead">This is a simple hero unit, a simple jumbotron-style component for calling extra attention to featured content or information.</p>
+  <hr class="my-4">
+  <p>It uses utility classes for typography and spacing to space content out within the larger container.</p>
+  <a class="btn btn-primary btn-lg" href="#" role="button">Learn more</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+To make the jumbotron full width, and without rounded corners, add the `.jumbotron-fluid` modifier class and add a `.container` or `.container-fluid` within.
+
+{% capture example %}
+<div class="jumbotron jumbotron-fluid">
+  <div class="container">
+    <h1 class="display-4">Fluid jumbotron</h1>
+    <p class="lead">This is a modified jumbotron that occupies the entire horizontal space of its parent.</p>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/list-group.md b/vendor/twbs/bootstrap/site/docs/4.1/components/list-group.md
new file mode 100644
index 000000000..7ecb249b3
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/list-group.md
@@ -0,0 +1,377 @@
+---
+layout: docs
+title: List group
+description: List groups are a flexible and powerful component for displaying a series of content. Modify and extend them to support just about any content within.
+group: components
+toc: true
+---
+
+## Basic example
+
+The most basic list group is an unordered list with list items and the proper classes. Build upon it with the options that follow, or with your own CSS as needed.
+
+{% capture example %}
+<ul class="list-group">
+  <li class="list-group-item">Cras justo odio</li>
+  <li class="list-group-item">Dapibus ac facilisis in</li>
+  <li class="list-group-item">Morbi leo risus</li>
+  <li class="list-group-item">Porta ac consectetur ac</li>
+  <li class="list-group-item">Vestibulum at eros</li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Active items
+
+Add `.active` to a `.list-group-item` to indicate the current active selection.
+
+{% capture example %}
+<ul class="list-group">
+  <li class="list-group-item active">Cras justo odio</li>
+  <li class="list-group-item">Dapibus ac facilisis in</li>
+  <li class="list-group-item">Morbi leo risus</li>
+  <li class="list-group-item">Porta ac consectetur ac</li>
+  <li class="list-group-item">Vestibulum at eros</li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Disabled items
+
+Add `.disabled` to a `.list-group-item` to make it _appear_ disabled. Note that some elements with `.disabled` will also require custom JavaScript to fully disable their click events (e.g., links).
+
+{% capture example %}
+<ul class="list-group">
+  <li class="list-group-item disabled">Cras justo odio</li>
+  <li class="list-group-item">Dapibus ac facilisis in</li>
+  <li class="list-group-item">Morbi leo risus</li>
+  <li class="list-group-item">Porta ac consectetur ac</li>
+  <li class="list-group-item">Vestibulum at eros</li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Links and buttons
+
+Use `<a>`s or `<button>`s to create _actionable_ list group items with hover, disabled, and active states by adding `.list-group-item-action`. We separate these pseudo-classes to ensure list groups made of non-interactive elements (like `<li>`s or `<div>`s) don't provide a click or tap affordance.
+
+Be sure to **not use the standard `.btn` classes here**.
+
+{% capture example %}
+<div class="list-group">
+  <a href="#" class="list-group-item list-group-item-action active">
+    Cras justo odio
+  </a>
+  <a href="#" class="list-group-item list-group-item-action">Dapibus ac facilisis in</a>
+  <a href="#" class="list-group-item list-group-item-action">Morbi leo risus</a>
+  <a href="#" class="list-group-item list-group-item-action">Porta ac consectetur ac</a>
+  <a href="#" class="list-group-item list-group-item-action disabled">Vestibulum at eros</a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+With `<button>`s, you can also make use of the `disabled` attribute instead of the `.disabled` class. Sadly, `<a>`s don't support the disabled attribute.
+
+{% capture example %}
+<div class="list-group">
+  <button type="button" class="list-group-item list-group-item-action active">
+    Cras justo odio
+  </button>
+  <button type="button" class="list-group-item list-group-item-action">Dapibus ac facilisis in</button>
+  <button type="button" class="list-group-item list-group-item-action">Morbi leo risus</button>
+  <button type="button" class="list-group-item list-group-item-action">Porta ac consectetur ac</button>
+  <button type="button" class="list-group-item list-group-item-action" disabled>Vestibulum at eros</button>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Flush
+
+Add `.list-group-flush` to remove some borders and rounded corners to render list group items edge-to-edge in a parent container (e.g., cards).
+
+{% capture example %}
+<ul class="list-group list-group-flush">
+  <li class="list-group-item">Cras justo odio</li>
+  <li class="list-group-item">Dapibus ac facilisis in</li>
+  <li class="list-group-item">Morbi leo risus</li>
+  <li class="list-group-item">Porta ac consectetur ac</li>
+  <li class="list-group-item">Vestibulum at eros</li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Contextual classes
+
+Use contextual classes to style list items with a stateful background and color.
+
+{% capture example %}
+<ul class="list-group">
+  <li class="list-group-item">Dapibus ac facilisis in</li>
+
+  {% for color in site.data.theme-colors %}
+  <li class="list-group-item list-group-item-{{ color.name }}">A simple {{ color.name }} list group item</li>{% endfor %}
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+Contextual classes also work with `.list-group-item-action`. Note the addition of the hover styles here not present in the previous example. Also supported is the `.active` state; apply it to indicate an active selection on a contextual list group item.
+
+{% capture example %}
+<div class="list-group">
+  <a href="#" class="list-group-item list-group-item-action">Dapibus ac facilisis in</a>
+
+  {% for color in site.data.theme-colors %}
+  <a href="#" class="list-group-item list-group-item-action list-group-item-{{ color.name }}">A simple {{ color.name }} list group item</a>{% endfor %}
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% include callout-warning-color-assistive-technologies.md %}
+
+## With badges
+
+Add badges to any list group item to show unread counts, activity, and more with the help of some [utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/).
+
+{% capture example %}
+<ul class="list-group">
+  <li class="list-group-item d-flex justify-content-between align-items-center">
+    Cras justo odio
+    <span class="badge badge-primary badge-pill">14</span>
+  </li>
+  <li class="list-group-item d-flex justify-content-between align-items-center">
+    Dapibus ac facilisis in
+    <span class="badge badge-primary badge-pill">2</span>
+  </li>
+  <li class="list-group-item d-flex justify-content-between align-items-center">
+    Morbi leo risus
+    <span class="badge badge-primary badge-pill">1</span>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Custom content
+
+Add nearly any HTML within, even for linked list groups like the one below, with the help of [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/).
+
+{% capture example %}
+<div class="list-group">
+  <a href="#" class="list-group-item list-group-item-action flex-column align-items-start active">
+    <div class="d-flex w-100 justify-content-between">
+      <h5 class="mb-1">List group item heading</h5>
+      <small>3 days ago</small>
+    </div>
+    <p class="mb-1">Donec id elit non mi porta gravida at eget metus. Maecenas sed diam eget risus varius blandit.</p>
+    <small>Donec id elit non mi porta.</small>
+  </a>
+  <a href="#" class="list-group-item list-group-item-action flex-column align-items-start">
+    <div class="d-flex w-100 justify-content-between">
+      <h5 class="mb-1">List group item heading</h5>
+      <small class="text-muted">3 days ago</small>
+    </div>
+    <p class="mb-1">Donec id elit non mi porta gravida at eget metus. Maecenas sed diam eget risus varius blandit.</p>
+    <small class="text-muted">Donec id elit non mi porta.</small>
+  </a>
+  <a href="#" class="list-group-item list-group-item-action flex-column align-items-start">
+    <div class="d-flex w-100 justify-content-between">
+      <h5 class="mb-1">List group item heading</h5>
+      <small class="text-muted">3 days ago</small>
+    </div>
+    <p class="mb-1">Donec id elit non mi porta gravida at eget metus. Maecenas sed diam eget risus varius blandit.</p>
+    <small class="text-muted">Donec id elit non mi porta.</small>
+  </a>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## JavaScript behavior
+
+Use the tab JavaScript plugin—include it individually or through the compiled `bootstrap.js` file—to extend our list group to create tabbable panes of local content.
+
+<div class="bd-example" role="tabpanel">
+  <div class="row">
+    <div class="col-4">
+      <div class="list-group" id="list-tab" role="tablist">
+        <a class="list-group-item list-group-item-action active" id="list-home-list" data-toggle="tab" href="#list-home" role="tab" aria-controls="list-home">Home</a>
+        <a class="list-group-item list-group-item-action" id="list-profile-list" data-toggle="tab" href="#list-profile" role="tab" aria-controls="list-profile">Profile</a>
+        <a class="list-group-item list-group-item-action" id="list-messages-list" data-toggle="tab" href="#list-messages" role="tab" aria-controls="list-messages">Messages</a>
+        <a class="list-group-item list-group-item-action" id="list-settings-list" data-toggle="tab" href="#list-settings" role="tab" aria-controls="list-settings">Settings</a>
+      </div>
+    </div>
+    <div class="col-8">
+      <div class="tab-content" id="nav-tabContent">
+        <div class="tab-pane fade show active" id="list-home" role="tabpanel" aria-labelledby="list-home-list">
+          <p>Velit aute mollit ipsum ad dolor consectetur nulla officia culpa adipisicing exercitation fugiat tempor. Voluptate deserunt sit sunt nisi aliqua fugiat proident ea ut. Mollit voluptate reprehenderit occaecat nisi ad non minim tempor sunt voluptate consectetur exercitation id ut nulla. Ea et fugiat aliquip nostrud sunt incididunt consectetur culpa aliquip eiusmod dolor. Anim ad Lorem aliqua in cupidatat nisi enim eu nostrud do aliquip veniam minim.</p>
+        </div>
+        <div class="tab-pane fade" id="list-profile" role="tabpanel" aria-labelledby="list-profile-list">
+          <p>Cupidatat quis ad sint excepteur laborum in esse qui. Et excepteur consectetur ex nisi eu do cillum ad laborum. Mollit et eu officia dolore sunt Lorem culpa qui commodo velit ex amet id ex. Officia anim incididunt laboris deserunt anim aute dolor incididunt veniam aute dolore do exercitation. Dolor nisi culpa ex ad irure in elit eu dolore. Ad laboris ipsum reprehenderit irure non commodo enim culpa commodo veniam incididunt veniam ad.</p>
+        </div>
+        <div class="tab-pane fade" id="list-messages" role="tabpanel" aria-labelledby="list-messages-list">
+          <p>Ut ut do pariatur aliquip aliqua aliquip exercitation do nostrud commodo reprehenderit aute ipsum voluptate. Irure Lorem et laboris nostrud amet cupidatat cupidatat anim do ut velit mollit consequat enim tempor. Consectetur est minim nostrud nostrud consectetur irure labore voluptate irure. Ipsum id Lorem sit sint voluptate est pariatur eu ad cupidatat et deserunt culpa sit eiusmod deserunt. Consectetur et fugiat anim do eiusmod aliquip nulla laborum elit adipisicing pariatur cillum.</p>
+        </div>
+        <div class="tab-pane fade" id="list-settings" role="tabpanel" aria-labelledby="list-settings-list">
+          <p>Irure enim occaecat labore sit qui aliquip reprehenderit amet velit. Deserunt ullamco ex elit nostrud ut dolore nisi officia magna sit occaecat laboris sunt dolor. Nisi eu minim cillum occaecat aute est cupidatat aliqua labore aute occaecat ea aliquip sunt amet. Aute mollit dolor ut exercitation irure commodo non amet consectetur quis amet culpa. Quis ullamco nisi amet qui aute irure eu. Magna labore dolor quis ex labore id nostrud deserunt dolor eiusmod eu pariatur culpa mollit in irure.</p>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="row">
+  <div class="col-4">
+    <div class="list-group" id="list-tab" role="tablist">
+      <a class="list-group-item list-group-item-action active" id="list-home-list" data-toggle="list" href="#list-home" role="tab" aria-controls="home">Home</a>
+      <a class="list-group-item list-group-item-action" id="list-profile-list" data-toggle="list" href="#list-profile" role="tab" aria-controls="profile">Profile</a>
+      <a class="list-group-item list-group-item-action" id="list-messages-list" data-toggle="list" href="#list-messages" role="tab" aria-controls="messages">Messages</a>
+      <a class="list-group-item list-group-item-action" id="list-settings-list" data-toggle="list" href="#list-settings" role="tab" aria-controls="settings">Settings</a>
+    </div>
+  </div>
+  <div class="col-8">
+    <div class="tab-content" id="nav-tabContent">
+      <div class="tab-pane fade show active" id="list-home" role="tabpanel" aria-labelledby="list-home-list">...</div>
+      <div class="tab-pane fade" id="list-profile" role="tabpanel" aria-labelledby="list-profile-list">...</div>
+      <div class="tab-pane fade" id="list-messages" role="tabpanel" aria-labelledby="list-messages-list">...</div>
+      <div class="tab-pane fade" id="list-settings" role="tabpanel" aria-labelledby="list-settings-list">...</div>
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+### Using data attributes
+
+You can activate a list group navigation without writing any JavaScript by simply specifying `data-toggle="list"` or on an element. Use these data attributes on `.list-group-item`.
+
+<div role="tabpanel">
+{% highlight html %}
+<!-- List group -->
+<div class="list-group" id="myList" role="tablist">
+  <a class="list-group-item list-group-item-action active" data-toggle="list" href="#home" role="tab">Home</a>
+  <a class="list-group-item list-group-item-action" data-toggle="list" href="#profile" role="tab">Profile</a>
+  <a class="list-group-item list-group-item-action" data-toggle="list" href="#messages" role="tab">Messages</a>
+  <a class="list-group-item list-group-item-action" data-toggle="list" href="#settings" role="tab">Settings</a>
+</div>
+
+<!-- Tab panes -->
+<div class="tab-content">
+  <div class="tab-pane active" id="home" role="tabpanel">...</div>
+  <div class="tab-pane" id="profile" role="tabpanel">...</div>
+  <div class="tab-pane" id="messages" role="tabpanel">...</div>
+  <div class="tab-pane" id="settings" role="tabpanel">...</div>
+</div>
+{% endhighlight %}
+</div>
+
+### Via JavaScript
+
+Enable tabbable list item via JavaScript (each list item needs to be activated individually):
+
+{% highlight js %}
+$('#myList a').on('click', function (e) {
+  e.preventDefault()
+  $(this).tab('show')
+})
+{% endhighlight %}
+
+You can activate individual list item in several ways:
+
+{% highlight js %}
+$('#myList a[href="#profile"]').tab('show') // Select tab by name
+$('#myList a:first-child').tab('show') // Select first tab
+$('#myList a:last-child').tab('show') // Select last tab
+$('#myList a:nth-child(3)').tab('show') // Select third tab
+{% endhighlight %}
+
+### Fade effect
+
+To make tabs panel fade in, add `.fade` to each `.tab-pane`. The first tab pane must also have `.show` to make the initial content visible.
+
+{% highlight html %}
+<div class="tab-content">
+  <div class="tab-pane fade show active" id="home" role="tabpanel">...</div>
+  <div class="tab-pane fade" id="profile" role="tabpanel">...</div>
+  <div class="tab-pane fade" id="messages" role="tabpanel">...</div>
+  <div class="tab-pane fade" id="settings" role="tabpanel">...</div>
+</div>
+{% endhighlight %}
+
+### Methods
+
+#### $().tab
+
+Activates a list item element and content container. Tab should have either a `data-target` or an `href` targeting a container node in the DOM.
+
+{% highlight html %}
+<div class="list-group" id="myList" role="tablist">
+  <a class="list-group-item list-group-item-action active" data-toggle="list" href="#home" role="tab">Home</a>
+  <a class="list-group-item list-group-item-action" data-toggle="list" href="#profile" role="tab">Profile</a>
+  <a class="list-group-item list-group-item-action" data-toggle="list" href="#messages" role="tab">Messages</a>
+  <a class="list-group-item list-group-item-action" data-toggle="list" href="#settings" role="tab">Settings</a>
+</div>
+
+<div class="tab-content">
+  <div class="tab-pane active" id="home" role="tabpanel">...</div>
+  <div class="tab-pane" id="profile" role="tabpanel">...</div>
+  <div class="tab-pane" id="messages" role="tabpanel">...</div>
+  <div class="tab-pane" id="settings" role="tabpanel">...</div>
+</div>
+
+<script>
+  $(function () {
+    $('#myList a:last-child').tab('show')
+  })
+</script>
+{% endhighlight %}
+
+#### .tab('show')
+
+Selects the given list item and shows its associated pane. Any other list item that was previously selected becomes unselected and its associated pane is hidden. **Returns to the caller before the tab pane has actually been shown** (for example, before the `shown.bs.tab` event occurs).
+
+{% highlight js %}
+$('#someListItem').tab('show')
+{% endhighlight %}
+
+### Events
+
+When showing a new tab, the events fire in the following order:
+
+1. `hide.bs.tab` (on the current active tab)
+2. `show.bs.tab` (on the to-be-shown tab)
+3. `hidden.bs.tab` (on the previous active tab, the same one as for the `hide.bs.tab` event)
+4. `shown.bs.tab` (on the newly-active just-shown tab, the same one as for the `show.bs.tab` event)
+
+If no tab was already active, the `hide.bs.tab` and `hidden.bs.tab` events will not be fired.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>show.bs.tab</td>
+      <td>This event fires on tab show, but before the new tab has been shown. Use <code>event.target</code> and <code>event.relatedTarget</code> to target the active tab and the previous active tab (if available) respectively.</td>
+    </tr>
+    <tr>
+      <td>shown.bs.tab</td>
+      <td>This event fires on tab show after a tab has been shown. Use <code>event.target</code> and <code>event.relatedTarget</code> to target the active tab and the previous active tab (if available) respectively.</td>
+    </tr>
+    <tr>
+      <td>hide.bs.tab</td>
+      <td>This event fires when a new tab is to be shown (and thus the previous active tab is to be hidden). Use <code>event.target</code> and <code>event.relatedTarget</code> to target the current active tab and the new soon-to-be-active tab, respectively.</td>
+    </tr>
+    <tr>
+      <td>hidden.bs.tab</td>
+      <td>This event fires after a new tab is shown (and thus the previous active tab is hidden). Use <code>event.target</code> and <code>event.relatedTarget</code> to target the previous active tab and the new active tab, respectively.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('a[data-toggle="list"]').on('shown.bs.tab', function (e) {
+  e.target // newly activated tab
+  e.relatedTarget // previous active tab
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/modal.md b/vendor/twbs/bootstrap/site/docs/4.1/components/modal.md
new file mode 100644
index 000000000..3ed09170e
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/modal.md
@@ -0,0 +1,675 @@
+---
+layout: docs
+title: Modal
+description: Use Bootstrap's JavaScript modal plugin to add dialogs to your site for lightboxes, user notifications, or completely custom content.
+group: components
+toc: true
+---
+
+## How it works
+
+Before getting started with Bootstrap's modal component, be sure to read the following as our menu options have recently changed.
+
+- Modals are built with HTML, CSS, and JavaScript. They're positioned over everything else in the document and remove scroll from the `<body>` so that modal content scrolls instead.
+- Clicking on the modal "backdrop" will automatically close the modal.
+- Bootstrap only supports one modal window at a time. Nested modals aren't supported as we believe them to be poor user experiences.
+- Modals use `position: fixed`, which can sometimes be a bit particular about its rendering. Whenever possible, place your modal HTML in a top-level position to avoid potential interference from other elements. You'll likely run into issues when nesting a `.modal` within another fixed element.
+- Once again, due to `position: fixed`, there are some caveats with using modals on mobile devices. [See our browser support docs]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/browsers-devices/#modals-and-dropdowns-on-mobile) for details.
+- Due to how HTML5 defines its semantics, [the `autofocus` HTML attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-autofocus) has no effect in Bootstrap modals. To achieve the same effect, use some custom JavaScript:
+
+{% highlight js %}
+$('#myModal').on('shown.bs.modal', function () {
+  $('#myInput').trigger('focus')
+})
+{% endhighlight %}
+
+Keep reading for demos and usage guidelines.
+
+## Examples
+
+### Modal components
+
+Below is a _static_ modal example (meaning its `position` and `display` have been overridden). Included are the modal header, modal body (required for `padding`), and modal footer (optional). We ask that you include modal headers with dismiss actions whenever possible, or provide another explicit dismiss action.
+
+<div class="bd-example bd-example-modal">
+  <div class="modal" tabindex="-1" role="dialog">
+    <div class="modal-dialog" role="document">
+      <div class="modal-content">
+        <div class="modal-header">
+          <h5 class="modal-title">Modal title</h5>
+          <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+            <span aria-hidden="true">&times;</span>
+          </button>
+        </div>
+        <div class="modal-body">
+          <p>Modal body text goes here.</p>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+          <button type="button" class="btn btn-primary">Save changes</button>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="modal" tabindex="-1" role="dialog">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        <p>Modal body text goes here.</p>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+### Live demo
+
+Toggle a working modal demo by clicking the button below. It will slide down and fade in from the top of the page.
+
+<div id="exampleModalLive" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="exampleModalLiveLabel" aria-hidden="true">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalLiveLabel">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        <p>Woohoo, you're reading this text in a modal!</p>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<div class="bd-example">
+  <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalLive">
+    Launch demo modal
+  </button>
+</div>
+
+{% highlight html %}
+<!-- Button trigger modal -->
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
+  Launch demo modal
+</button>
+
+<!-- Modal -->
+<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        ...
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+### Scrolling long content
+
+When modals become too long for the user's viewport or device, they scroll independent of the page itself. Try the demo below to see what we mean.
+
+<div id="exampleModalLong" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<div class="bd-example">
+  <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalLong">
+    Launch demo modal
+  </button>
+</div>
+
+{% highlight html %}
+<!-- Button trigger modal -->
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalLong">
+  Launch demo modal
+</button>
+
+<!-- Modal -->
+<div class="modal fade" id="exampleModalLong" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        ...
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+### Vertically centered
+
+Add `.modal-dialog-centered` to `.modal-dialog` to vertically center the modal.
+
+<div id="exampleModalCenter" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
+  <div class="modal-dialog modal-dialog-centered" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalCenterTitle">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<div class="bd-example">
+  <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalCenter">
+    Launch demo modal
+  </button>
+</div>
+
+{% highlight html %}
+<!-- Button trigger modal -->
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalCenter">
+  Launch demo modal
+</button>
+
+<!-- Modal -->
+<div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
+  <div class="modal-dialog modal-dialog-centered" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalCenterTitle">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        ...
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+### Tooltips and popovers
+
+[Tooltips]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/tooltips/) and [popovers]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/popovers/) can be placed within modals as needed. When modals are closed, any tooltips and popovers within are also automatically dismissed.
+
+<div id="exampleModalPopovers" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="exampleModalPopoversLabel" aria-hidden="true">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalPopoversLabel">Modal title</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        <h5>Popover in a modal</h5>
+        <p>This <a href="#" role="button" class="btn btn-secondary popover-test" title="Popover title" data-content="Popover body content is set in this attribute." data-container="#exampleModalPopovers">button</a> triggers a popover on click.</p>
+        <hr>
+        <h5>Tooltips in a modal</h5>
+        <p><a href="#" class="tooltip-test" title="Tooltip" data-container="#exampleModalPopovers">This link</a> and <a href="#" class="tooltip-test" title="Tooltip" data-container="#exampleModalPopovers">that link</a> have tooltips on hover.</p>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<div class="bd-example">
+  <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalPopovers">
+    Launch demo modal
+  </button>
+</div>
+
+{% highlight html %}
+<div class="modal-body">
+  <h5>Popover in a modal</h5>
+  <p>This <a href="#" role="button" class="btn btn-secondary popover-test" title="Popover title" data-content="Popover body content is set in this attribute.">button</a> triggers a popover on click.</p>
+  <hr>
+  <h5>Tooltips in a modal</h5>
+  <p><a href="#" class="tooltip-test" title="Tooltip">This link</a> and <a href="#" class="tooltip-test" title="Tooltip">that link</a> have tooltips on hover.</p>
+</div>
+{% endhighlight %}
+
+### Using the grid
+
+Utilize the Bootstrap grid system within a modal by nesting `.container-fluid` within the `.modal-body`. Then, use the normal grid system classes as you would anywhere else.
+
+<div id="gridSystemModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="gridModalLabel" aria-hidden="true">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="gridModalLabel">Grids in modals</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+      </div>
+      <div class="modal-body">
+        <div class="container-fluid bd-example-row">
+          <div class="row">
+            <div class="col-md-4">.col-md-4</div>
+            <div class="col-md-4 ml-auto">.col-md-4 .ml-auto</div>
+          </div>
+          <div class="row">
+            <div class="col-md-3 ml-auto">.col-md-3 .ml-auto</div>
+            <div class="col-md-2 ml-auto">.col-md-2 .ml-auto</div>
+          </div>
+          <div class="row">
+            <div class="col-md-6 ml-auto">.col-md-6 .ml-auto</div>
+          </div>
+          <div class="row">
+            <div class="col-sm-9">
+              Level 1: .col-sm-9
+              <div class="row">
+                <div class="col-8 col-sm-6">
+                  Level 2: .col-8 .col-sm-6
+                </div>
+                <div class="col-4 col-sm-6">
+                  Level 2: .col-4 .col-sm-6
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<div class="bd-example">
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#gridSystemModal">
+  Launch demo modal
+</button>
+</div>
+
+{% highlight html %}
+<div class="modal-body">
+  <div class="container-fluid">
+    <div class="row">
+      <div class="col-md-4">.col-md-4</div>
+      <div class="col-md-4 ml-auto">.col-md-4 .ml-auto</div>
+    </div>
+    <div class="row">
+      <div class="col-md-3 ml-auto">.col-md-3 .ml-auto</div>
+      <div class="col-md-2 ml-auto">.col-md-2 .ml-auto</div>
+    </div>
+    <div class="row">
+      <div class="col-md-6 ml-auto">.col-md-6 .ml-auto</div>
+    </div>
+    <div class="row">
+      <div class="col-sm-9">
+        Level 1: .col-sm-9
+        <div class="row">
+          <div class="col-8 col-sm-6">
+            Level 2: .col-8 .col-sm-6
+          </div>
+          <div class="col-4 col-sm-6">
+            Level 2: .col-4 .col-sm-6
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+### Varying modal content
+
+Have a bunch of buttons that all trigger the same modal with slightly different contents? Use `event.relatedTarget` and [HTML `data-*` attributes](https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes) (possibly [via jQuery](https://api.jquery.com/data/)) to vary the contents of the modal depending on which button was clicked.
+
+Below is a live demo followed by example HTML and JavaScript. For more information, [read the modal events docs](#events) for details on `relatedTarget`.
+
+{% capture example %}
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@mdo">Open modal for @mdo</button>
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@fat">Open modal for @fat</button>
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@getbootstrap">Open modal for @getbootstrap</button>
+
+<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="exampleModalLabel">New message</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        <form>
+          <div class="form-group">
+            <label for="recipient-name" class="col-form-label">Recipient:</label>
+            <input type="text" class="form-control" id="recipient-name">
+          </div>
+          <div class="form-group">
+            <label for="message-text" class="col-form-label">Message:</label>
+            <textarea class="form-control" id="message-text"></textarea>
+          </div>
+        </form>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Send message</button>
+      </div>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% highlight js %}
+$('#exampleModal').on('show.bs.modal', function (event) {
+  var button = $(event.relatedTarget) // Button that triggered the modal
+  var recipient = button.data('whatever') // Extract info from data-* attributes
+  // If necessary, you could initiate an AJAX request here (and then do the updating in a callback).
+  // Update the modal's content. We'll use jQuery here, but you could use a data binding library or other methods instead.
+  var modal = $(this)
+  modal.find('.modal-title').text('New message to ' + recipient)
+  modal.find('.modal-body input').val(recipient)
+})
+{% endhighlight %}
+
+### Remove animation
+
+For modals that simply appear rather than fade in to view, remove the `.fade` class from your modal markup.
+
+{% highlight html %}
+<div class="modal" tabindex="-1" role="dialog" aria-labelledby="..." aria-hidden="true">
+  ...
+</div>
+{% endhighlight %}
+
+### Dynamic heights
+
+If the height of a modal changes while it is open, you should call `$('#myModal').modal('handleUpdate')` to readjust the modal's position in case a scrollbar appears.
+
+### Accessibility
+
+Be sure to add `role="dialog"` and `aria-labelledby="..."`, referencing the modal title, to `.modal`, and `role="document"` to the `.modal-dialog` itself. Additionally, you may give a description of your modal dialog with `aria-describedby` on `.modal`.
+
+### Embedding YouTube videos
+
+Embedding YouTube videos in modals requires additional JavaScript not in Bootstrap to automatically stop playback and more. [See this helpful Stack Overflow post](https://stackoverflow.com/questions/18622508/bootstrap-3-and-youtube-in-modal) for more information.
+
+## Optional sizes
+
+Modals have two optional sizes, available via modifier classes to be placed on a `.modal-dialog`. These sizes kick in at certain breakpoints to avoid horizontal scrollbars on narrower viewports.
+
+<div class="bd-example">
+  <button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bd-example-modal-lg">Large modal</button>
+  <button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bd-example-modal-sm">Small modal</button>
+</div>
+
+{% highlight html %}
+<!-- Large modal -->
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bd-example-modal-lg">Large modal</button>
+
+<div class="modal fade bd-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
+  <div class="modal-dialog modal-lg">
+    <div class="modal-content">
+      ...
+    </div>
+  </div>
+</div>
+
+<!-- Small modal -->
+<button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bd-example-modal-sm">Small modal</button>
+
+<div class="modal fade bd-example-modal-sm" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
+  <div class="modal-dialog modal-sm">
+    <div class="modal-content">
+      ...
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+<div class="modal fade bd-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
+  <div class="modal-dialog modal-lg">
+    <div class="modal-content">
+
+      <div class="modal-header">
+        <h5 class="modal-title h4" id="myLargeModalLabel">Large modal</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        ...
+      </div>
+    </div>
+  </div>
+</div>
+
+<div class="modal fade bd-example-modal-sm" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
+  <div class="modal-dialog modal-sm">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title h4" id="mySmallModalLabel">Small modal</h5>
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <div class="modal-body">
+        ...
+      </div>
+    </div>
+  </div>
+</div>
+
+## Usage
+
+The modal plugin toggles your hidden content on demand, via data attributes or JavaScript. It also adds `.modal-open` to the `<body>` to override default scrolling behavior and generates a `.modal-backdrop` to provide a click area for dismissing shown modals when clicking outside the modal.
+
+### Via data attributes
+
+Activate a modal without writing JavaScript. Set `data-toggle="modal"` on a controller element, like a button, along with a `data-target="#foo"` or `href="#foo"` to target a specific modal to toggle.
+
+{% highlight html %}
+<button type="button" data-toggle="modal" data-target="#myModal">Launch modal</button>
+{% endhighlight %}
+
+### Via JavaScript
+
+Call a modal with id `myModal` with a single line of JavaScript:
+
+{% highlight js %}$('#myModal').modal(options){% endhighlight %}
+
+### Options
+
+Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-backdrop=""`.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 100px;">Name</th>
+      <th style="width: 50px;">Type</th>
+      <th style="width: 50px;">Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>backdrop</td>
+      <td>boolean or the string <code>'static'</code></td>
+      <td>true</td>
+      <td>Includes a modal-backdrop element. Alternatively, specify <code>static</code> for a backdrop which doesn't close the modal on click.</td>
+    </tr>
+    <tr>
+      <td>keyboard</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Closes the modal when escape key is pressed</td>
+    </tr>
+    <tr>
+      <td>focus</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Puts the focus on the modal when initialized.</td>
+    </tr>
+    <tr>
+      <td>show</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Shows the modal when initialized.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Methods
+
+{% include callout-danger-async-methods.md %}
+
+#### `.modal(options)`
+
+Activates your content as a modal. Accepts an optional options `object`.
+
+{% highlight js %}
+$('#myModal').modal({
+  keyboard: false
+})
+{% endhighlight %}
+
+#### `.modal('toggle')`
+
+Manually toggles a modal. **Returns to the caller before the modal has actually been shown or hidden** (i.e. before the `shown.bs.modal` or `hidden.bs.modal` event occurs).
+
+{% highlight js %}$('#myModal').modal('toggle'){% endhighlight %}
+
+#### `.modal('show')`
+
+Manually opens a modal. **Returns to the caller before the modal has actually been shown** (i.e. before the `shown.bs.modal` event occurs).
+
+{% highlight js %}$('#myModal').modal('show'){% endhighlight %}
+
+#### `.modal('hide')`
+
+Manually hides a modal. **Returns to the caller before the modal has actually been hidden** (i.e. before the `hidden.bs.modal` event occurs).
+
+{% highlight js %}$('#myModal').modal('hide'){% endhighlight %}
+
+#### `.modal('handleUpdate')`
+
+Manually readjust the modal's position if the height of a modal changes while it is open (i.e. in case a scrollbar appears).
+
+{% highlight js %}$('#myModal').modal('handleUpdate'){% endhighlight %}
+
+#### `.modal('dispose')`
+
+Destroys an element's modal.
+
+### Events
+
+Bootstrap's modal class exposes a few events for hooking into modal functionality. All modal events are fired at the modal itself (i.e. at the `<div class="modal">`).
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>show.bs.modal</td>
+      <td>This event fires immediately when the <code>show</code> instance method is called. If caused by a click, the clicked element is available as the <code>relatedTarget</code> property of the event.</td>
+    </tr>
+    <tr>
+      <td>shown.bs.modal</td>
+      <td>This event is fired when the modal has been made visible to the user (will wait for CSS transitions to complete). If caused by a click, the clicked element is available as the <code>relatedTarget</code> property of the event.</td>
+    </tr>
+    <tr>
+      <td>hide.bs.modal</td>
+      <td>This event is fired immediately when the <code>hide</code> instance method has been called.</td>
+    </tr>
+    <tr>
+      <td>hidden.bs.modal</td>
+      <td>This event is fired when the modal has finished being hidden from the user (will wait for CSS transitions to complete).</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('#myModal').on('hidden.bs.modal', function (e) {
+  // do something...
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/navbar.md b/vendor/twbs/bootstrap/site/docs/4.1/components/navbar.md
new file mode 100644
index 000000000..d56843691
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/navbar.md
@@ -0,0 +1,579 @@
+---
+layout: docs
+title: Navbar
+description: Documentation and examples for Bootstrap's powerful, responsive navigation header, the navbar. Includes support for branding, navigation, and more, including support for our collapse plugin.
+group: components
+toc: true
+---
+
+## How it works
+
+Here's what you need to know before getting started with the navbar:
+
+- Navbars require a wrapping `.navbar` with `.navbar-expand{-sm|-md|-lg|-xl}` for responsive collapsing and [color scheme](#color-schemes) classes.
+- Navbars and their contents are fluid by default. Use [optional containers](#containers) to limit their horizontal width.
+- Use our [spacing]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) and [flex]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/) utility classes for controlling spacing and alignment within navbars.
+- Navbars are responsive by default, but you can easily modify them to change that. Responsive behavior depends on our Collapse JavaScript plugin.
+- Navbars are hidden by default when printing. Force them to be printed by adding `.d-print` to the `.navbar`. See the [display]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/display/) utility class.
+- Ensure accessibility by using a `<nav>` element or, if using a more generic element such as a `<div>`, add a `role="navigation"` to every navbar to explicitly identify it as a landmark region for users of assistive technologies.
+
+Read on for an example and list of supported sub-components.
+
+## Supported content
+
+Navbars come with built-in support for a handful of sub-components. Choose from the following as needed:
+
+- `.navbar-brand` for your company, product, or project name.
+- `.navbar-nav` for a full-height and lightweight navigation (including support for dropdowns).
+- `.navbar-toggler` for use with our collapse plugin and other [navigation toggling](#responsive-behaviors) behaviors.
+- `.form-inline` for any form controls and actions.
+- `.navbar-text` for adding vertically centered strings of text.
+- `.collapse.navbar-collapse` for grouping and hiding navbar contents by a parent breakpoint.
+
+Here's an example of all the sub-components included in a responsive light-themed navbar that automatically collapses at the `lg` (large) breakpoint.
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+
+  <div class="collapse navbar-collapse" id="navbarSupportedContent">
+    <ul class="navbar-nav mr-auto">
+      <li class="nav-item active">
+        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Link</a>
+      </li>
+      <li class="nav-item dropdown">
+        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+          Dropdown
+        </a>
+        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
+          <a class="dropdown-item" href="#">Action</a>
+          <a class="dropdown-item" href="#">Another action</a>
+          <div class="dropdown-divider"></div>
+          <a class="dropdown-item" href="#">Something else here</a>
+        </div>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link disabled" href="#">Disabled</a>
+      </li>
+    </ul>
+    <form class="form-inline my-2 my-lg-0">
+      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+    </form>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+This example uses [color]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/colors/) (`bg-light`) and [spacing]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) (`my-2`, `my-lg-0`, `mr-sm-0`, `my-sm-0`) utility classes.
+
+### Brand
+
+The `.navbar-brand` can be applied to most elements, but an anchor works best as some elements might require utility classes or custom styles.
+
+{% capture example %}
+<!-- As a link -->
+<nav class="navbar navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+</nav>
+
+<!-- As a heading -->
+<nav class="navbar navbar-light bg-light">
+  <span class="navbar-brand mb-0 h1">Navbar</span>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+Adding images to the `.navbar-brand` will likely always require custom styles or utilities to properly size. Here are some examples to demonstrate.
+
+{% capture example %}
+<!-- Just an image -->
+<nav class="navbar navbar-light bg-light">
+  <a class="navbar-brand" href="#">
+    <img src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/brand/bootstrap-solid.svg" width="30" height="30" alt="">
+  </a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<!-- Image and text -->
+<nav class="navbar navbar-light bg-light">
+  <a class="navbar-brand" href="#">
+    <img src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/brand/bootstrap-solid.svg" width="30" height="30" class="d-inline-block align-top" alt="">
+    Bootstrap
+  </a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Nav
+
+Navbar navigation links build on our `.nav` options with their own modifier class and require the use of [toggler classes](#toggler) for proper responsive styling. **Navigation in navbars will also grow to occupy as much horizontal space as possible** to keep your navbar contents securely aligned.
+
+Active states—with `.active`—to indicate the current page can be applied directly to `.nav-link`s or their immediate parent `.nav-item`s.
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+  <div class="collapse navbar-collapse" id="navbarNav">
+    <ul class="navbar-nav">
+      <li class="nav-item active">
+        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Features</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Pricing</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link disabled" href="#">Disabled</a>
+      </li>
+    </ul>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+And because we use classes for our navs, you can avoid the list-based approach entirely if you like.
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+  <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
+    <div class="navbar-nav">
+      <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
+      <a class="nav-item nav-link" href="#">Features</a>
+      <a class="nav-item nav-link" href="#">Pricing</a>
+      <a class="nav-item nav-link disabled" href="#">Disabled</a>
+    </div>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+You may also utilize dropdowns in your navbar nav. Dropdown menus require a wrapping element for positioning, so be sure to use separate and nested elements for `.nav-item` and `.nav-link` as shown below.
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+  <div class="collapse navbar-collapse" id="navbarNavDropdown">
+    <ul class="navbar-nav">
+      <li class="nav-item active">
+        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Features</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Pricing</a>
+      </li>
+      <li class="nav-item dropdown">
+        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+          Dropdown link
+        </a>
+        <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
+          <a class="dropdown-item" href="#">Action</a>
+          <a class="dropdown-item" href="#">Another action</a>
+          <a class="dropdown-item" href="#">Something else here</a>
+        </div>
+      </li>
+    </ul>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Forms
+
+Place various form controls and components within a navbar with `.form-inline`.
+
+{% capture example %}
+<nav class="navbar navbar-light bg-light">
+  <form class="form-inline">
+    <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+    <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+  </form>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+Immediate children elements in `.navbar` use flex layout and will default to `justify-content: between`. Use additional [flex utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/) as needed to adjust this behavior.
+
+{% capture example %}
+<nav class="navbar navbar-light bg-light">
+  <a class="navbar-brand">Navbar</a>
+  <form class="form-inline">
+    <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+    <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+  </form>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+Input groups work, too:
+
+{% capture example %}
+<nav class="navbar navbar-light bg-light">
+  <form class="form-inline">
+    <div class="input-group">
+      <div class="input-group-prepend">
+        <span class="input-group-text" id="basic-addon1">@</span>
+      </div>
+      <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
+    </div>
+  </form>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+Various buttons are supported as part of these navbar forms, too. This is also a great reminder that vertical alignment utilities can be used to align different sized elements.
+
+{% capture example %}
+<nav class="navbar navbar-light bg-light">
+  <form class="form-inline">
+    <button class="btn btn-outline-success" type="button">Main button</button>
+    <button class="btn btn-sm btn-outline-secondary" type="button">Smaller button</button>
+  </form>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Text
+
+Navbars may contain bits of text with the help of `.navbar-text`. This class adjusts vertical alignment and horizontal spacing for strings of text.
+
+{% capture example %}
+<nav class="navbar navbar-light bg-light">
+  <span class="navbar-text">
+    Navbar text with an inline element
+  </span>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+Mix and match with other components and utilities as needed.
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar w/ text</a>
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+  <div class="collapse navbar-collapse" id="navbarText">
+    <ul class="navbar-nav mr-auto">
+      <li class="nav-item active">
+        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Features</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Pricing</a>
+      </li>
+    </ul>
+    <span class="navbar-text">
+      Navbar text with an inline element
+    </span>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Color schemes
+
+Theming the navbar has never been easier thanks to the combination of theming classes and `background-color` utilities. Choose from `.navbar-light` for use with light background colors, or `.navbar-dark` for dark background colors. Then, customize with `.bg-*` utilities.
+
+<div class="bd-example">
+  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+
+    <div class="collapse navbar-collapse" id="navbarColor01">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Features</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Pricing</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">About</a>
+        </li>
+      </ul>
+      <form class="form-inline">
+        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+        <button class="btn btn-outline-info my-2 my-sm-0" type="submit">Search</button>
+      </form>
+    </div>
+  </nav>
+
+  <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor02" aria-controls="navbarColor02" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+
+    <div class="collapse navbar-collapse" id="navbarColor02">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Features</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Pricing</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">About</a>
+        </li>
+      </ul>
+      <form class="form-inline">
+        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+        <button class="btn btn-outline-light my-2 my-sm-0" type="submit">Search</button>
+      </form>
+    </div>
+  </nav>
+
+  <nav class="navbar navbar-expand-lg navbar-light" style="background-color: #e3f2fd;">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor03" aria-controls="navbarColor03" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+
+    <div class="collapse navbar-collapse" id="navbarColor03">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Features</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Pricing</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">About</a>
+        </li>
+      </ul>
+      <form class="form-inline">
+        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+        <button class="btn btn-outline-primary my-2 my-sm-0" type="submit">Search</button>
+      </form>
+    </div>
+  </nav>
+</div>
+
+{% highlight html %}
+<nav class="navbar navbar-dark bg-dark">
+  <!-- Navbar content -->
+</nav>
+
+<nav class="navbar navbar-dark bg-primary">
+  <!-- Navbar content -->
+</nav>
+
+<nav class="navbar navbar-light" style="background-color: #e3f2fd;">
+  <!-- Navbar content -->
+</nav>
+{% endhighlight %}
+
+## Containers
+
+Although it's not required, you can wrap a navbar in a `.container` to center it on a page or add one within to only center the contents of a [fixed or static top navbar](#placement).
+
+{% capture example %}
+<div class="container">
+  <nav class="navbar navbar-expand-lg navbar-light bg-light">
+    <a class="navbar-brand" href="#">Navbar</a>
+  </nav>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+When the container is within your navbar, its horizontal padding is removed at breakpoints lower than your specified `.navbar-expand{-sm|-md|-lg|-xl}` class. This ensures we're not doubling up on padding unnecessarily on lower viewports when your navbar is collapsed.
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <div class="container">
+    <a class="navbar-brand" href="#">Navbar</a>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Placement
+
+Use our [position utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/position/) to place navbars in non-static positions. Choose from fixed to the top, fixed to the bottom, or stickied to the top (scrolls with the page until it reaches the top, then stays there). Fixed navbars use `position: fixed`, meaning they're pulled from the normal flow of the DOM and may require custom CSS (e.g., `padding-top` on the `<body>`) to prevent overlap with other elements.
+
+Also note that **`.sticky-top` uses `position: sticky`, which [isn't fully supported in every browser](https://caniuse.com/#feat=css-sticky)**.
+
+{% capture example %}
+<nav class="navbar navbar-light bg-light">
+  <a class="navbar-brand" href="#">Default</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<nav class="navbar fixed-top navbar-light bg-light">
+  <a class="navbar-brand" href="#">Fixed top</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<nav class="navbar fixed-bottom navbar-light bg-light">
+  <a class="navbar-brand" href="#">Fixed bottom</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<nav class="navbar sticky-top navbar-light bg-light">
+  <a class="navbar-brand" href="#">Sticky top</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Responsive behaviors
+
+Navbars can utilize `.navbar-toggler`, `.navbar-collapse`, and `.navbar-expand{-sm|-md|-lg|-xl}` classes to change when their content collapses behind a button. In combination with other utilities, you can easily choose when to show or hide particular elements.
+
+For navbars that never collapse, add the `.navbar-expand` class on the navbar. For navbars that always collapse, don't add any `.navbar-expand` class.
+
+### Toggler
+
+Navbar togglers are left-aligned by default, but should they follow a sibling element like a `.navbar-brand`, they'll automatically be aligned to the far right. Reversing your markup will reverse the placement of the toggler. Below are examples of different toggle styles.
+
+With no `.navbar-brand` shown in lowest breakpoint:
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+  <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
+    <a class="navbar-brand" href="#">Hidden brand</a>
+    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
+      <li class="nav-item active">
+        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Link</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link disabled" href="#">Disabled</a>
+      </li>
+    </ul>
+    <form class="form-inline my-2 my-lg-0">
+      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+    </form>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+With a brand name shown on the left and toggler on the right:
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+
+  <div class="collapse navbar-collapse" id="navbarTogglerDemo02">
+    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
+      <li class="nav-item active">
+        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Link</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link disabled" href="#">Disabled</a>
+      </li>
+    </ul>
+    <form class="form-inline my-2 my-lg-0">
+      <input class="form-control mr-sm-2" type="search" placeholder="Search">
+      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+    </form>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+With a toggler on the left and brand name on the right:
+
+{% capture example %}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
+    <span class="navbar-toggler-icon"></span>
+  </button>
+  <a class="navbar-brand" href="#">Navbar</a>
+
+  <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
+    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
+      <li class="nav-item active">
+        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#">Link</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link disabled" href="#">Disabled</a>
+      </li>
+    </ul>
+    <form class="form-inline my-2 my-lg-0">
+      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+    </form>
+  </div>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+### External content
+
+Sometimes you want to use the collapse plugin to trigger hidden content elsewhere on the page. Because our plugin works on the `id` and `data-target` matching, that's easily done!
+
+{% capture example %}
+<div class="pos-f-t">
+  <div class="collapse" id="navbarToggleExternalContent">
+    <div class="bg-dark p-4">
+      <h5 class="text-white h4">Collapsed content</h5>
+      <span class="text-muted">Toggleable via the navbar brand.</span>
+    </div>
+  </div>
+  <nav class="navbar navbar-dark bg-dark">
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggleExternalContent" aria-controls="navbarToggleExternalContent" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+  </nav>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/navs.md b/vendor/twbs/bootstrap/site/docs/4.1/components/navs.md
new file mode 100644
index 000000000..86173e9a2
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/navs.md
@@ -0,0 +1,658 @@
+---
+layout: docs
+title: Navs
+description: Documentation and examples for how to use Bootstrap's included navigation components.
+group: components
+toc: true
+---
+
+## Base nav
+
+Navigation available in Bootstrap share general markup and styles, from the base `.nav` class to the active and disabled states. Swap modifier classes to switch between each style.
+
+The base `.nav` component is built with flexbox and provide a strong foundation for building all types of navigation components. It includes some style overrides (for working with lists), some link padding for larger hit areas, and basic disabled styling.
+
+{% capture callout %}
+The base `.nav` component does not include any `.active` state. The following examples include the class, mainly to demonstrate that this particular class does not trigger any special styling.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+{% capture example %}
+<ul class="nav">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+Classes are used throughout, so your markup can be super flexible. Use `<ul>`s like above, or roll your own with say a `<nav>` element. Because the `.nav` uses `display: flex`, the nav links behave the same as nav items would, but without the extra markup.
+
+{% capture example %}
+<nav class="nav">
+  <a class="nav-link active" href="#">Active</a>
+  <a class="nav-link" href="#">Link</a>
+  <a class="nav-link" href="#">Link</a>
+  <a class="nav-link disabled" href="#">Disabled</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Available styles
+
+Change the style of `.nav`s component with modifiers and utilities. Mix and match as needed, or build your own.
+
+### Horizontal alignment
+
+Change the horizontal alignment of your nav with [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/layout/grid/#horizontal-alignment). By default, navs are left-aligned, but you can easily change them to center or right aligned.
+
+Centered with `.justify-content-center`:
+
+{% capture example %}
+<ul class="nav justify-content-center">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+Right-aligned with `.justify-content-end`:
+
+{% capture example %}
+<ul class="nav justify-content-end">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Vertical
+
+Stack your navigation by changing the flex item direction with the `.flex-column` utility. Need to stack them on some viewports but not others? Use the responsive versions (e.g., `.flex-sm-column`).
+
+{% capture example %}
+<ul class="nav flex-column">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+As always, vertical navigation is possible without `<ul>`s, too.
+
+{% capture example %}
+<nav class="nav flex-column">
+  <a class="nav-link active" href="#">Active</a>
+  <a class="nav-link" href="#">Link</a>
+  <a class="nav-link" href="#">Link</a>
+  <a class="nav-link disabled" href="#">Disabled</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Tabs
+
+Takes the basic nav from above and adds the `.nav-tabs` class to generate a tabbed interface. Use them to create tabbable regions with our [tab JavaScript plugin](#javascript-behavior).
+
+{% capture example %}
+<ul class="nav nav-tabs">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Pills
+
+Take that same HTML, but use `.nav-pills` instead:
+
+{% capture example %}
+<ul class="nav nav-pills">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Fill and justify
+
+Force your `.nav`'s contents to extend the full available width one of two modifier classes. To proportionately fill all available space with your `.nav-item`s, use `.nav-fill`. Notice that all horizontal space is occupied, but not every nav item has the same width.
+
+{% capture example %}
+<ul class="nav nav-pills nav-fill">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Longer nav link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+When using a `<nav>`-based navigation, be sure to include `.nav-item` on the anchors.
+
+{% capture example %}
+<nav class="nav nav-pills nav-fill">
+  <a class="nav-item nav-link active" href="#">Active</a>
+  <a class="nav-item nav-link" href="#">Link</a>
+  <a class="nav-item nav-link" href="#">Link</a>
+  <a class="nav-item nav-link disabled" href="#">Disabled</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+For equal-width elements, use `.nav-justified`. All horizontal space will be occupied by nav links, but unlike the `.nav-fill` above, every nav item will be the same width.
+
+{% capture example %}
+<nav class="nav nav-pills nav-justified">
+  <a class="nav-link active" href="#">Active</a>
+  <a class="nav-link" href="#">Longer nav link</a>
+  <a class="nav-link" href="#">Link</a>
+  <a class="nav-link disabled" href="#">Disabled</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+Similar to the `.nav-fill` example using a `<nav>`-based navigation, be sure to include `.nav-item` on the anchors.
+
+{% capture example %}
+<nav class="nav nav-pills nav-justified">
+  <a class="nav-item nav-link active" href="#">Active</a>
+  <a class="nav-item nav-link" href="#">Link</a>
+  <a class="nav-item nav-link" href="#">Link</a>
+  <a class="nav-item nav-link disabled" href="#">Disabled</a>
+</nav>
+
+{% endcapture %}
+{% include example.html content=example %}
+## Working with flex utilities
+
+If you need responsive nav variations, consider using a series of [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/). While more verbose, these utilities offer greater customization across responsive breakpoints. In the example below, our nav will be stacked on the lowest breakpoint, then adapt to a horizontal layout that fills the available width starting from the small breakpoint.
+
+{% capture example %}
+<nav class="nav nav-pills flex-column flex-sm-row">
+  <a class="flex-sm-fill text-sm-center nav-link active" href="#">Active</a>
+  <a class="flex-sm-fill text-sm-center nav-link" href="#">Link</a>
+  <a class="flex-sm-fill text-sm-center nav-link" href="#">Link</a>
+  <a class="flex-sm-fill text-sm-center nav-link disabled" href="#">Disabled</a>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Regarding accessibility
+
+If you're using navs to provide a navigation bar, be sure to add a `role="navigation"` to the most logical parent container of the `<ul>`, or wrap a `<nav>` element around the whole navigation. Do not add the role to the `<ul>` itself, as this would prevent it from being announced as an actual list by assistive technologies.
+
+Note that navigation bars, even if visually styled as tabs with the `.nav-tabs` class, should **not** be given `role="tablist"`, `role="tab"` or `role="tabpanel"` attributes. These are only appropriate for dynamic tabbed interfaces, as described in the [<abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr> Authoring Practices](https://www.w3.org/TR/wai-aria-practices/#tabpanel). See [JavaScript behavior](#javascript-behavior) for dynamic tabbed interfaces in this section for an example.
+
+## Using dropdowns
+
+Add dropdown menus with a little extra HTML and the [dropdowns JavaScript plugin]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/dropdowns/#usage).
+
+### Tabs with dropdowns
+
+{% capture example %}
+<ul class="nav nav-tabs">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item dropdown">
+    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Pills with dropdowns
+
+{% capture example %}
+<ul class="nav nav-pills">
+  <li class="nav-item">
+    <a class="nav-link active" href="#">Active</a>
+  </li>
+  <li class="nav-item dropdown">
+    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+    <div class="dropdown-menu">
+      <a class="dropdown-item" href="#">Action</a>
+      <a class="dropdown-item" href="#">Another action</a>
+      <a class="dropdown-item" href="#">Something else here</a>
+      <div class="dropdown-divider"></div>
+      <a class="dropdown-item" href="#">Separated link</a>
+    </div>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" href="#">Link</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link disabled" href="#">Disabled</a>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+## JavaScript behavior
+
+Use the tab JavaScript plugin—include it individually or through the compiled `bootstrap.js` file—to extend our navigational tabs and pills to create tabbable panes of local content, even via dropdown menus.
+
+If you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util).
+
+Dynamic tabbed interfaces, as described in the [<abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr> Authoring Practices](https://www.w3.org/TR/wai-aria-practices/#tabpanel), require `role="tablist"`, `role="tab"`, `role="tabpanel"`, and additional `aria-` attributes in order to convey their structure, functionality and current state to users of assistive technologies (such as screen readers).
+
+Note that dynamic tabbed interfaces should <em>not</em> contain dropdown menus, as this causes both usability and accessibility issues. From a usability perspective, the fact that the currently displayed tab's trigger element is not immediately visible (as it's inside the closed dropdown menu) can cause confusion. From an accessibility point of view, there is currently no sensible way to map this sort of construct to a standard WAI ARIA pattern, meaning that it cannot be easily made understandable to users of assistive technologies.
+
+<div class="bd-example bd-example-tabs">
+  <ul class="nav nav-tabs" id="myTab" role="tablist">
+    <li class="nav-item">
+      <a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
+    </li>
+    <li class="nav-item">
+      <a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
+    </li>
+    <li class="nav-item">
+      <a class="nav-link" id="contact-tab" data-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a>
+    </li>
+  </ul>
+  <div class="tab-content" id="myTabContent">
+    <div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">
+      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+    </div>
+    <div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">
+      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+    </div>
+    <div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="contact-tab">
+      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<ul class="nav nav-tabs" id="myTab" role="tablist">
+  <li class="nav-item">
+    <a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="contact-tab" data-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a>
+  </li>
+</ul>
+<div class="tab-content" id="myTabContent">
+  <div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
+  <div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
+  <div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="contact-tab">...</div>
+</div>
+{% endhighlight %}
+
+To help fit your needs, this works with `<ul>`-based markup, as shown above, or with any arbitrary "roll your own" markup. Note that if you're using `<nav>`, you shouldn't add `role="tablist"` directly to it, as this would override the element's native role as a navigation landmark. Instead, switch to an alternative element (in the example below, a simple `<div>`) and wrap the `<nav>` around it.
+
+<div class="bd-example bd-example-tabs">
+  <nav>
+    <div class="nav nav-tabs" id="nav-tab" role="tablist">
+      <a class="nav-item nav-link active" id="nav-home-tab" data-toggle="tab" href="#nav-home" role="tab" aria-controls="nav-home" aria-selected="true">Home</a>
+      <a class="nav-item nav-link" id="nav-profile-tab" data-toggle="tab" href="#nav-profile" role="tab" aria-controls="nav-profile" aria-selected="false">Profile</a>
+      <a class="nav-item nav-link" id="nav-contact-tab" data-toggle="tab" href="#nav-contact" role="tab" aria-controls="nav-contact" aria-selected="false">Contact</a>
+    </div>
+  </nav>
+  <div class="tab-content" id="nav-tabContent">
+    <div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">
+      <p>Et et consectetur ipsum labore excepteur est proident excepteur ad velit occaecat qui minim occaecat veniam. Fugiat veniam incididunt anim aliqua enim pariatur veniam sunt est aute sit dolor anim. Velit non irure adipisicing aliqua ullamco irure incididunt irure non esse consectetur nostrud minim non minim occaecat. Amet duis do nisi duis veniam non est eiusmod tempor incididunt tempor dolor ipsum in qui sit. Exercitation mollit sit culpa nisi culpa non adipisicing reprehenderit do dolore. Duis reprehenderit occaecat anim ullamco ad duis occaecat ex.</p>
+    </div>
+    <div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">
+      <p>Nulla est ullamco ut irure incididunt nulla Lorem Lorem minim irure officia enim reprehenderit. Magna duis labore cillum sint adipisicing exercitation ipsum. Nostrud ut anim non exercitation velit laboris fugiat cupidatat. Commodo esse dolore fugiat sint velit ullamco magna consequat voluptate minim amet aliquip ipsum aute laboris nisi. Labore labore veniam irure irure ipsum pariatur mollit magna in cupidatat dolore magna irure esse tempor ad mollit. Dolore commodo nulla minim amet ipsum officia consectetur amet ullamco voluptate nisi commodo ea sit eu.</p>
+    </div>
+    <div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">
+      <p>Sint sit mollit irure quis est nostrud cillum consequat Lorem esse do quis dolor esse fugiat sunt do. Eu ex commodo veniam Lorem aliquip laborum occaecat qui Lorem esse mollit dolore anim cupidatat. Deserunt officia id Lorem nostrud aute id commodo elit eiusmod enim irure amet eiusmod qui reprehenderit nostrud tempor. Fugiat ipsum excepteur in aliqua non et quis aliquip ad irure in labore cillum elit enim. Consequat aliquip incididunt ipsum et minim laborum laborum laborum et cillum labore. Deserunt adipisicing cillum id nulla minim nostrud labore eiusmod et amet. Laboris consequat consequat commodo non ut non aliquip reprehenderit nulla anim occaecat. Sunt sit ullamco reprehenderit irure ea ullamco Lorem aute nostrud magna.</p>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<nav>
+  <div class="nav nav-tabs" id="nav-tab" role="tablist">
+    <a class="nav-item nav-link active" id="nav-home-tab" data-toggle="tab" href="#nav-home" role="tab" aria-controls="nav-home" aria-selected="true">Home</a>
+    <a class="nav-item nav-link" id="nav-profile-tab" data-toggle="tab" href="#nav-profile" role="tab" aria-controls="nav-profile" aria-selected="false">Profile</a>
+    <a class="nav-item nav-link" id="nav-contact-tab" data-toggle="tab" href="#nav-contact" role="tab" aria-controls="nav-contact" aria-selected="false">Contact</a>
+  </div>
+</nav>
+<div class="tab-content" id="nav-tabContent">
+  <div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">...</div>
+  <div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">...</div>
+  <div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">...</div>
+</div>
+{% endhighlight %}
+
+The tabs plugin also works with pills.
+
+<div class="bd-example bd-example-tabs">
+  <ul class="nav nav-pills mb-3" id="pills-tab" role="tablist">
+    <li class="nav-item">
+      <a class="nav-link active" id="pills-home-tab" data-toggle="pill" href="#pills-home" role="tab" aria-controls="pills-home" aria-selected="true">Home</a>
+    </li>
+    <li class="nav-item">
+      <a class="nav-link" id="pills-profile-tab" data-toggle="pill" href="#pills-profile" role="tab" aria-controls="pills-profile" aria-selected="false">Profile</a>
+    </li>
+    <li class="nav-item">
+      <a class="nav-link" id="pills-contact-tab" data-toggle="pill" href="#pills-contact" role="tab" aria-controls="pills-contact" aria-selected="false">Contact</a>
+    </li>
+  </ul>
+  <div class="tab-content" id="pills-tabContent">
+    <div class="tab-pane fade show active" id="pills-home" role="tabpanel" aria-labelledby="pills-home-tab">
+      <p>Consequat occaecat ullamco amet non eiusmod nostrud dolore irure incididunt est duis anim sunt officia. Fugiat velit proident aliquip nisi incididunt nostrud exercitation proident est nisi. Irure magna elit commodo anim ex veniam culpa eiusmod id nostrud sit cupidatat in veniam ad. Eiusmod consequat eu adipisicing minim anim aliquip cupidatat culpa excepteur quis. Occaecat sit eu exercitation irure Lorem incididunt nostrud.</p>
+    </div>
+    <div class="tab-pane fade" id="pills-profile" role="tabpanel" aria-labelledby="pills-profile-tab">
+      <p>Ad pariatur nostrud pariatur exercitation ipsum ipsum culpa mollit commodo mollit ex. Aute sunt incididunt amet commodo est sint nisi deserunt pariatur do. Aliquip ex eiusmod voluptate exercitation cillum id incididunt elit sunt. Qui minim sit magna Lorem id et dolore velit Lorem amet exercitation duis deserunt. Anim id labore elit adipisicing ut in id occaecat pariatur ut ullamco ea tempor duis.</p>
+    </div>
+    <div class="tab-pane fade" id="pills-contact" role="tabpanel" aria-labelledby="pills-contact-tab">
+      <p>Est quis nulla laborum officia ad nisi ex nostrud culpa Lorem excepteur aliquip dolor aliqua irure ex. Nulla ut duis ipsum nisi elit fugiat commodo sunt reprehenderit laborum veniam eu veniam. Eiusmod minim exercitation fugiat irure ex labore incididunt do fugiat commodo aliquip sit id deserunt reprehenderit aliquip nostrud. Amet ex cupidatat excepteur aute veniam incididunt mollit cupidatat esse irure officia elit do ipsum ullamco Lorem. Ullamco ut ad minim do mollit labore ipsum laboris ipsum commodo sunt tempor enim incididunt. Commodo quis sunt dolore aliquip aute tempor irure magna enim minim reprehenderit. Ullamco consectetur culpa veniam sint cillum aliqua incididunt velit ullamco sunt ullamco quis quis commodo voluptate. Mollit nulla nostrud adipisicing aliqua cupidatat aliqua pariatur mollit voluptate voluptate consequat non.</p>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<ul class="nav nav-pills mb-3" id="pills-tab" role="tablist">
+  <li class="nav-item">
+    <a class="nav-link active" id="pills-home-tab" data-toggle="pill" href="#pills-home" role="tab" aria-controls="pills-home" aria-selected="true">Home</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="pills-profile-tab" data-toggle="pill" href="#pills-profile" role="tab" aria-controls="pills-profile" aria-selected="false">Profile</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="pills-contact-tab" data-toggle="pill" href="#pills-contact" role="tab" aria-controls="pills-contact" aria-selected="false">Contact</a>
+  </li>
+</ul>
+<div class="tab-content" id="pills-tabContent">
+  <div class="tab-pane fade show active" id="pills-home" role="tabpanel" aria-labelledby="pills-home-tab">...</div>
+  <div class="tab-pane fade" id="pills-profile" role="tabpanel" aria-labelledby="pills-profile-tab">...</div>
+  <div class="tab-pane fade" id="pills-contact" role="tabpanel" aria-labelledby="pills-contact-tab">...</div>
+</div>
+{% endhighlight %}
+
+And with vertical pills.
+
+<div class="bd-example bd-example-tabs">
+  <div class="row">
+    <div class="col-3">
+      <div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
+        <a class="nav-link active" id="v-pills-home-tab" data-toggle="pill" href="#v-pills-home" role="tab" aria-controls="v-pills-home" aria-selected="true">Home</a>
+        <a class="nav-link" id="v-pills-profile-tab" data-toggle="pill" href="#v-pills-profile" role="tab" aria-controls="v-pills-profile" aria-selected="false">Profile</a>
+        <a class="nav-link" id="v-pills-messages-tab" data-toggle="pill" href="#v-pills-messages" role="tab" aria-controls="v-pills-messages" aria-selected="false">Messages</a>
+        <a class="nav-link" id="v-pills-settings-tab" data-toggle="pill" href="#v-pills-settings" role="tab" aria-controls="v-pills-settings" aria-selected="false">Settings</a>
+      </div>
+    </div>
+    <div class="col-9">
+      <div class="tab-content" id="v-pills-tabContent">
+        <div class="tab-pane fade show active" id="v-pills-home" role="tabpanel" aria-labelledby="v-pills-home-tab">
+          <p>Cillum ad ut irure tempor velit nostrud occaecat ullamco aliqua anim Lorem sint. Veniam sint duis incididunt do esse magna mollit excepteur laborum qui. Id id reprehenderit sit est eu aliqua occaecat quis et velit excepteur laborum mollit dolore eiusmod. Ipsum dolor in occaecat commodo et voluptate minim reprehenderit mollit pariatur. Deserunt non laborum enim et cillum eu deserunt excepteur ea incididunt minim occaecat.</p>
+        </div>
+        <div class="tab-pane fade" id="v-pills-profile" role="tabpanel" aria-labelledby="v-pills-profile-tab">
+          <p>Culpa dolor voluptate do laboris laboris irure reprehenderit id incididunt duis pariatur mollit aute magna pariatur consectetur. Eu veniam duis non ut dolor deserunt commodo et minim in quis laboris ipsum velit id veniam. Quis ut consectetur adipisicing officia excepteur non sit. Ut et elit aliquip labore Lorem enim eu. Ullamco mollit occaecat dolore ipsum id officia mollit qui esse anim eiusmod do sint minim consectetur qui.</p>
+        </div>
+        <div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab">
+          <p>Fugiat id quis dolor culpa eiusmod anim velit excepteur proident dolor aute qui magna. Ad proident laboris ullamco esse anim Lorem Lorem veniam quis Lorem irure occaecat velit nostrud magna nulla. Velit et et proident Lorem do ea tempor officia dolor. Reprehenderit Lorem aliquip labore est magna commodo est ea veniam consectetur.</p>
+        </div>
+        <div class="tab-pane fade" id="v-pills-settings" role="tabpanel" aria-labelledby="v-pills-settings-tab">
+          <p>Eu dolore ea ullamco dolore Lorem id cupidatat excepteur reprehenderit consectetur elit id dolor proident in cupidatat officia. Voluptate excepteur commodo labore nisi cillum duis aliqua do. Aliqua amet qui mollit consectetur nulla mollit velit aliqua veniam nisi id do Lorem deserunt amet. Culpa ullamco sit adipisicing labore officia magna elit nisi in aute tempor commodo eiusmod.</p>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="row">
+  <div class="col-3">
+    <div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
+      <a class="nav-link active" id="v-pills-home-tab" data-toggle="pill" href="#v-pills-home" role="tab" aria-controls="v-pills-home" aria-selected="true">Home</a>
+      <a class="nav-link" id="v-pills-profile-tab" data-toggle="pill" href="#v-pills-profile" role="tab" aria-controls="v-pills-profile" aria-selected="false">Profile</a>
+      <a class="nav-link" id="v-pills-messages-tab" data-toggle="pill" href="#v-pills-messages" role="tab" aria-controls="v-pills-messages" aria-selected="false">Messages</a>
+      <a class="nav-link" id="v-pills-settings-tab" data-toggle="pill" href="#v-pills-settings" role="tab" aria-controls="v-pills-settings" aria-selected="false">Settings</a>
+    </div>
+  </div>
+  <div class="col-9">
+    <div class="tab-content" id="v-pills-tabContent">
+      <div class="tab-pane fade show active" id="v-pills-home" role="tabpanel" aria-labelledby="v-pills-home-tab">...</div>
+      <div class="tab-pane fade" id="v-pills-profile" role="tabpanel" aria-labelledby="v-pills-profile-tab">...</div>
+      <div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab">...</div>
+      <div class="tab-pane fade" id="v-pills-settings" role="tabpanel" aria-labelledby="v-pills-settings-tab">...</div>
+    </div>
+  </div>
+</div>
+{% endhighlight %}
+
+### Using data attributes
+
+You can activate a tab or pill navigation without writing any JavaScript by simply specifying `data-toggle="tab"` or `data-toggle="pill"` on an element. Use these data attributes on `.nav-tabs` or `.nav-pills`.
+
+{% highlight html %}
+<!-- Nav tabs -->
+<ul class="nav nav-tabs" id="myTab" role="tablist">
+  <li class="nav-item">
+    <a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="messages-tab" data-toggle="tab" href="#messages" role="tab" aria-controls="messages" aria-selected="false">Messages</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="settings-tab" data-toggle="tab" href="#settings" role="tab" aria-controls="settings" aria-selected="false">Settings</a>
+  </li>
+</ul>
+
+<!-- Tab panes -->
+<div class="tab-content">
+  <div class="tab-pane active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
+  <div class="tab-pane" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
+  <div class="tab-pane" id="messages" role="tabpanel" aria-labelledby="messages-tab">...</div>
+  <div class="tab-pane" id="settings" role="tabpanel" aria-labelledby="settings-tab">...</div>
+</div>
+{% endhighlight %}
+
+### Via JavaScript
+
+Enable tabbable tabs via JavaScript (each tab needs to be activated individually):
+
+{% highlight js %}
+$('#myTab a').on('click', function (e) {
+  e.preventDefault()
+  $(this).tab('show')
+})
+{% endhighlight %}
+
+You can activate individual tabs in several ways:
+
+{% highlight js %}
+$('#myTab a[href="#profile"]').tab('show') // Select tab by name
+$('#myTab li:first-child a').tab('show') // Select first tab
+$('#myTab li:last-child a').tab('show') // Select last tab
+$('#myTab li:nth-child(3) a').tab('show') // Select third tab
+{% endhighlight %}
+
+### Fade effect
+
+To make tabs fade in, add `.fade` to each `.tab-pane`. The first tab pane must also have `.show` to make the initial content visible.
+
+{% highlight html %}
+<div class="tab-content">
+  <div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
+  <div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
+  <div class="tab-pane fade" id="messages" role="tabpanel" aria-labelledby="messages-tab">...</div>
+  <div class="tab-pane fade" id="settings" role="tabpanel" aria-labelledby="settings-tab">...</div>
+</div>
+{% endhighlight %}
+
+### Methods
+
+{% include callout-danger-async-methods.md %}
+
+#### $().tab
+
+Activates a tab element and content container. Tab should have either a `data-target` or an `href` targeting a container node in the DOM.
+
+{% highlight html %}
+<ul class="nav nav-tabs" id="myTab" role="tablist">
+  <li class="nav-item">
+    <a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="messages-tab" data-toggle="tab" href="#messages" role="tab" aria-controls="messages" aria-selected="false">Messages</a>
+  </li>
+  <li class="nav-item">
+    <a class="nav-link" id="settings-tab" data-toggle="tab" href="#settings" role="tab" aria-controls="settings" aria-selected="false">Settings</a>
+  </li>
+</ul>
+
+<div class="tab-content">
+  <div class="tab-pane active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
+  <div class="tab-pane" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
+  <div class="tab-pane" id="messages" role="tabpanel" aria-labelledby="messages-tab">...</div>
+  <div class="tab-pane" id="settings" role="tabpanel" aria-labelledby="settings-tab">...</div>
+</div>
+
+<script>
+  $(function () {
+    $('#myTab li:last-child a').tab('show')
+  })
+</script>
+{% endhighlight %}
+
+#### .tab('show')
+
+Selects the given tab and shows its associated pane. Any other tab that was previously selected becomes unselected and its associated pane is hidden. **Returns to the caller before the tab pane has actually been shown** (i.e. before the `shown.bs.tab` event occurs).
+
+{% highlight js %}
+$('#someTab').tab('show')
+{% endhighlight %}
+
+#### .tab('dispose')
+
+Destroys an element's tab.
+
+### Events
+
+When showing a new tab, the events fire in the following order:
+
+1. `hide.bs.tab` (on the current active tab)
+2. `show.bs.tab` (on the to-be-shown tab)
+3. `hidden.bs.tab` (on the previous active tab, the same one as for the `hide.bs.tab` event)
+4. `shown.bs.tab` (on the newly-active just-shown tab, the same one as for the `show.bs.tab` event)
+
+If no tab was already active, then the `hide.bs.tab` and `hidden.bs.tab` events will not be fired.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>show.bs.tab</td>
+      <td>This event fires on tab show, but before the new tab has been shown. Use <code>event.target</code> and <code>event.relatedTarget</code> to target the active tab and the previous active tab (if available) respectively.</td>
+    </tr>
+    <tr>
+      <td>shown.bs.tab</td>
+      <td>This event fires on tab show after a tab has been shown. Use <code>event.target</code> and <code>event.relatedTarget</code> to target the active tab and the previous active tab (if available) respectively.</td>
+    </tr>
+    <tr>
+      <td>hide.bs.tab</td>
+      <td>This event fires when a new tab is to be shown (and thus the previous active tab is to be hidden). Use <code>event.target</code> and <code>event.relatedTarget</code> to target the current active tab and the new soon-to-be-active tab, respectively.</td>
+    </tr>
+    <tr>
+      <td>hidden.bs.tab</td>
+      <td>This event fires after a new tab is shown (and thus the previous active tab is hidden). Use <code>event.target</code> and <code>event.relatedTarget</code> to target the previous active tab and the new active tab, respectively.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
+  e.target // newly activated tab
+  e.relatedTarget // previous active tab
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/pagination.md b/vendor/twbs/bootstrap/site/docs/4.1/components/pagination.md
new file mode 100644
index 000000000..b20b0624d
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/pagination.md
@@ -0,0 +1,170 @@
+---
+layout: docs
+title: Pagination
+description: Documentation and examples for showing pagination to indicate a series of related content exists across multiple pages.
+group: components
+toc: true
+---
+
+## Overview
+
+We use a large block of connected links for our pagination, making links hard to miss and easily scalable—all while providing large hit areas. Pagination is built with list HTML elements so screen readers can announce the number of available links. Use a wrapping `<nav>` element to identify it as a navigation section to screen readers and other assistive technologies.
+
+In addition, as pages likely have more than one such navigation section, it's advisable to provide a descriptive `aria-label` for the `<nav>` to reflect its purpose. For example, if the pagination component is used to navigate between a set of search results, an appropriate label could be `aria-label="Search results pages"`.
+
+{% capture example %}
+<nav aria-label="Page navigation example">
+  <ul class="pagination">
+    <li class="page-item"><a class="page-link" href="#">Previous</a></li>
+    <li class="page-item"><a class="page-link" href="#">1</a></li>
+    <li class="page-item"><a class="page-link" href="#">2</a></li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+    <li class="page-item"><a class="page-link" href="#">Next</a></li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Working with icons
+
+Looking to use an icon or symbol in place of text for some pagination links? Be sure to provide proper screen reader support with `aria` attributes and the `.sr-only` utility.
+
+{% capture example %}
+<nav aria-label="Page navigation example">
+  <ul class="pagination">
+    <li class="page-item">
+      <a class="page-link" href="#" aria-label="Previous">
+        <span aria-hidden="true">&laquo;</span>
+        <span class="sr-only">Previous</span>
+      </a>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">1</a></li>
+    <li class="page-item"><a class="page-link" href="#">2</a></li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+    <li class="page-item">
+      <a class="page-link" href="#" aria-label="Next">
+        <span aria-hidden="true">&raquo;</span>
+        <span class="sr-only">Next</span>
+      </a>
+    </li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Disabled and active states
+
+Pagination links are customizable for different circumstances. Use `.disabled` for links that appear un-clickable and `.active` to indicate the current page.
+
+While the `.disabled` class uses `pointer-events: none` to _try_ to disable the link functionality of `<a>`s, that CSS property is not yet standardized and doesn't account for keyboard navigation. As such, you should always add `tabindex="-1"` on disabled links and use custom JavaScript to fully disable their functionality.
+
+{% capture example %}
+<nav aria-label="...">
+  <ul class="pagination">
+    <li class="page-item disabled">
+      <a class="page-link" href="#" tabindex="-1">Previous</a>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">1</a></li>
+    <li class="page-item active">
+      <a class="page-link" href="#">2 <span class="sr-only">(current)</span></a>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+    <li class="page-item">
+      <a class="page-link" href="#">Next</a>
+    </li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+You can optionally swap out active or disabled anchors for `<span>`, or omit the anchor in the case of the prev/next arrows, to remove click functionality and prevent keyboard focus while retaining intended styles.
+
+{% capture example %}
+<nav aria-label="...">
+  <ul class="pagination">
+    <li class="page-item disabled">
+      <span class="page-link">Previous</span>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">1</a></li>
+    <li class="page-item active">
+      <span class="page-link">
+        2
+        <span class="sr-only">(current)</span>
+      </span>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+    <li class="page-item">
+      <a class="page-link" href="#">Next</a>
+    </li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Sizing
+
+Fancy larger or smaller pagination? Add `.pagination-lg` or `.pagination-sm` for additional sizes.
+
+{% capture example %}
+<nav aria-label="...">
+  <ul class="pagination pagination-lg">
+    <li class="page-item disabled">
+      <a class="page-link" href="#" tabindex="-1">1</a>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">2</a></li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<nav aria-label="...">
+  <ul class="pagination pagination-sm">
+    <li class="page-item disabled">
+      <a class="page-link" href="#" tabindex="-1">1</a>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">2</a></li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Alignment
+
+Change the alignment of pagination components with [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/).
+
+{% capture example %}
+<nav aria-label="Page navigation example">
+  <ul class="pagination justify-content-center">
+    <li class="page-item disabled">
+      <a class="page-link" href="#" tabindex="-1">Previous</a>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">1</a></li>
+    <li class="page-item"><a class="page-link" href="#">2</a></li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+    <li class="page-item">
+      <a class="page-link" href="#">Next</a>
+    </li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<nav aria-label="Page navigation example">
+  <ul class="pagination justify-content-end">
+    <li class="page-item disabled">
+      <a class="page-link" href="#" tabindex="-1">Previous</a>
+    </li>
+    <li class="page-item"><a class="page-link" href="#">1</a></li>
+    <li class="page-item"><a class="page-link" href="#">2</a></li>
+    <li class="page-item"><a class="page-link" href="#">3</a></li>
+    <li class="page-item">
+      <a class="page-link" href="#">Next</a>
+    </li>
+  </ul>
+</nav>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/popovers.md b/vendor/twbs/bootstrap/site/docs/4.1/components/popovers.md
new file mode 100644
index 000000000..874509306
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/popovers.md
@@ -0,0 +1,353 @@
+---
+layout: docs
+title: Popovers
+description: Documentation and examples for adding Bootstrap popovers, like those found in iOS, to any element on your site.
+group: components
+toc: true
+---
+
+## Overview
+
+Things to know when using the popover plugin:
+
+- Popovers rely on the 3rd party library [Popper.js](https://popper.js.org/) for positioning. You must include [popper.min.js]({{ site.cdn.popper }}) before bootstrap.js or use `bootstrap.bundle.min.js` / `bootstrap.bundle.js` which contains Popper.js in order for popovers to work!
+- Popovers require the [tooltip plugin]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/tooltips/) as a dependency.
+- If you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util).
+- Popovers are opt-in for performance reasons, so **you must initialize them yourself**.
+- Zero-length `title` and `content` values will never show a popover.
+- Specify `container: 'body'` to avoid rendering problems in more complex components (like our input groups, button groups, etc).
+- Triggering popovers on hidden elements will not work.
+- Popovers for `.disabled` or `disabled` elements must be triggered on a wrapper element.
+- When triggered from anchors that wrap across multiple lines, popovers will be centered between the anchors' overall width. Use `.text-nowrap` on your `<a>`s to avoid this behavior.
+- Popovers must be hidden before their corresponding elements have been removed from the DOM.
+
+Keep reading to see how popovers work with some examples.
+
+## Example: Enable popovers everywhere
+
+One way to initialize all popovers on a page would be to select them by their `data-toggle` attribute:
+
+{% highlight js %}
+$(function () {
+  $('[data-toggle="popover"]').popover()
+})
+{% endhighlight %}
+
+## Example: Using the `container` option
+
+When you have some styles on a parent element that interfere with a popover, you'll want to specify a custom `container` so that the popover's HTML appears within that element instead.
+
+{% highlight js %}
+$(function () {
+  $('.example-popover').popover({
+    container: 'body'
+  })
+})
+{% endhighlight %}
+
+## Example
+
+{% capture example %}
+<button type="button" class="btn btn-lg btn-danger" data-toggle="popover" title="Popover title" data-content="And here's some amazing content. It's very engaging. Right?">Click to toggle popover</button>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Four directions
+
+Four options are available: top, right, bottom, and left aligned.
+
+<div class="bd-example popover-demo">
+  <div class="bd-example-popovers">
+    <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="top" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+      Popover on top
+    </button>
+    <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="right" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+      Popover on right
+    </button>
+    <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="bottom" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+      Popover on bottom
+    </button>
+    <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="left" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+      Popover on left
+    </button>
+  </div>
+</div>
+
+{% highlight html %}
+<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="top" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+  Popover on top
+</button>
+
+<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="right" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+  Popover on right
+</button>
+
+<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="bottom" data-content="Vivamus
+sagittis lacus vel augue laoreet rutrum faucibus.">
+  Popover on bottom
+</button>
+
+<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="left" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+  Popover on left
+</button>
+{% endhighlight %}
+
+### Dismiss on next click
+
+Use the `focus` trigger to dismiss popovers on the user's next click of a different element than the toggle element.
+
+{% capture callout %}
+#### Specific markup required for dismiss-on-next-click
+
+For proper cross-browser and cross-platform behavior, you must use the `<a>` tag, _not_ the `<button>` tag, and you also must include a [`tabindex`](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex) attribute.
+{% endcapture %}
+{% include callout.html content=callout type="danger" %}
+
+{% capture example %}
+<a tabindex="0" class="btn btn-lg btn-danger" role="button" data-toggle="popover" data-trigger="focus" title="Dismissible popover" data-content="And here's some amazing content. It's very engaging. Right?">Dismissible popover</a>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% highlight js %}
+$('.popover-dismiss').popover({
+  trigger: 'focus'
+})
+{% endhighlight %}
+
+### Disabled elements
+
+Elements with the `disabled` attribute aren't interactive, meaning users cannot hover or click them to trigger a popover (or tooltip). As a workaround, you'll want to trigger the popover from a wrapper `<div>` or `<span>` and override the `pointer-events` on the disabled element.
+
+For disabled popover triggers, you may also prefer `data-trigger="hover"` so that the popover appears as immediate visual feedback to your users as they may not expect to _click_ on a disabled element.
+
+{% capture example %}
+<span class="d-inline-block" data-toggle="popover" data-content="Disabled popover">
+  <button class="btn btn-primary" style="pointer-events: none;" type="button" disabled>Disabled button</button>
+</span>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Usage
+
+Enable popovers via JavaScript:
+
+{% highlight js %}$('#example').popover(options){% endhighlight %}
+
+### Options
+
+Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-animation=""`.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 100px;">Name</th>
+      <th style="width: 100px;">Type</th>
+      <th style="width: 50px;">Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>animation</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Apply a CSS fade transition to the popover</td>
+    </tr>
+    <tr>
+      <td>container</td>
+      <td>string | element | false</td>
+      <td>false</td>
+      <td>
+        <p>Appends the popover to a specific element. Example: <code>container: 'body'</code>. This option is particularly useful in that it allows you to position the popover in the flow of the document near the triggering element - which will prevent the popover from floating away from the triggering element during a window resize.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>content</td>
+      <td>string | element | function</td>
+      <td>''</td>
+      <td>
+        <p>Default content value if <code>data-content</code> attribute isn't present.</p>
+        <p>If a function is given, it will be called with its <code>this</code> reference set to the element that the popover is attached to.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>delay</td>
+      <td>number | object</td>
+      <td>0</td>
+      <td>
+        <p>Delay showing and hiding the popover (ms) - does not apply to manual trigger type</p>
+        <p>If a number is supplied, delay is applied to both hide/show</p>
+        <p>Object structure is: <code>delay: { "show": 500, "hide": 100 }</code></p>
+      </td>
+    </tr>
+    <tr>
+      <td>html</td>
+      <td>boolean</td>
+      <td>false</td>
+      <td>Insert HTML into the popover. If false, jQuery's <code>text</code> method will be used to insert content into the DOM. Use text if you're worried about XSS attacks.</td>
+    </tr>
+    <tr>
+      <td>placement</td>
+      <td>string | function</td>
+      <td>'right'</td>
+      <td>
+        <p>How to position the popover - auto | top | bottom | left | right.<br>When <code>auto</code> is specified, it will dynamically reorient the popover.</p>
+        <p>When a function is used to determine the placement, it is called with the popover DOM node as its first argument and the triggering element DOM node as its second. The <code>this</code> context is set to the popover instance.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>selector</td>
+      <td>string | false</td>
+      <td>false</td>
+      <td>If a selector is provided, popover objects will be delegated to the specified targets. In practice, this is used to enable dynamic HTML content to have popovers added. See <a href="https://github.com/twbs/bootstrap/issues/4215">this</a> and <a href="https://jsbin.com/zopod/1/edit">an informative example</a>.</td>
+    </tr>
+    <tr>
+      <td>template</td>
+      <td>string</td>
+      <td><code>'&lt;div class="popover" role="tooltip"&gt;&lt;div class="arrow"&gt;&lt;/div&gt;&lt;h3 class="popover-header"&gt;&lt;/h3&gt;&lt;div class="popover-body"&gt;&lt;/div&gt;&lt;/div&gt;'</code></td>
+      <td>
+        <p>Base HTML to use when creating the popover.</p>
+        <p>The popover's <code>title</code> will be injected into the <code>.popover-header</code>.</p>
+        <p>The popover's <code>content</code> will be injected into the <code>.popover-body</code>.</p>
+        <p><code>.arrow</code> will become the popover's arrow.</p>
+        <p>The outermost wrapper element should have the <code>.popover</code> class.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>title</td>
+      <td>string | element | function</td>
+      <td>''</td>
+      <td>
+        <p>Default title value if <code>title</code> attribute isn't present.</p>
+        <p>If a function is given, it will be called with its <code>this</code> reference set to the element that the popover is attached to.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>trigger</td>
+      <td>string</td>
+      <td>'click'</td>
+      <td>How popover is triggered - click | hover | focus | manual. You may pass multiple triggers; separate them with a space. <code>manual</code> cannot be combined with any other trigger.</td>
+    </tr>
+    <tr>
+      <td>offset</td>
+      <td>number | string</td>
+      <td>0</td>
+      <td>Offset of the popover relative to its target. For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..offset.offset">offset docs</a>.</td>
+    </tr>
+    <tr>
+      <td>fallbackPlacement</td>
+      <td>string | array</td>
+      <td>'flip'</td>
+      <td>Allow to specify which position Popper will use on fallback. For more information refer to
+      Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..flip.behavior">behavior docs</a></td>
+    </tr>
+    <tr>
+      <td>boundary</td>
+      <td>string | element</td>
+      <td>'scrollParent'</td>
+      <td>Overflow constraint boundary of the popover. Accepts the values of <code>'viewport'</code>, <code>'window'</code>, <code>'scrollParent'</code>, or an HTMLElement reference (JavaScript only). For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..preventOverflow.boundariesElement">preventOverflow docs</a>.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% capture callout %}
+#### Data attributes for individual popovers
+
+Options for individual popovers can alternatively be specified through the use of data attributes, as explained above.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+### Methods
+
+{% include callout-danger-async-methods.md %}
+
+#### `$().popover(options)`
+
+Initializes popovers for an element collection.
+
+#### `.popover('show')`
+
+Reveals an element's popover. **Returns to the caller before the popover has actually been shown** (i.e. before the `shown.bs.popover` event occurs). This is considered a "manual" triggering of the popover. Popovers whose both title and content are zero-length are never displayed.
+
+{% highlight js %}$('#element').popover('show'){% endhighlight %}
+
+#### `.popover('hide')`
+
+Hides an element's popover. **Returns to the caller before the popover has actually been hidden** (i.e. before the `hidden.bs.popover` event occurs). This is considered a "manual" triggering of the popover.
+
+{% highlight js %}$('#element').popover('hide'){% endhighlight %}
+
+#### `.popover('toggle')`
+
+Toggles an element's popover. **Returns to the caller before the popover has actually been shown or hidden** (i.e. before the `shown.bs.popover` or `hidden.bs.popover` event occurs). This is considered a "manual" triggering of the popover.
+
+{% highlight js %}$('#element').popover('toggle'){% endhighlight %}
+
+#### `.popover('dispose')`
+
+Hides and destroys an element's popover. Popovers that use delegation (which are created using [the `selector` option](#options)) cannot be individually destroyed on descendant trigger elements.
+
+{% highlight js %}$('#element').popover('dispose'){% endhighlight %}
+
+#### `.popover('enable')`
+
+Gives an element's popover the ability to be shown. **Popovers are enabled by default.**
+
+{% highlight js %}$('#element').popover('enable'){% endhighlight %}
+
+#### `.popover('disable')`
+
+Removes the ability for an element's popover to be shown. The popover will only be able to be shown if it is re-enabled.
+
+{% highlight js %}$('#element').popover('disable'){% endhighlight %}
+
+#### `.popover('toggleEnabled')`
+
+Toggles the ability for an element's popover to be shown or hidden.
+
+{% highlight js %}$('#element').popover('toggleEnabled'){% endhighlight %}
+
+#### `.popover('update')`
+
+Updates the position of an element's popover.
+
+{% highlight js %}$('#element').popover('update'){% endhighlight %}
+
+### Events
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>show.bs.popover</td>
+      <td>This event fires immediately when the <code>show</code> instance method is called.</td>
+    </tr>
+    <tr>
+      <td>shown.bs.popover</td>
+      <td>This event is fired when the popover has been made visible to the user (will wait for CSS transitions to complete).</td>
+    </tr>
+    <tr>
+      <td>hide.bs.popover</td>
+      <td>This event is fired immediately when the <code>hide</code> instance method has been called.</td>
+    </tr>
+    <tr>
+      <td>hidden.bs.popover</td>
+      <td>This event is fired when the popover has finished being hidden from the user (will wait for CSS transitions to complete).</td>
+    </tr>
+    <tr>
+      <td>inserted.bs.popover</td>
+      <td>This event is fired after the <code>show.bs.popover</code> event when the popover template has been added to the DOM.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('#myPopover').on('hidden.bs.popover', function () {
+  // do something…
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/progress.md b/vendor/twbs/bootstrap/site/docs/4.1/components/progress.md
new file mode 100644
index 000000000..e342b06d9
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/progress.md
@@ -0,0 +1,146 @@
+---
+layout: docs
+title: Progress
+description: Documentation and examples for using Bootstrap custom progress bars featuring support for stacked bars, animated backgrounds, and text labels.
+group: components
+toc: true
+---
+
+## How it works
+
+Progress components are built with two HTML elements, some CSS to set the width, and a few attributes. We don't use [the HTML5 `<progress>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/progress), ensuring you can stack progress bars, animate them, and place text labels over them.
+
+- We use the `.progress` as a wrapper to indicate the max value of the progress bar.
+- We use the inner `.progress-bar` to indicate the progress so far.
+- The `.progress-bar` requires an inline style, utility class, or custom CSS to set their width.
+- The `.progress-bar` also requires some `role` and `aria` attributes to make it accessible.
+
+Put that all together, and you have the following examples.
+
+{% capture example %}
+<div class="progress">
+  <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar" role="progressbar" style="width: 25%" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar" role="progressbar" style="width: 50%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar" role="progressbar" style="width: 75%" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar" role="progressbar" style="width: 100%" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Bootstrap provides a handful of [utilities for setting width]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/sizing/). Depending on your needs, these may help with quickly configuring progress.
+
+{% capture example %}
+<div class="progress">
+  <div class="progress-bar w-75" role="progressbar" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Labels
+
+Add labels to your progress bars by placing text within the `.progress-bar`.
+
+{% capture example %}
+<div class="progress">
+  <div class="progress-bar" role="progressbar" style="width: 25%;" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100">25%</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Height
+
+We only set a `height` value on the `.progress`, so if you change that value the inner `.progress-bar` will automatically resize accordingly.
+
+{% capture example %}
+<div class="progress" style="height: 1px;">
+  <div class="progress-bar" role="progressbar" style="width: 25%;" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress" style="height: 20px;">
+  <div class="progress-bar" role="progressbar" style="width: 25%;" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Backgrounds
+
+Use background utility classes to change the appearance of individual progress bars.
+
+{% capture example %}
+<div class="progress">
+  <div class="progress-bar bg-success" role="progressbar" style="width: 25%" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar bg-info" role="progressbar" style="width: 50%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar bg-warning" role="progressbar" style="width: 75%" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar bg-danger" role="progressbar" style="width: 100%" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Multiple bars
+
+Include multiple progress bars in a progress component if you need.
+
+{% capture example %}
+<div class="progress">
+  <div class="progress-bar" role="progressbar" style="width: 15%" aria-valuenow="15" aria-valuemin="0" aria-valuemax="100"></div>
+  <div class="progress-bar bg-success" role="progressbar" style="width: 30%" aria-valuenow="30" aria-valuemin="0" aria-valuemax="100"></div>
+  <div class="progress-bar bg-info" role="progressbar" style="width: 20%" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Striped
+
+Add `.progress-bar-striped` to any `.progress-bar` to apply a stripe via CSS gradient over the progress bar's background color.
+
+{% capture example %}
+<div class="progress">
+  <div class="progress-bar progress-bar-striped" role="progressbar" style="width: 10%" aria-valuenow="10" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar progress-bar-striped bg-success" role="progressbar" style="width: 25%" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar progress-bar-striped bg-info" role="progressbar" style="width: 50%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar progress-bar-striped bg-warning" role="progressbar" style="width: 75%" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+<div class="progress">
+  <div class="progress-bar progress-bar-striped bg-danger" role="progressbar" style="width: 100%" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Animated stripes
+
+The striped gradient can also be animated. Add `.progress-bar-animated` to `.progress-bar` to animate the stripes right to left via CSS3 animations.
+
+<div class="bd-example">
+  <div class="progress">
+    <div class="progress-bar progress-bar-striped" role="progressbar" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100" style="width: 75%"></div>
+  </div>
+  <button type="button" class="btn btn-secondary bd-toggle-animated-progress" data-toggle="button" aria-pressed="false" autocomplete="off">
+    Toggle animation
+  </button>
+</div>
+
+{% highlight html %}
+<div class="progress">
+  <div class="progress-bar progress-bar-striped progress-bar-animated" role="progressbar" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100" style="width: 75%"></div>
+</div>
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/scrollspy.md b/vendor/twbs/bootstrap/site/docs/4.1/components/scrollspy.md
new file mode 100644
index 000000000..6d8799d8a
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/scrollspy.md
@@ -0,0 +1,333 @@
+---
+layout: docs
+title: Scrollspy
+description: Automatically update Bootstrap navigation or list group components based on scroll position to indicate which link is currently active in the viewport.
+group: components
+toc: true
+---
+
+## How it works
+
+Scrollspy has a few requirements to function properly:
+
+- If you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util).
+- It must be used on a Bootstrap [nav component]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/navs/) or [list group]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/list-group/).
+- Scrollspy requires `position: relative;` on the element you're spying on, usually the `<body>`.
+- When spying on elements other than the `<body>`, be sure to have a `height` set and `overflow-y: scroll;` applied.
+- Anchors (`<a>`) are required and must point to an element with that `id`.
+
+When successfully implemented, your nav or list group will update accordingly, moving the `.active` class from one item to the next based on their associated targets.
+
+## Example in navbar
+
+Scroll the area below the navbar and watch the active class change. The dropdown items will be highlighted as well.
+
+<div class="bd-example">
+  <nav id="navbar-example2" class="navbar navbar-light bg-light">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <ul class="nav nav-pills">
+      <li class="nav-item">
+        <a class="nav-link" href="#fat">@fat</a>
+      </li>
+      <li class="nav-item">
+        <a class="nav-link" href="#mdo">@mdo</a>
+      </li>
+      <li class="nav-item dropdown">
+        <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <div class="dropdown-menu">
+          <a class="dropdown-item" href="#one">one</a>
+          <a class="dropdown-item" href="#two">two</a>
+          <div role="separator" class="dropdown-divider"></div>
+          <a class="dropdown-item" href="#three">three</a>
+        </div>
+      </li>
+    </ul>
+  </nav>
+  <div data-spy="scroll" data-target="#navbar-example2" data-offset="0" class="scrollspy-example">
+    <h4 id="fat">@fat</h4>
+    <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+    <h4 id="mdo">@mdo</h4>
+    <p>Veniam marfa mustache skateboard, adipisicing fugiat velit pitchfork beard. Freegan beard aliqua cupidatat mcsweeney's vero. Cupidatat four loko nisi, ea helvetica nulla carles. Tattooed cosby sweater food truck, mcsweeney's quis non freegan vinyl. Lo-fi wes anderson +1 sartorial. Carles non aesthetic exercitation quis gentrify. Brooklyn adipisicing craft beer vice keytar deserunt.</p>
+    <h4 id="one">one</h4>
+    <p>Occaecat commodo aliqua delectus. Fap craft beer deserunt skateboard ea. Lomo bicycle rights adipisicing banh mi, velit ea sunt next level locavore single-origin coffee in magna veniam. High life id vinyl, echo park consequat quis aliquip banh mi pitchfork. Vero VHS est adipisicing. Consectetur nisi DIY minim messenger bag. Cred ex in, sustainable delectus consectetur fanny pack iphone.</p>
+    <h4 id="two">two</h4>
+    <p>In incididunt echo park, officia deserunt mcsweeney's proident master cleanse thundercats sapiente veniam. Excepteur VHS elit, proident shoreditch +1 biodiesel laborum craft beer. Single-origin coffee wayfarers irure four loko, cupidatat terry richardson master cleanse. Assumenda you probably haven't heard of them art party fanny pack, tattooed nulla cardigan tempor ad. Proident wolf nesciunt sartorial keffiyeh eu banh mi sustainable. Elit wolf voluptate, lo-fi ea portland before they sold out four loko. Locavore enim nostrud mlkshk brooklyn nesciunt.</p>
+    <h4 id="three">three</h4>
+    <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+    <p>Keytar twee blog, culpa messenger bag marfa whatever delectus food truck. Sapiente synth id assumenda. Locavore sed helvetica cliche irony, thundercats you probably haven't heard of them consequat hoodie gluten-free lo-fi fap aliquip. Labore elit placeat before they sold out, terry richardson proident brunch nesciunt quis cosby sweater pariatur keffiyeh ut helvetica artisan. Cardigan craft beer seitan readymade velit. VHS chambray laboris tempor veniam. Anim mollit minim commodo ullamco thundercats.
+    </p>
+  </div>
+</div>
+
+{% highlight html %}
+<nav id="navbar-example2" class="navbar navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+  <ul class="nav nav-pills">
+    <li class="nav-item">
+      <a class="nav-link" href="#fat">@fat</a>
+    </li>
+    <li class="nav-item">
+      <a class="nav-link" href="#mdo">@mdo</a>
+    </li>
+    <li class="nav-item dropdown">
+      <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+      <div class="dropdown-menu">
+        <a class="dropdown-item" href="#one">one</a>
+        <a class="dropdown-item" href="#two">two</a>
+        <div role="separator" class="dropdown-divider"></div>
+        <a class="dropdown-item" href="#three">three</a>
+      </div>
+    </li>
+  </ul>
+</nav>
+<div data-spy="scroll" data-target="#navbar-example2" data-offset="0">
+  <h4 id="fat">@fat</h4>
+  <p>...</p>
+  <h4 id="mdo">@mdo</h4>
+  <p>...</p>
+  <h4 id="one">one</h4>
+  <p>...</p>
+  <h4 id="two">two</h4>
+  <p>...</p>
+  <h4 id="three">three</h4>
+  <p>...</p>
+</div>
+{% endhighlight %}
+
+## Example with nested nav
+
+Scrollspy also works with nested `.nav`s. If a nested `.nav` is `.active`, its parents will also be `.active`. Scroll the area next to the navbar and watch the active class change.
+
+<div class="bd-example">
+  <div class="row">
+    <div class="col-4">
+      <nav id="navbar-example3" class="navbar navbar-light bg-light flex-column">
+        <a class="navbar-brand" href="#">Navbar</a>
+        <nav class="nav nav-pills flex-column">
+          <a class="nav-link" href="#item-1">Item 1</a>
+          <nav class="nav nav-pills flex-column">
+            <a class="nav-link ml-3 my-1" href="#item-1-1">Item 1-1</a>
+            <a class="nav-link ml-3 my-1" href="#item-1-2">Item 1-2</a>
+          </nav>
+          <a class="nav-link" href="#item-2">Item 2</a>
+          <a class="nav-link" href="#item-3">Item 3</a>
+          <nav class="nav nav-pills flex-column">
+            <a class="nav-link ml-3 my-1" href="#item-3-1">Item 3-1</a>
+            <a class="nav-link ml-3 my-1" href="#item-3-2">Item 3-2</a>
+          </nav>
+        </nav>
+      </nav>
+    </div>
+    <div class="col-8">
+      <div data-spy="scroll" data-target="#navbar-example3" data-offset="0" class="scrollspy-example-2">
+        <h4 id="item-1">Item 1</h4>
+        <p>Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Do aute ipsum ipsum ullamco cillum consectetur ut et aute consectetur labore. Fugiat laborum incididunt tempor eu consequat enim dolore proident. Qui laborum do non excepteur nulla magna eiusmod consectetur in. Aliqua et aliqua officia quis et incididunt voluptate non anim reprehenderit adipisicing dolore ut consequat deserunt mollit dolore. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.</p>
+        <h5 id="item-1-1">Item 1-1</h5>
+        <p>Amet tempor mollit aliquip pariatur excepteur commodo do ea cillum commodo Lorem et occaecat elit qui et. Aliquip labore ex ex esse voluptate occaecat Lorem ullamco deserunt. Aliqua cillum excepteur irure consequat id quis ea. Sit proident ullamco aute magna pariatur nostrud labore. Reprehenderit aliqua commodo eiusmod aliquip est do duis amet proident magna consectetur consequat eu commodo fugiat non quis. Enim aliquip exercitation ullamco adipisicing voluptate excepteur minim exercitation minim minim commodo adipisicing exercitation officia nisi adipisicing. Anim id duis qui consequat labore adipisicing sint dolor elit cillum anim et fugiat.</p>
+        <h5 id="item-1-2">Item 2-2</h5>
+        <p>Cillum nisi deserunt magna eiusmod qui eiusmod velit voluptate pariatur laborum sunt enim. Irure laboris mollit consequat incididunt sint et culpa culpa incididunt adipisicing magna magna occaecat. Nulla ipsum cillum eiusmod sint elit excepteur ea labore enim consectetur in labore anim. Proident ullamco ipsum esse elit ut Lorem eiusmod dolor et eiusmod. Anim occaecat nulla in non consequat eiusmod velit incididunt.</p>
+        <h4 id="item-2">Item 2</h4>
+        <p>Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Laborum consequat non elit enim exercitation cillum aliqua consequat id aliqua. Esse ex consectetur mollit voluptate est in duis laboris ad sit ipsum anim Lorem. Incididunt veniam velit elit elit veniam Lorem aliqua quis ullamco deserunt sit enim elit aliqua esse irure. Laborum nisi sit est tempor laborum mollit labore officia laborum excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.</p>
+        <h4 id="item-3">Item 3</h4>
+        <p>Quis anim sit do amet fugiat dolor velit sit ea ea do reprehenderit culpa duis. Nostrud aliqua ipsum fugiat minim proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.</p>
+        <h5 id="item-3-1">Item 3-1</h5>
+        <p>Deserunt quis elit Lorem eiusmod amet enim enim amet minim Lorem proident nostrud. Ea id dolore anim exercitation aute fugiat labore voluptate cillum do laboris labore. Ex velit exercitation nisi enim labore reprehenderit labore nostrud ut ut. Esse officia sunt duis aliquip ullamco tempor eiusmod deserunt irure nostrud irure. Ullamco proident veniam laboris ea consectetur magna sunt ex exercitation aliquip minim enim culpa occaecat exercitation. Est tempor excepteur aliquip laborum consequat do deserunt laborum esse eiusmod irure proident ipsum esse qui.</p>
+        <h5 id="item-3-2">Item 3-2</h5>
+        <p>Labore sit culpa commodo elit adipisicing sit aliquip elit proident voluptate minim mollit nostrud aute reprehenderit do. Mollit excepteur eu Lorem ipsum anim commodo sint labore Lorem in exercitation velit incididunt. Occaecat consectetur nisi in occaecat proident minim enim sunt reprehenderit exercitation cupidatat et do officia. Aliquip consequat ad labore labore mollit ut amet. Sit pariatur tempor proident in veniam culpa aliqua excepteur elit magna fugiat eiusmod amet officia.</p>
+      </div>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<nav id="navbar-example3" class="navbar navbar-light bg-light">
+  <a class="navbar-brand" href="#">Navbar</a>
+  <nav class="nav nav-pills flex-column">
+    <a class="nav-link" href="#item-1">Item 1</a>
+    <nav class="nav nav-pills flex-column">
+      <a class="nav-link ml-3 my-1" href="#item-1-1">Item 1-1</a>
+      <a class="nav-link ml-3 my-1" href="#item-1-2">Item 1-2</a>
+    </nav>
+    <a class="nav-link" href="#item-2">Item 2</a>
+    <a class="nav-link" href="#item-3">Item 3</a>
+    <nav class="nav nav-pills flex-column">
+      <a class="nav-link ml-3 my-1" href="#item-3-1">Item 3-1</a>
+      <a class="nav-link ml-3 my-1" href="#item-3-2">Item 3-2</a>
+    </nav>
+  </nav>
+</nav>
+
+<div data-spy="scroll" data-target="#navbar-example3" data-offset="0">
+  <h4 id="item-1">Item 1</h4>
+  <p>...</p>
+  <h5 id="item-1-1">Item 1-1</h5>
+  <p>...</p>
+  <h5 id="item-1-2">Item 2-2</h5>
+  <p>...</p>
+  <h4 id="item-2">Item 2</h4>
+  <p>...</p>
+  <h4 id="item-3">Item 3</h4>
+  <p>...</p>
+  <h5 id="item-3-1">Item 3-1</h5>
+  <p>...</p>
+  <h5 id="item-3-2">Item 3-2</h5>
+  <p>...</p>
+</div>
+{% endhighlight %}
+
+## Example with list-group
+
+Scrollspy also works with `.list-group`s. Scroll the area next to the list group and watch the active class change.
+
+<div class="bd-example">
+  <div class="row">
+    <div class="col-4">
+      <div id="list-example" class="list-group">
+        <a class="list-group-item list-group-item-action" href="#list-item-1">Item 1</a>
+        <a class="list-group-item list-group-item-action" href="#list-item-2">Item 2</a>
+        <a class="list-group-item list-group-item-action" href="#list-item-3">Item 3</a>
+        <a class="list-group-item list-group-item-action" href="#list-item-4">Item 4</a>
+      </div>
+    </div>
+    <div class="col-8">
+      <div data-spy="scroll" data-target="#list-example" data-offset="0" class="scrollspy-example">
+        <h4 id="list-item-1">Item 1</h4>
+        <p>Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Do aute ipsum ipsum ullamco cillum consectetur ut et aute consectetur labore. Fugiat laborum incididunt tempor eu consequat enim dolore proident. Qui laborum do non excepteur nulla magna eiusmod consectetur in. Aliqua et aliqua officia quis et incididunt voluptate non anim reprehenderit adipisicing dolore ut consequat deserunt mollit dolore. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.</p>
+        <h4 id="list-item-2">Item 2</h4>
+        <p>Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Laborum consequat non elit enim exercitation cillum aliqua consequat id aliqua. Esse ex consectetur mollit voluptate est in duis laboris ad sit ipsum anim Lorem. Incididunt veniam velit elit elit veniam Lorem aliqua quis ullamco deserunt sit enim elit aliqua esse irure. Laborum nisi sit est tempor laborum mollit labore officia laborum excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.</p>
+        <h4 id="list-item-3">Item 3</h4>
+        <p>Quis anim sit do amet fugiat dolor velit sit ea ea do reprehenderit culpa duis. Nostrud aliqua ipsum fugiat minim proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.</p>
+        <h4 id="list-item-4">Item 4</h4>
+        <p>Quis anim sit do amet fugiat dolor velit sit ea ea do reprehenderit culpa duis. Nostrud aliqua ipsum fugiat minim proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.</p>
+      </div>
+    </div>
+  </div>
+</div>
+
+{% highlight html %}
+<div id="list-example" class="list-group">
+  <a class="list-group-item list-group-item-action" href="#list-item-1">Item 1</a>
+  <a class="list-group-item list-group-item-action" href="#list-item-2">Item 2</a>
+  <a class="list-group-item list-group-item-action" href="#list-item-3">Item 3</a>
+  <a class="list-group-item list-group-item-action" href="#list-item-4">Item 4</a>
+</div>
+<div data-spy="scroll" data-target="#list-example" data-offset="0" class="scrollspy-example">
+  <h4 id="list-item-1">Item 1</h4>
+  <p>...</p>
+  <h4 id="list-item-2">Item 2</h4>
+  <p>...</p>
+  <h4 id="list-item-3">Item 3</h4>
+  <p>...</p>
+  <h4 id="list-item-4">Item 4</h4>
+  <p>...</p>
+</div>
+{% endhighlight %}
+
+
+## Usage
+
+### Via data attributes
+
+To easily add scrollspy behavior to your topbar navigation, add `data-spy="scroll"` to the element you want to spy on (most typically this would be the `<body>`). Then add the `data-target` attribute with the ID or class of the parent element of any Bootstrap `.nav` component.
+
+{% highlight css %}
+body {
+  position: relative;
+}
+{% endhighlight %}
+
+{% highlight html %}
+<body data-spy="scroll" data-target="#navbar-example">
+  ...
+  <div id="navbar-example">
+    <ul class="nav nav-tabs" role="tablist">
+      ...
+    </ul>
+  </div>
+  ...
+</body>
+{% endhighlight %}
+
+### Via JavaScript
+
+After adding `position: relative;` in your CSS, call the scrollspy via JavaScript:
+
+{% highlight js %}
+$('body').scrollspy({ target: '#navbar-example' })
+{% endhighlight %}
+
+{% capture callout %}
+#### Resolvable ID targets required
+
+Navbar links must have resolvable id targets. For example, a `<a href="#home">home</a>` must correspond to something in the DOM like `<div id="home"></div>`.
+{% endcapture %}
+{% include callout.html content=callout type="danger" %}
+
+{% capture callout %}
+#### Non-`:visible` target elements ignored
+
+Target elements that are not [`:visible` according to jQuery](https://api.jquery.com/visible-selector/) will be ignored and their corresponding nav items will never be highlighted.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+### Methods
+
+#### `.scrollspy('refresh')`
+
+When using scrollspy in conjunction with adding or removing of elements from the DOM, you'll need to call the refresh method like so:
+
+{% highlight js %}
+$('[data-spy="scroll"]').each(function () {
+  var $spy = $(this).scrollspy('refresh')
+})
+{% endhighlight %}
+
+#### `.scrollspy('dispose')`
+
+Destroys an element's scrollspy.
+
+### Options
+
+Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-offset=""`.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 100px;">Name</th>
+      <th style="width: 100px;">Type</th>
+      <th style="width: 50px;">Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>offset</td>
+      <td>number</td>
+      <td>10</td>
+      <td>Pixels to offset from top when calculating position of scroll.</td>
+    </tr>
+  </tbody>
+</table>
+
+### Events
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>activate.bs.scrollspy</td>
+      <td>This event fires on the scroll element whenever a new item becomes activated by the scrollspy.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('[data-spy="scroll"]').on('activate.bs.scrollspy', function () {
+  // do something…
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/components/tooltips.md b/vendor/twbs/bootstrap/site/docs/4.1/components/tooltips.md
new file mode 100644
index 000000000..05e63f3cf
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/components/tooltips.md
@@ -0,0 +1,354 @@
+---
+layout: docs
+title: Tooltips
+description: Documentation and examples for adding custom Bootstrap tooltips with CSS and JavaScript using CSS3 for animations and data-attributes for local title storage.
+group: components
+toc: true
+---
+
+## Overview
+
+Things to know when using the tooltip plugin:
+
+- Tooltips rely on the 3rd party library [Popper.js](https://popper.js.org/) for positioning. You must include [popper.min.js]({{ site.cdn.popper }}) before bootstrap.js or use `bootstrap.bundle.min.js` / `bootstrap.bundle.js` which contains Popper.js in order for tooltips to work!
+- If you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util).
+- Tooltips are opt-in for performance reasons, so **you must initialize them yourself**.
+- Tooltips with zero-length titles are never displayed.
+- Specify `container: 'body'` to avoid rendering problems in more complex components (like our input groups, button groups, etc).
+- Triggering tooltips on hidden elements will not work.
+- Tooltips for `.disabled` or `disabled` elements must be triggered on a wrapper element.
+- When triggered from hyperlinks that span multiple lines, tooltips will be centered. Use `white-space: nowrap;` on your `<a>`s to avoid this behavior.
+- Tooltips must be hidden before their corresponding elements have been removed from the DOM.
+
+Got all that? Great, let's see how they work with some examples.
+
+## Example: Enable tooltips everywhere
+
+One way to initialize all tooltips on a page would be to select them by their `data-toggle` attribute:
+
+{% highlight js %}
+$(function () {
+  $('[data-toggle="tooltip"]').tooltip()
+})
+{% endhighlight %}
+
+## Examples
+
+Hover over the links below to see tooltips:
+
+<div class="bd-example tooltip-demo">
+  <p class="muted">Tight pants next level keffiyeh <a href="#" data-toggle="tooltip" title="Default tooltip">you probably</a> haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel <a href="#" data-toggle="tooltip" title="Another tooltip">have a</a> terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan <a href="#" data-toggle="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" data-toggle="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.
+  </p>
+</div>
+
+Hover over the buttons below to see the four tooltips directions: top, right, bottom, and left.
+
+<div class="bd-example tooltip-demo">
+  <div class="bd-example-tooltips">
+    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top">Tooltip on top</button>
+    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="right" title="Tooltip on right">Tooltip on right</button>
+    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">Tooltip on bottom</button>
+    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip on left">Tooltip on left</button>
+    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-html="true" title="<em>Tooltip</em> <u>with</u> <b>HTML</b>">Tooltip with HTML</button>
+  </div>
+</div>
+
+{% highlight html %}
+<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top">
+  Tooltip on top
+</button>
+<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="right" title="Tooltip on right">
+  Tooltip on right
+</button>
+<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">
+  Tooltip on bottom
+</button>
+<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip on left">
+  Tooltip on left
+</button>
+{% endhighlight %}
+
+And with custom HTML added:
+
+{% highlight html %}
+<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-html="true" title="<em>Tooltip</em> <u>with</u> <b>HTML</b>">
+  Tooltip with HTML
+</button>
+{% endhighlight %}
+
+## Usage
+
+The tooltip plugin generates content and markup on demand, and by default places tooltips after their trigger element.
+
+Trigger the tooltip via JavaScript:
+
+{% highlight js %}
+$('#example').tooltip(options)
+{% endhighlight %}
+
+{% capture callout %}
+##### Overflow `auto` and `scroll`
+
+Tooltip position attempts to automatically change when a parent container has `overflow: auto` or `overflow: scroll` like our `.table-responsive`, but still keeps the original placement's positioning. To resolve, set the `boundary` option to anything other than default value, `'scrollParent'`, such as `'window'`:
+
+{% highlight js %}
+$('#example').tooltip({ boundary: 'window' })
+{% endhighlight %}
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+### Markup
+
+The required markup for a tooltip is only a `data` attribute and `title` on the HTML element you wish to have a tooltip. The generated markup of a tooltip is rather simple, though it does require a position (by default, set to `top` by the plugin).
+
+{% capture callout %}
+##### Making tooltips work for keyboard and assistive technology users
+
+You should only add tooltips to HTML elements that are traditionally keyboard-focusable and interactive (such as links or form controls). Although arbitrary HTML elements (such as `<span>`s) can be made focusable by adding the `tabindex="0"` attribute, this will add potentially annoying and confusing tab stops on non-interactive elements for keyboard users. In addition, most assistive technologies currently do not announce the tooltip in this situation.
+
+Additionally, do not rely solely on `hover` as the trigger for your tooltip, as this will make your tooltips impossible to trigger for keyboard users.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+{% highlight html %}
+<!-- HTML to write -->
+<a href="#" data-toggle="tooltip" title="Some tooltip text!">Hover over me</a>
+
+<!-- Generated markup by the plugin -->
+<div class="tooltip bs-tooltip-top" role="tooltip">
+  <div class="arrow"></div>
+  <div class="tooltip-inner">
+    Some tooltip text!
+  </div>
+</div>
+{% endhighlight %}
+
+### Disabled elements
+
+Elements with the `disabled` attribute aren't interactive, meaning users cannot focus, hover, or click them to trigger a tooltip (or popover). As a workaround, you'll want to trigger the tooltip from a wrapper `<div>` or `<span>`, ideally made keyboard-focusable using `tabindex="0"`, and override the `pointer-events` on the disabled element.
+
+<div class="tooltip-demo">
+{% capture example %}
+<span class="d-inline-block" tabindex="0" data-toggle="tooltip" title="Disabled tooltip">
+  <button class="btn btn-primary" style="pointer-events: none;" type="button" disabled>Disabled button</button>
+</span>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Options
+
+Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-animation=""`.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 100px;">Name</th>
+      <th style="width: 100px;">Type</th>
+      <th style="width: 50px;">Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>animation</td>
+      <td>boolean</td>
+      <td>true</td>
+      <td>Apply a CSS fade transition to the tooltip</td>
+    </tr>
+    <tr>
+      <td>container</td>
+      <td>string | element | false</td>
+      <td>false</td>
+      <td>
+        <p>Appends the tooltip to a specific element. Example: <code>container: 'body'</code>. This option is particularly useful in that it allows you to position the tooltip in the flow of the document near the triggering element - which will prevent the tooltip from floating away from the triggering element during a window resize.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>delay</td>
+      <td>number | object</td>
+      <td>0</td>
+      <td>
+        <p>Delay showing and hiding the tooltip (ms) - does not apply to manual trigger type</p>
+        <p>If a number is supplied, delay is applied to both hide/show</p>
+        <p>Object structure is: <code>delay: { "show": 500, "hide": 100 }</code></p>
+      </td>
+    </tr>
+    <tr>
+      <td>html</td>
+      <td>boolean</td>
+      <td>false</td>
+      <td>
+        <p>Allow HTML in the tooltip.</p>
+        <p>If true, HTML tags in the tooltip's <code>title</code> will be rendered in the tooltip. If false, jQuery's <code>text</code> method will be used to insert content into the DOM.</p>
+        <p>Use text if you're worried about XSS attacks.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>placement</td>
+      <td>string | function</td>
+      <td>'top'</td>
+      <td>
+        <p>How to position the tooltip - auto | top | bottom | left | right.<br>When <code>auto</code> is specified, it will dynamically reorient the tooltip.</p>
+        <p>When a function is used to determine the placement, it is called with the tooltip DOM node as its first argument and the triggering element DOM node as its second. The <code>this</code> context is set to the tooltip instance.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>selector</td>
+      <td>string | false</td>
+      <td>false</td>
+      <td>If a selector is provided, tooltip objects will be delegated to the specified targets. In practice, this is used to enable dynamic HTML content to have popovers added. See <a href="https://github.com/twbs/bootstrap/issues/4215">this</a> and <a href="https://jsbin.com/zopod/1/edit">an informative example</a>.</td>
+    </tr>
+    <tr>
+      <td>template</td>
+      <td>string</td>
+      <td><code>'&lt;div class="tooltip" role="tooltip"&gt;&lt;div class="arrow"&gt;&lt;/div&gt;&lt;div class="tooltip-inner"&gt;&lt;/div&gt;&lt;/div&gt;'</code></td>
+      <td>
+        <p>Base HTML to use when creating the tooltip.</p>
+        <p>The tooltip's <code>title</code> will be injected into the <code>.tooltip-inner</code>.</p>
+        <p><code>.arrow</code> will become the tooltip's arrow.</p>
+        <p>The outermost wrapper element should have the <code>.tooltip</code> class and <code>role="tooltip"</code>.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>title</td>
+      <td>string | element | function</td>
+      <td>''</td>
+      <td>
+        <p>Default title value if <code>title</code> attribute isn't present.</p>
+        <p>If a function is given, it will be called with its <code>this</code> reference set to the element that the tooltip is attached to.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>trigger</td>
+      <td>string</td>
+      <td>'hover focus'</td>
+      <td>
+        <p>How tooltip is triggered - click | hover | focus | manual. You may pass multiple triggers; separate them with a space.</p>
+        <p><code>'manual'</code> indicates that the tooltip will be triggered programmatically via the <code>.tooltip('show')</code>, <code>.tooltip('hide')</code> and <code>.tooltip('toggle')</code> methods; this value cannot be combined with any other trigger.</p>
+        <p><code>'hover'</code> on its own will result in tooltips that cannot be triggered via the keyboard, and should only be used if alternative methods for conveying the same information for keyboard users is present.</p>
+      </td>
+    </tr>
+    <tr>
+      <td>offset</td>
+      <td>number | string</td>
+      <td>0</td>
+      <td>Offset of the tooltip relative to its target. For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..offset.offset">offset docs</a>.</td>
+    </tr>
+    <tr>
+      <td>fallbackPlacement</td>
+      <td>string | array</td>
+      <td>'flip'</td>
+      <td>Allow to specify which position Popper will use on fallback. For more information refer to
+      Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..flip.behavior">behavior docs</a></td>
+    </tr>
+    <tr>
+      <td>boundary</td>
+      <td>string | element</td>
+      <td>'scrollParent'</td>
+      <td>Overflow constraint boundary of the tooltip. Accepts the values of <code>'viewport'</code>, <code>'window'</code>, <code>'scrollParent'</code>, or an HTMLElement reference (JavaScript only). For more information refer to Popper.js's <a href="https://popper.js.org/popper-documentation.html#modifiers..preventOverflow.boundariesElement">preventOverflow docs</a>.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% capture callout %}
+#### Data attributes for individual tooltips
+
+Options for individual tooltips can alternatively be specified through the use of data attributes, as explained above.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+### Methods
+
+{% include callout-danger-async-methods.md %}
+
+#### `$().tooltip(options)`
+
+Attaches a tooltip handler to an element collection.
+
+#### `.tooltip('show')`
+
+Reveals an element's tooltip. **Returns to the caller before the tooltip has actually been shown** (i.e. before the `shown.bs.tooltip` event occurs). This is considered a "manual" triggering of the tooltip. Tooltips with zero-length titles are never displayed.
+
+{% highlight js %}$('#element').tooltip('show'){% endhighlight %}
+
+#### `.tooltip('hide')`
+
+Hides an element's tooltip. **Returns to the caller before the tooltip has actually been hidden** (i.e. before the `hidden.bs.tooltip` event occurs). This is considered a "manual" triggering of the tooltip.
+
+{% highlight js %}$('#element').tooltip('hide'){% endhighlight %}
+
+#### `.tooltip('toggle')`
+
+Toggles an element's tooltip. **Returns to the caller before the tooltip has actually been shown or hidden** (i.e. before the `shown.bs.tooltip` or `hidden.bs.tooltip` event occurs). This is considered a "manual" triggering of the tooltip.
+
+{% highlight js %}$('#element').tooltip('toggle'){% endhighlight %}
+
+#### `.tooltip('dispose')`
+
+Hides and destroys an element's tooltip. Tooltips that use delegation (which are created using [the `selector` option](#options)) cannot be individually destroyed on descendant trigger elements.
+
+{% highlight js %}$('#element').tooltip('dispose'){% endhighlight %}
+
+#### `.tooltip('enable')`
+
+Gives an element's tooltip the ability to be shown. **Tooltips are enabled by default.**
+
+{% highlight js %}$('#element').tooltip('enable'){% endhighlight %}
+
+#### `.tooltip('disable')`
+
+Removes the ability for an element's tooltip to be shown. The tooltip will only be able to be shown if it is re-enabled.
+
+{% highlight js %}$('#element').tooltip('disable'){% endhighlight %}
+
+#### `.tooltip('toggleEnabled')`
+
+Toggles the ability for an element's tooltip to be shown or hidden.
+
+{% highlight js %}$('#element').tooltip('toggleEnabled'){% endhighlight %}
+
+#### `.tooltip('update')`
+
+Updates the position of an element's tooltip.
+
+{% highlight js %}$('#element').tooltip('update'){% endhighlight %}
+
+### Events
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th style="width: 150px;">Event Type</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>show.bs.tooltip</td>
+      <td>This event fires immediately when the <code>show</code> instance method is called.</td>
+    </tr>
+    <tr>
+      <td>shown.bs.tooltip</td>
+      <td>This event is fired when the tooltip has been made visible to the user (will wait for CSS transitions to complete).</td>
+    </tr>
+    <tr>
+      <td>hide.bs.tooltip</td>
+      <td>This event is fired immediately when the <code>hide</code> instance method has been called.</td>
+    </tr>
+    <tr>
+      <td>hidden.bs.tooltip</td>
+      <td>This event is fired when the tooltip has finished being hidden from the user (will wait for CSS transitions to complete).</td>
+    </tr>
+    <tr>
+      <td>inserted.bs.tooltip</td>
+      <td>This event is fired after the <code>show.bs.tooltip</code> event when the tooltip template has been added to the DOM.</td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight js %}
+$('#myTooltip').on('hidden.bs.tooltip', function () {
+  // do something…
+})
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/content/code.md b/vendor/twbs/bootstrap/site/docs/4.1/content/code.md
new file mode 100644
index 000000000..d1ce12ccd
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/content/code.md
@@ -0,0 +1,55 @@
+---
+layout: docs
+title: Code
+description: Documentation and examples for displaying inline and multiline blocks of code with Bootstrap.
+group: content
+toc: true
+---
+
+## Inline code
+
+Wrap inline snippets of code with `<code>`. Be sure to escape HTML angle brackets.
+
+{% capture example %}
+For example, <code>&lt;section&gt;</code> should be wrapped as inline.
+{% endcapture %}
+{% include example.html content=example %}
+
+## Code blocks
+
+Use `<pre>`s for multiple lines of code. Once again, be sure to escape any angle brackets in the code for proper rendering. You may optionally add the `.pre-scrollable` class, which will set a max-height of 340px and provide a y-axis scrollbar.
+
+{% capture example %}
+<pre><code>&lt;p&gt;Sample text here...&lt;/p&gt;
+&lt;p&gt;And another line of sample text here...&lt;/p&gt;
+</code></pre>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Variables
+
+For indicating variables use the `<var>` tag.
+
+{% capture example %}
+<var>y</var> = <var>m</var><var>x</var> + <var>b</var>
+{% endcapture %}
+{% include example.html content=example %}
+
+## User input
+
+Use the `<kbd>` to indicate input that is typically entered via keyboard.
+
+{% capture example %}
+To switch directories, type <kbd>cd</kbd> followed by the name of the directory.<br>
+To edit settings, press <kbd><kbd>ctrl</kbd> + <kbd>,</kbd></kbd>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Sample output
+
+For indicating sample output from a program use the `<samp>` tag.
+
+{% capture example %}
+<samp>This text is meant to be treated as sample output from a computer program.</samp>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/content/figures.md b/vendor/twbs/bootstrap/site/docs/4.1/content/figures.md
new file mode 100644
index 000000000..7041997ba
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/content/figures.md
@@ -0,0 +1,28 @@
+---
+layout: docs
+title: Figures
+description: Documentation and examples for displaying related images and text with the figure component in Bootstrap.
+group: content
+---
+
+Anytime you need to display a piece of content—like an image with an optional caption, consider using a `<figure>`.
+
+Use the included `.figure` , `.figure-img` and `.figure-caption` classes to provide some baseline styles for the HTML5 `<figure>` and `<figcaption>` elements. Images in figures have no explicit size, so be sure to add the `.img-fluid` class to your `<img>` to make it responsive.
+
+{% capture example %}
+<figure class="figure">
+  <img data-src="holder.js/400x300" class="figure-img img-fluid rounded" alt="A generic square placeholder image with rounded corners in a figure.">
+  <figcaption class="figure-caption">A caption for the above image.</figcaption>
+</figure>
+{% endcapture %}
+{% include example.html content=example %}
+
+Aligning the figure's caption is easy with our [text utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/text/#text-alignment).
+
+{% capture example %}
+<figure class="figure">
+  <img data-src="holder.js/400x300" class="figure-img img-fluid rounded" alt="A generic square placeholder image with rounded corners in a figure.">
+  <figcaption class="figure-caption text-right">A caption for the above image.</figcaption>
+</figure>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/content/images.md b/vendor/twbs/bootstrap/site/docs/4.1/content/images.md
new file mode 100644
index 000000000..49576da9d
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/content/images.md
@@ -0,0 +1,84 @@
+---
+layout: docs
+title: Images
+description: Documentation and examples for opting images into responsive behavior (so they never become larger than their parent elements) and add lightweight styles to them—all via classes.
+group: content
+toc: true
+---
+
+## Responsive images
+
+Images in Bootstrap are made responsive with `.img-fluid`. `max-width: 100%;` and `height: auto;` are applied to the image so that it scales with the parent element.
+
+<div class="bd-example">
+  <img data-src="holder.js/100px250" class="img-fluid" alt="Generic responsive image">
+</div>
+
+{% highlight html %}
+<img src="..." class="img-fluid" alt="Responsive image">
+{% endhighlight %}
+
+{% capture callout %}
+##### SVG images and IE 10
+
+In Internet Explorer 10, SVG images with `.img-fluid` are disproportionately sized. To fix this, add `width: 100% \9;` where necessary. This fix improperly sizes other image formats, so Bootstrap doesn't apply it automatically.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+## Image thumbnails
+
+In addition to our [border-radius utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/borders/), you can use `.img-thumbnail` to give an image a rounded 1px border appearance.
+
+<div class="bd-example bd-example-images">
+  <img data-src="holder.js/200x200" class="img-thumbnail" alt="A generic square placeholder image with a white border around it, making it resemble a photograph taken with an old instant camera">
+</div>
+
+{% highlight html %}
+<img src="..." alt="..." class="img-thumbnail">
+{% endhighlight %}
+
+## Aligning images
+
+Align images with the [helper float classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/float) or [text alignment classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/text/#text-alignment). `block`-level images can be centered using [the `.mx-auto` margin utility class]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/#horizontal-centering).
+
+<div class="bd-example bd-example-images">
+  <img data-src="holder.js/200x200" class="rounded float-left" alt="A generic square placeholder image with rounded corners">
+  <img data-src="holder.js/200x200" class="rounded float-right" alt="A generic square placeholder image with rounded corners">
+</div>
+
+{% highlight html %}
+<img src="..." class="rounded float-left" alt="...">
+<img src="..." class="rounded float-right" alt="...">
+{% endhighlight %}
+
+<div class="bd-example bd-example-images">
+  <img data-src="holder.js/200x200" class="rounded mx-auto d-block" alt="A generic square placeholder image with rounded corners">
+</div>
+
+{% highlight html %}
+<img src="..." class="rounded mx-auto d-block" alt="...">
+{% endhighlight %}
+
+<div class="bd-example bd-example-images">
+  <div class="text-center">
+    <img data-src="holder.js/200x200" class="rounded" alt="A generic square placeholder image with rounded corners">
+  </div>
+</div>
+
+{% highlight html %}
+<div class="text-center">
+  <img src="..." class="rounded" alt="...">
+</div>
+{% endhighlight %}
+
+
+## Picture
+
+If you are using the `<picture>` element to specify multiple `<source>` elements for a specific `<img>`, make sure to add the `.img-*` classes to the `<img>` and not to the `<picture>` tag.
+
+{% highlight html %}
+<picture>
+  <source srcset="..." type="image/svg+xml">
+  <img src="..." class="img-fluid img-thumbnail" alt="...">
+</picture>
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/content/reboot.md b/vendor/twbs/bootstrap/site/docs/4.1/content/reboot.md
new file mode 100644
index 000000000..0b9375d0a
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/content/reboot.md
@@ -0,0 +1,364 @@
+---
+layout: docs
+title: Reboot
+description: Reboot, a collection of element-specific CSS changes in a single file, kickstart Bootstrap to provide an elegant, consistent, and simple baseline to build upon.
+group: content
+redirect_from: "/docs/4.1/content/"
+toc: true
+---
+
+## Approach
+
+Reboot builds upon Normalize, providing many HTML elements with somewhat opinionated styles using only element selectors. Additional styling is done only with classes. For example, we reboot some `<table>` styles for a simpler baseline and later provide `.table`, `.table-bordered`, and more.
+
+Here are our guidelines and reasons for choosing what to override in Reboot:
+
+- Update some browser default values to use `rem`s instead of `em`s for scalable component spacing.
+- Avoid `margin-top`. Vertical margins can collapse, yielding unexpected results. More importantly though, a single direction of `margin` is a simpler mental model.
+- For easier scaling across device sizes, block elements should use `rem`s for `margin`s.
+- Keep declarations of `font`-related properties to a minimum, using `inherit` whenever possible.
+
+## Page defaults
+
+The `<html>` and `<body>` elements are updated to provide better page-wide defaults. More specifically:
+
+- The `box-sizing` is globally set on every element—including `*::before` and `*::after`, to `border-box`. This ensures that the declared width of element is never exceeded due to padding or border.
+  - No base `font-size` is declared on the `<html>`, but `16px` is assumed (the browser default). `font-size: 1rem` is applied on the `<body>` for easy responsive type-scaling via media queries while respecting user preferences and ensuring a more accessible approach.
+- The `<body>` also sets a global `font-family`, `line-height`, and `text-align`. This is inherited later by some form elements to prevent font inconsistencies.
+- For safety, the `<body>` has a declared `background-color`, defaulting to `#fff`.
+
+## Native font stack
+
+The default web fonts (Helvetica Neue, Helvetica, and Arial) have been dropped in Bootstrap 4 and replaced with a "native font stack" for optimum text rendering on every device and OS. Read more about [native font stacks in this *Smashing Magazine* article](https://www.smashingmagazine.com/2015/11/using-system-ui-fonts-practical-guide/).
+
+{% highlight sass %}
+$font-family-sans-serif:
+  // Safari for OS X and iOS (San Francisco)
+  -apple-system,
+  // Chrome < 56 for OS X (San Francisco)
+  BlinkMacSystemFont,
+  // Windows
+  "Segoe UI",
+  // Android
+  "Roboto",
+  // Basic web fallback
+  "Helvetica Neue", Arial, sans-serif,
+  // Emoji fonts
+  "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default;
+{% endhighlight %}
+
+This `font-family` is applied to the `<body>` and automatically inherited globally throughout Bootstrap. To switch the global `font-family`, update `$font-family-base` and recompile Bootstrap.
+
+## Headings and paragraphs
+
+All heading elements—e.g., `<h1>`—and `<p>` are reset to have their `margin-top` removed. Headings have `margin-bottom: .5rem` added and paragraphs `margin-bottom: 1rem` for easy spacing.
+
+<table>
+  <thead>
+    <tr>
+      <th>Heading</th>
+      <th>Example</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>
+        {{ "`<h1></h1>`" | markdownify }}
+      </td>
+      <td><span class="h1">h1. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h2></h2>`" | markdownify }}
+      </td>
+      <td><span class="h2">h2. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h3></h3>`" | markdownify }}
+      </td>
+      <td><span class="h3">h3. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h4></h4>`" | markdownify }}
+      </td>
+      <td><span class="h4">h4. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h5></h5>`" | markdownify }}
+      </td>
+      <td><span class="h5">h5. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h6></h6>`" | markdownify }}
+      </td>
+      <td><span class="h6">h6. Bootstrap heading</span></td>
+    </tr>
+  </tbody>
+</table>
+
+## Lists
+
+All lists—`<ul>`, `<ol>`, and `<dl>`—have their `margin-top` removed and a `margin-bottom: 1rem`. Nested lists have no `margin-bottom`.
+
+<div class="bd-example">
+{% capture markdown %}
+* Lorem ipsum dolor sit amet
+* Consectetur adipiscing elit
+* Integer molestie lorem at massa
+* Facilisis in pretium nisl aliquet
+* Nulla volutpat aliquam velit
+  * Phasellus iaculis neque
+  * Purus sodales ultricies
+  * Vestibulum laoreet porttitor sem
+  * Ac tristique libero volutpat at
+* Faucibus porta lacus fringilla vel
+* Aenean sit amet erat nunc
+* Eget porttitor lorem
+
+1. Lorem ipsum dolor sit amet
+2. Consectetur adipiscing elit
+3. Integer molestie lorem at massa
+4. Facilisis in pretium nisl aliquet
+5. Nulla volutpat aliquam velit
+6. Faucibus porta lacus fringilla vel
+7. Aenean sit amet erat nunc
+8. Eget porttitor lorem
+{% endcapture %}
+{{ markdown | markdownify }}
+</div>
+
+For simpler styling, clear hierarchy, and better spacing, description lists have updated `margin`s. `<dd>`s reset `margin-left` to `0` and add `margin-bottom: .5rem`. `<dt>`s are **bolded**.
+
+<div class="bd-example">
+  <dl>
+    <dt>Description lists</dt>
+    <dd>A description list is perfect for defining terms.</dd>
+    <dt>Euismod</dt>
+    <dd>Vestibulum id ligula porta felis euismod semper eget lacinia odio sem.</dd>
+    <dd>Donec id elit non mi porta gravida at eget metus.</dd>
+    <dt>Malesuada porta</dt>
+    <dd>Etiam porta sem malesuada magna mollis euismod.</dd>
+  </dl>
+</div>
+
+## Preformatted text
+
+The `<pre>` element is reset to remove its `margin-top` and use `rem` units for its `margin-bottom`.
+
+<div class="bd-example">
+<pre>
+.example-element {
+  margin-bottom: 1rem;
+}
+</pre>
+</div>
+
+## Tables
+
+Tables are slightly adjusted to style `<caption>`s, collapse borders, and ensure consistent `text-align` throughout. Additional changes for borders, padding, and more come with [the `.table` class]({{ site.baseurl }}/docs/{{ site.docs_version }}/content/tables/).
+
+<div class="bd-example">
+  <table>
+    <caption>
+      This is an example table, and this is its caption to describe the contents.
+    </caption>
+    <thead>
+      <tr>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+      <tr>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+      <tr>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+
+## Forms
+
+Various form elements have been rebooted for simpler base styles. Here are some of the most notable changes:
+
+- `<fieldset>`s have no borders, padding, or margin so they can be easily used as wrappers for individual inputs or groups of inputs.
+- `<legend>`s, like fieldsets, have also been restyled to be displayed as a heading of sorts.
+- `<label>`s are set to `display: inline-block` to allow `margin` to be applied.
+- `<input>`s, `<select>`s, `<textarea>`s, and `<button>`s are mostly addressed by Normalize, but Reboot removes their `margin` and sets `line-height: inherit`, too.
+- `<textarea>`s are modified to only be resizable vertically as horizontal resizing often "breaks" page layout.
+
+These changes, and more, are demonstrated below.
+
+<form class="bd-example">
+  <fieldset>
+    <legend>Example legend</legend>
+
+    <p>
+      <label for="input">Example input</label>
+      <input type="text" id="input" placeholder="Example input">
+    </p>
+
+    <p>
+      <label for="select">Example select</label>
+      <select id="select">
+        <option value="">Choose...</option>
+        <optgroup label="Option group 1">
+          <option value="">Option 1</option>
+          <option value="">Option 2</option>
+          <option value="">Option 3</option>
+        </optgroup>
+        <optgroup label="Option group 2">
+          <option value="">Option 4</option>
+          <option value="">Option 5</option>
+          <option value="">Option 6</option>
+        </optgroup>
+      </select>
+    </p>
+
+    <p>
+      <label>
+        <input type="checkbox" value="">
+        Check this checkbox
+      </label>
+    </p>
+
+    <p>
+      <label>
+        <input type="radio" name="optionsRadios" id="optionsRadios1" value="option1" checked>
+        Option one is this and that
+      </label>
+      <label>
+        <input type="radio" name="optionsRadios" id="optionsRadios2" value="option2">
+        Option two is something else that's also super long to demonstrate the wrapping of these fancy form controls.
+      </label>
+      <label>
+        <input type="radio" name="optionsRadios" id="optionsRadios3" value="option3" disabled>
+        Option three is disabled
+      </label>
+    </p>
+
+    <p>
+      <label for="textarea">Example textarea</label>
+      <textarea id="textarea" rows="3"></textarea>
+    </p>
+
+    <p>
+      <label for="date">Example date</label>
+      <input type="date" id="date">
+    </p>
+
+    <p>
+      <label for="time">Example time</label>
+      <input type="time" id="time">
+    </p>
+
+    <p>
+      <label for="output">Example output</label>
+      <output name="result" id="output">100</output>
+    </p>
+
+    <p>
+      <button type="submit">Button submit</button>
+      <input type="submit" value="Input submit button">
+      <input type="button" value="Input button">
+    </p>
+
+    <p>
+      <button type="submit" disabled>Button submit</button>
+      <input type="submit" value="Input submit button" disabled>
+      <input type="button" value="Input button" disabled>
+    </p>
+  </fieldset>
+</form>
+
+## Misc elements
+
+### Address
+
+The `<address>` element is updated to reset the browser default `font-style` from `italic` to `normal`. `line-height` is also now inherited, and `margin-bottom: 1rem` has been added. `<address>`s are for presenting contact information for the nearest ancestor (or an entire body of work). Preserve formatting by ending lines with `<br>`.
+
+<div class="bd-example">
+  <address>
+    <strong>Twitter, Inc.</strong><br>
+    1355 Market St, Suite 900<br>
+    San Francisco, CA 94103<br>
+    <abbr title="Phone">P:</abbr> (123) 456-7890
+  </address>
+
+  <address>
+    <strong>Full Name</strong><br>
+    <a href="mailto:#">first.last@example.com</a>
+  </address>
+</div>
+
+### Blockquote
+
+The default `margin` on blockquotes is `1em 40px`, so we reset that to `0 0 1rem` for something more consistent with other elements.
+
+<div class="bd-example">
+  <blockquote class="blockquote">
+    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+    <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
+  </blockquote>
+</div>
+
+### Inline elements
+
+The `<abbr>` element receives basic styling to make it stand out amongst paragraph text.
+
+<div class="bd-example">
+  Nulla <abbr title="attribute">attr</abbr> vitae elit libero, a pharetra augue.
+</div>
+
+### Summary
+
+The default `cursor` on summary is `text`, so we reset that to `pointer` to convey that the element can be interacted with by clicking on it.
+
+<div class="bd-example">
+  <details>
+    <summary>Some details</summary>
+    <p>More info about the details.</p>
+  </details>
+
+  <details open>
+    <summary>Even more details</summary>
+    <p>Here are even more details about the details.</p>
+  </details>
+</div>
+
+## HTML5 `[hidden]` attribute
+
+HTML5 adds [a new global attribute named `[hidden]`](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/hidden), which is styled as `display: none` by default. Borrowing an idea from [PureCSS](https://purecss.io/), we improve upon this default by making `[hidden] { display: none !important; }` to help prevent its `display` from getting accidentally overridden. While `[hidden]` isn't natively supported by IE10, the explicit declaration in our CSS gets around that problem.
+
+{% highlight html %}
+<input type="text" hidden>
+{% endhighlight %}
+
+{% capture callout %}
+##### jQuery incompatibility
+
+`[hidden]` is not compatible with jQuery's `$(...).hide()` and `$(...).show()` methods. Therefore, we don't currently especially endorse `[hidden]` over other techniques for managing the `display` of elements.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+To merely toggle the visibility of an element, meaning its `display` is not modified and the element can still affect the flow of the document, use [the `.invisible` class]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/visibility/) instead.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/content/tables.md b/vendor/twbs/bootstrap/site/docs/4.1/content/tables.md
new file mode 100644
index 000000000..8799d47f2
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/content/tables.md
@@ -0,0 +1,831 @@
+---
+layout: docs
+title: Tables
+description: Documentation and examples for opt-in styling of tables (given their prevalent use in JavaScript plugins) with Bootstrap.
+group: content
+toc: true
+---
+
+## Examples
+
+Due to the widespread use of tables across third-party widgets like calendars and date pickers, we've designed our tables to be **opt-in**. Just add the base class `.table` to any `<table>`, then extend with custom styles or our various included modifier classes.
+
+Using the most basic table markup, here's how `.table`-based tables look in Bootstrap. **All table styles are inherited in Bootstrap 4**, meaning any nested tables will be styled in the same manner as the parent.
+
+{% capture example %}
+<table class="table">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td>Larry</td>
+      <td>the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+You can also invert the colors—with light text on dark backgrounds—with `.table-dark`.
+
+{% capture example %}
+<table class="table table-dark">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td>Larry</td>
+      <td>the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Table head options
+
+Similar to tables and dark tables, use the modifier classes `.thead-light` or `.thead-dark` to make `<thead>`s appear light or dark gray.
+
+{% capture example %}
+<table class="table">
+  <thead class="thead-dark">
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td>Larry</td>
+      <td>the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+
+<table class="table">
+  <thead class="thead-light">
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td>Larry</td>
+      <td>the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Striped rows
+
+Use `.table-striped` to add zebra-striping to any table row within the `<tbody>`.
+
+{% capture example %}
+<table class="table table-striped">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td>Larry</td>
+      <td>the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<table class="table table-striped table-dark">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td>Larry</td>
+      <td>the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Bordered table
+
+Add `.table-bordered` for borders on all sides of the table and cells.
+
+{% capture example %}
+<table class="table table-bordered">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<table class="table table-bordered table-dark">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Borderless table
+
+Add `.table-borderless` for a table without borders.
+
+{% capture example %}
+<table class="table table-borderless">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+`.table-borderless` can also be used on dark tables.
+
+{% capture example %}
+<table class="table table-borderless table-dark">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Hoverable rows
+
+Add `.table-hover` to enable a hover state on table rows within a `<tbody>`.
+
+{% capture example %}
+<table class="table table-hover">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<table class="table table-hover table-dark">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Small table
+
+Add `.table-sm` to make tables more compact by cutting cell padding in half.
+
+{% capture example %}
+<table class="table table-sm">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<table class="table table-sm table-dark">
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td colspan="2">Larry the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Contextual classes
+
+Use contextual classes to color table rows or individual cells.
+
+<div class="bd-example">
+  <table class="table">
+    <thead>
+      <tr>
+        <th scope="col">Class</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr class="table-active">
+        <th scope="row">Active</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr>
+        <th scope="row">Default</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+
+      {% for color in site.data.theme-colors %}
+      <tr class="table-{{ color.name }}">
+        <th scope="row">{{ color.name | capitalize }}</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>{% endfor %}
+    </tbody>
+  </table>
+</div>
+
+{% highlight html %}
+<!-- On rows -->
+<tr class="table-active">...</tr>
+{% for color in site.data.theme-colors %}
+<tr class="table-{{ color.name }}">...</tr>{% endfor %}
+
+<!-- On cells (`td` or `th`) -->
+<tr>
+  <td class="table-active">...</td>
+  {% for color in site.data.theme-colors %}
+  <td class="table-{{ color.name }}">...</td>{% endfor %}
+</tr>
+{% endhighlight %}
+
+Regular table background variants are not available with the dark table, however, you may use [text or background utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/colors/) to achieve similar styles.
+
+<div class="bd-example">
+  <table class="table table-dark">
+    <thead>
+      <tr>
+        <th scope="col">#</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr class="bg-primary">
+        <th scope="row">1</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr>
+        <th scope="row">2</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr class="bg-success">
+        <th scope="row">3</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr>
+        <th scope="row">4</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr class="bg-info">
+        <th scope="row">5</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr>
+        <th scope="row">6</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr class="bg-warning">
+        <th scope="row">7</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr>
+        <th scope="row">8</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr class="bg-danger">
+        <th scope="row">9</th>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+
+{% highlight html %}
+<!-- On rows -->
+<tr class="bg-primary">...</tr>
+<tr class="bg-success">...</tr>
+<tr class="bg-warning">...</tr>
+<tr class="bg-danger">...</tr>
+<tr class="bg-info">...</tr>
+
+<!-- On cells (`td` or `th`) -->
+<tr>
+  <td class="bg-primary">...</td>
+  <td class="bg-success">...</td>
+  <td class="bg-warning">...</td>
+  <td class="bg-danger">...</td>
+  <td class="bg-info">...</td>
+</tr>
+{% endhighlight %}
+
+{% include callout-warning-color-assistive-technologies.md %}
+
+Create responsive tables by wrapping any `.table` with `.table-responsive{-sm|-md|-lg|-xl}`, making the table scroll horizontally at each `max-width` breakpoint of up to (but not including) 576px, 768px, 992px, and 1120px, respectively.
+
+{% include callout-info-mediaqueries-breakpoints.md %}
+
+## Captions
+
+A `<caption>` functions like a heading for a table. It helps users with screen readers to find a table and understand what it's about and decide if they want to read it.
+
+{% capture example %}
+<table class="table">
+  <caption>List of users</caption>
+  <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">First</th>
+      <th scope="col">Last</th>
+      <th scope="col">Handle</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">1</th>
+      <td>Mark</td>
+      <td>Otto</td>
+      <td>@mdo</td>
+    </tr>
+    <tr>
+      <th scope="row">2</th>
+      <td>Jacob</td>
+      <td>Thornton</td>
+      <td>@fat</td>
+    </tr>
+    <tr>
+      <th scope="row">3</th>
+      <td>Larry</td>
+      <td>the Bird</td>
+      <td>@twitter</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Responsive tables
+
+Responsive tables allow tables to be scrolled horizontally with ease. Make any table responsive across all viewports by wrapping a `.table` with `.table-responsive`. Or, pick a maximum breakpoint with which to have a responsive table up to by using `.table-responsive{-sm|-md|-lg|-xl}`.
+
+{% capture callout %}
+##### Vertical clipping/truncation
+
+Responsive tables make use of `overflow-y: hidden`, which clips off any content that goes beyond the bottom or top edges of the table. In particular, this can clip off dropdown menus and other third-party widgets.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+### Always responsive
+
+Across every breakpoint, use `.table-responsive` for horizontally scrolling tables.
+
+<div class="bd-example">
+  <div class="table-responsive">
+    <table class="table">
+      <thead>
+        <tr>
+          <th scope="col">#</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+          <th scope="col">Heading</th>
+        </tr>
+      </thead>
+      <tbody>
+        <tr>
+          <th scope="row">1</th>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+        </tr>
+        <tr>
+          <th scope="row">2</th>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+        </tr>
+        <tr>
+          <th scope="row">3</th>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+          <td>Cell</td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="table-responsive">
+  <table class="table">
+    ...
+  </table>
+</div>
+{% endhighlight %}
+
+### Breakpoint specific
+
+Use `.table-responsive{-sm|-md|-lg|-xl}` as needed to create responsive tables up to a particular breakpoint. From that breakpoint and up, the table will behave normally and not scroll horizontally.
+
+**These tables may appear broken until their responsive styles apply at specific viewport widths.**
+
+{% for bp in site.data.breakpoints %}{% unless bp.breakpoint == "xs" %}
+<div class="bd-example">
+<div class="table-responsive{{ bp.abbr }}">
+  <table class="table">
+    <thead>
+      <tr>
+        <th scope="col">#</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+        <th scope="col">Heading</th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr>
+        <th scope="row">1</th>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr>
+        <th scope="row">2</th>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+      <tr>
+        <th scope="row">3</th>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+        <td>Cell</td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+</div>
+{% highlight html %}
+<div class="table-responsive{{ bp.abbr }}">
+  <table class="table">
+    ...
+  </table>
+</div>
+{% endhighlight %}
+{% endunless %}{% endfor %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/content/typography.md b/vendor/twbs/bootstrap/site/docs/4.1/content/typography.md
new file mode 100644
index 000000000..795f807b6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/content/typography.md
@@ -0,0 +1,331 @@
+---
+layout: docs
+title: Typography
+description: Documentation and examples for Bootstrap typography, including global settings, headings, body text, lists, and more.
+group: content
+toc: true
+---
+
+## Global settings
+
+Bootstrap sets basic global display, typography, and link styles. When more control is needed, check out the [textual utility classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/text/).
+
+- Use a [native font stack]({{ site.baseurl }}/docs/{{ site.docs_version }}/content/reboot/#native-font-stack) that selects the best `font-family` for each OS and device.
+- For a more inclusive and accessible type scale, we assume the browser default root `font-size` (typically 16px) so visitors can customize their browser defaults as needed.
+- Use the `$font-family-base`, `$font-size-base`, and `$line-height-base` attributes as our typographic base applied to the `<body>`.
+- Set the global link color via `$link-color` and apply link underlines only on `:hover`.
+- Use `$body-bg` to set a `background-color` on the `<body>` (`#fff` by default).
+
+These styles can be found within `_reboot.scss`, and the global variables are defined in `_variables.scss`. Make sure to set `$font-size-base` in `rem`.
+
+## Headings
+
+All HTML headings, `<h1>` through `<h6>`, are available.
+
+<table>
+  <thead>
+    <tr>
+      <th>Heading</th>
+      <th>Example</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>
+        {{ "`<h1></h1>`" | markdownify }}
+      </td>
+      <td><span class="h1">h1. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h2></h2>`" | markdownify }}
+      </td>
+      <td><span class="h2">h2. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h3></h3>`" | markdownify }}
+      </td>
+      <td><span class="h3">h3. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h4></h4>`" | markdownify }}
+      </td>
+      <td><span class="h4">h4. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h5></h5>`" | markdownify }}
+      </td>
+      <td><span class="h5">h5. Bootstrap heading</span></td>
+    </tr>
+    <tr>
+      <td>
+        {{ "`<h6></h6>`" | markdownify }}
+      </td>
+      <td><span class="h6">h6. Bootstrap heading</span></td>
+    </tr>
+  </tbody>
+</table>
+
+{% highlight html %}
+<h1>h1. Bootstrap heading</h1>
+<h2>h2. Bootstrap heading</h2>
+<h3>h3. Bootstrap heading</h3>
+<h4>h4. Bootstrap heading</h4>
+<h5>h5. Bootstrap heading</h5>
+<h6>h6. Bootstrap heading</h6>
+{% endhighlight %}
+
+`.h1` through `.h6` classes are also available, for when you want to match the font styling of a heading but cannot use the associated HTML element.
+
+{% capture example %}
+<p class="h1">h1. Bootstrap heading</p>
+<p class="h2">h2. Bootstrap heading</p>
+<p class="h3">h3. Bootstrap heading</p>
+<p class="h4">h4. Bootstrap heading</p>
+<p class="h5">h5. Bootstrap heading</p>
+<p class="h6">h6. Bootstrap heading</p>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Customizing headings
+
+Use the included utility classes to recreate the small secondary heading text from Bootstrap 3.
+
+<div class="bd-example">
+  <span class="h3">
+    Fancy display heading
+    <small class="text-muted">With faded secondary text</small>
+  </span>
+</div>
+
+{% highlight html %}
+<h3>
+  Fancy display heading
+  <small class="text-muted">With faded secondary text</small>
+</h3>
+{% endhighlight %}
+
+## Display headings
+
+Traditional heading elements are designed to work best in the meat of your page content. When you need a heading to stand out, consider using a **display heading**—a larger, slightly more opinionated heading style.
+
+<div class="bd-example bd-example-type">
+  <table class="table">
+    <tbody>
+      <tr>
+        <td><span class="display-1">Display 1</span></td>
+      </tr>
+      <tr>
+      <td><span class="display-2">Display 2</span></td>
+      </tr>
+      <tr>
+      <td><span class="display-3">Display 3</span></td>
+      </tr>
+      <tr>
+      <td><span class="display-4">Display 4</span></td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+
+{% highlight html %}
+<h1 class="display-1">Display 1</h1>
+<h1 class="display-2">Display 2</h1>
+<h1 class="display-3">Display 3</h1>
+<h1 class="display-4">Display 4</h1>
+{% endhighlight %}
+
+## Lead
+
+Make a paragraph stand out by adding `.lead`.
+
+{% capture example %}
+<p class="lead">
+  Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus.
+</p>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Inline text elements
+
+Styling for common inline HTML5 elements.
+
+{% capture example %}
+<p>You can use the mark tag to <mark>highlight</mark> text.</p>
+<p><del>This line of text is meant to be treated as deleted text.</del></p>
+<p><s>This line of text is meant to be treated as no longer accurate.</s></p>
+<p><ins>This line of text is meant to be treated as an addition to the document.</ins></p>
+<p><u>This line of text will render as underlined</u></p>
+<p><small>This line of text is meant to be treated as fine print.</small></p>
+<p><strong>This line rendered as bold text.</strong></p>
+<p><em>This line rendered as italicized text.</em></p>
+{% endcapture %}
+{% include example.html content=example %}
+
+`.mark` and `.small` classes are also available to apply the same styles as `<mark>` and `<small>` while avoiding any unwanted semantic implications that the tags would bring.
+
+While not shown above, feel free to use `<b>` and `<i>` in HTML5. `<b>` is meant to highlight words or phrases without conveying additional importance while `<i>` is mostly for voice, technical terms, etc.
+
+## Text utilities
+
+Change text alignment, transform, style, weight, and color with our [text utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/text/) and [color utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/colors/).
+
+## Abbreviations
+
+Stylized implementation of HTML's `<abbr>` element for abbreviations and acronyms to show the expanded version on hover. Abbreviations have a default underline and gain a help cursor to provide additional context on hover and to users of assistive technologies.
+
+Add `.initialism` to an abbreviation for a slightly smaller font-size.
+
+{% capture example %}
+<p><abbr title="attribute">attr</abbr></p>
+<p><abbr title="HyperText Markup Language" class="initialism">HTML</abbr></p>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Blockquotes
+
+For quoting blocks of content from another source within your document. Wrap `<blockquote class="blockquote">` around any <abbr title="HyperText Markup Language">HTML</abbr> as the quote.
+
+{% capture example %}
+<blockquote class="blockquote">
+  <p class="mb-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+</blockquote>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Naming a source
+
+Add a `<footer class="blockquote-footer">` for identifying the source. Wrap the name of the source work in `<cite>`.
+
+{% capture example %}
+<blockquote class="blockquote">
+  <p class="mb-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+  <footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
+</blockquote>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Alignment
+
+Use text utilities as needed to change the alignment of your blockquote.
+
+{% capture example %}
+<blockquote class="blockquote text-center">
+  <p class="mb-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+  <footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
+</blockquote>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<blockquote class="blockquote text-right">
+  <p class="mb-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+  <footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
+</blockquote>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Lists
+
+### Unstyled
+
+Remove the default `list-style` and left margin on list items (immediate children only). **This only applies to immediate children list items**, meaning you will need to add the class for any nested lists as well.
+
+{% capture example %}
+<ul class="list-unstyled">
+  <li>Lorem ipsum dolor sit amet</li>
+  <li>Consectetur adipiscing elit</li>
+  <li>Integer molestie lorem at massa</li>
+  <li>Facilisis in pretium nisl aliquet</li>
+  <li>Nulla volutpat aliquam velit
+    <ul>
+      <li>Phasellus iaculis neque</li>
+      <li>Purus sodales ultricies</li>
+      <li>Vestibulum laoreet porttitor sem</li>
+      <li>Ac tristique libero volutpat at</li>
+    </ul>
+  </li>
+  <li>Faucibus porta lacus fringilla vel</li>
+  <li>Aenean sit amet erat nunc</li>
+  <li>Eget porttitor lorem</li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Inline
+
+Remove a list's bullets and apply some light `margin` with a combination of two classes, `.list-inline` and `.list-inline-item`.
+
+{% capture example %}
+<ul class="list-inline">
+  <li class="list-inline-item">Lorem ipsum</li>
+  <li class="list-inline-item">Phasellus iaculis</li>
+  <li class="list-inline-item">Nulla volutpat</li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
+
+### Description list alignment
+
+Align terms and descriptions horizontally by using our grid system's predefined classes (or semantic mixins). For longer terms, you can optionally add a `.text-truncate` class to truncate the text with an ellipsis.
+
+{% capture example %}
+<dl class="row">
+  <dt class="col-sm-3">Description lists</dt>
+  <dd class="col-sm-9">A description list is perfect for defining terms.</dd>
+
+  <dt class="col-sm-3">Euismod</dt>
+  <dd class="col-sm-9">
+    <p>Vestibulum id ligula porta felis euismod semper eget lacinia odio sem nec elit.</p>
+    <p>Donec id elit non mi porta gravida at eget metus.</p>
+  </dd>
+
+  <dt class="col-sm-3">Malesuada porta</dt>
+  <dd class="col-sm-9">Etiam porta sem malesuada magna mollis euismod.</dd>
+
+  <dt class="col-sm-3 text-truncate">Truncated term is truncated</dt>
+  <dd class="col-sm-9">Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</dd>
+
+  <dt class="col-sm-3">Nesting</dt>
+  <dd class="col-sm-9">
+    <dl class="row">
+      <dt class="col-sm-4">Nested definition list</dt>
+      <dd class="col-sm-8">Aenean posuere, tortor sed cursus feugiat, nunc augue blandit nunc.</dd>
+    </dl>
+  </dd>
+</dl>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Responsive typography
+
+*Responsive typography* refers to scaling text and components by simply adjusting the root element's `font-size` within a series of media queries. Bootstrap doesn't do this for you, but it's fairly easy to add if you need it.
+
+Here's an example of it in practice. Choose whatever `font-size`s and media queries you wish.
+
+{% highlight scss %}
+html {
+  font-size: 1rem;
+}
+
+@include media-breakpoint-up(sm) {
+  html {
+    font-size: 1.2rem;
+  }
+}
+
+@include media-breakpoint-up(md) {
+  html {
+    font-size: 1.4rem;
+  }
+}
+
+@include media-breakpoint-up(lg) {
+  html {
+    font-size: 1.6rem;
+  }
+}
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/.eslintrc.json b/vendor/twbs/bootstrap/site/docs/4.1/examples/.eslintrc.json
new file mode 100644
index 000000000..f04fd6ae1
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/.eslintrc.json
@@ -0,0 +1,11 @@
+{
+  "env": {
+    "es6": false,
+    "jquery": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 5,
+    "sourceType": "script"
+  },
+  "extends": "../../../js/tests/unit/.eslintrc.json"
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/.stylelintrc b/vendor/twbs/bootstrap/site/docs/4.1/examples/.stylelintrc
new file mode 100644
index 000000000..6a77dcedb
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/.stylelintrc
@@ -0,0 +1,12 @@
+{
+  "extends": "../../../.stylelintrc",
+  "rules": {
+    "at-rule-no-vendor-prefix": null,
+    "comment-empty-line-before": null,
+    "media-feature-name-no-vendor-prefix": null,
+    "property-no-vendor-prefix": null,
+    "selector-no-qualifying-type": null,
+    "selector-no-vendor-prefix": null,
+    "value-no-vendor-prefix": null
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/album/album.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/album/album.css
new file mode 100644
index 000000000..f9d1518d3
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/album/album.css
@@ -0,0 +1,37 @@
+:root {
+  --jumbotron-padding-y: 3rem;
+}
+
+.jumbotron {
+  padding-top: var(--jumbotron-padding-y);
+  padding-bottom: var(--jumbotron-padding-y);
+  margin-bottom: 0;
+  background-color: #fff;
+}
+@media (min-width: 768px) {
+  .jumbotron {
+    padding-top: calc(var(--jumbotron-padding-y) * 2);
+    padding-bottom: calc(var(--jumbotron-padding-y) * 2);
+  }
+}
+
+.jumbotron p:last-child {
+  margin-bottom: 0;
+}
+
+.jumbotron-heading {
+  font-weight: 300;
+}
+
+.jumbotron .container {
+  max-width: 40rem;
+}
+
+footer {
+  padding-top: 3rem;
+  padding-bottom: 3rem;
+}
+
+footer p {
+  margin-bottom: .25rem;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/album/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/album/index.html
new file mode 100644
index 000000000..b30aea068
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/album/index.html
@@ -0,0 +1,232 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Album example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="album.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <header>
+      <div class="collapse bg-dark" id="navbarHeader">
+        <div class="container">
+          <div class="row">
+            <div class="col-sm-8 col-md-7 py-4">
+              <h4 class="text-white">About</h4>
+              <p class="text-muted">Add some information about the album below, the author, or any other background context. Make it a few sentences long so folks can pick up some informative tidbits. Then, link them off to some social networking sites or contact information.</p>
+            </div>
+            <div class="col-sm-4 offset-md-1 py-4">
+              <h4 class="text-white">Contact</h4>
+              <ul class="list-unstyled">
+                <li><a href="#" class="text-white">Follow on Twitter</a></li>
+                <li><a href="#" class="text-white">Like on Facebook</a></li>
+                <li><a href="#" class="text-white">Email me</a></li>
+              </ul>
+            </div>
+          </div>
+        </div>
+      </div>
+      <div class="navbar navbar-dark bg-dark shadow-sm">
+        <div class="container d-flex justify-content-between">
+          <a href="#" class="navbar-brand d-flex align-items-center">
+            <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="mr-2"><path d="M23 19a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4l2-3h6l2 3h4a2 2 0 0 1 2 2z"></path><circle cx="12" cy="13" r="4"></circle></svg>
+            <strong>Album</strong>
+          </a>
+          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarHeader" aria-controls="navbarHeader" aria-expanded="false" aria-label="Toggle navigation">
+            <span class="navbar-toggler-icon"></span>
+          </button>
+        </div>
+      </div>
+    </header>
+
+    <main role="main">
+
+      <section class="jumbotron text-center">
+        <div class="container">
+          <h1 class="jumbotron-heading">Album example</h1>
+          <p class="lead text-muted">Something short and leading about the collection below—its contents, the creator, etc. Make it short and sweet, but not too short so folks don't simply skip over it entirely.</p>
+          <p>
+            <a href="#" class="btn btn-primary my-2">Main call to action</a>
+            <a href="#" class="btn btn-secondary my-2">Secondary action</a>
+          </p>
+        </div>
+      </section>
+
+      <div class="album py-5 bg-light">
+        <div class="container">
+
+          <div class="row">
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div class="col-md-4">
+              <div class="card mb-4 shadow-sm">
+                <img class="card-img-top" data-src="holder.js/100px225?theme=thumb&bg=55595c&fg=eceeef&text=Thumbnail" alt="Card image cap">
+                <div class="card-body">
+                  <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
+                  <div class="d-flex justify-content-between align-items-center">
+                    <div class="btn-group">
+                      <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
+                      <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
+                    </div>
+                    <small class="text-muted">9 mins</small>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+
+    </main>
+
+    <footer class="text-muted">
+      <div class="container">
+        <p class="float-right">
+          <a href="#">Back to top</a>
+        </p>
+        <p>Album example is &copy; Bootstrap, but please download and customize it for yourself!</p>
+        <p>New to Bootstrap? <a href="../../">Visit the homepage</a> or read our <a href="../../getting-started/">getting started guide</a>.</p>
+      </div>
+    </footer>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <script src="../../assets/js/vendor/holder.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/blog/blog.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/blog/blog.css
new file mode 100644
index 000000000..b60d0d2e9
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/blog/blog.css
@@ -0,0 +1,125 @@
+/* stylelint-disable selector-list-comma-newline-after */
+
+.blog-header {
+  line-height: 1;
+  border-bottom: 1px solid #e5e5e5;
+}
+
+.blog-header-logo {
+  font-family: "Playfair Display", Georgia, "Times New Roman", serif;
+  font-size: 2.25rem;
+}
+
+.blog-header-logo:hover {
+  text-decoration: none;
+}
+
+h1, h2, h3, h4, h5, h6 {
+  font-family: "Playfair Display", Georgia, "Times New Roman", serif;
+}
+
+.display-4 {
+  font-size: 2.5rem;
+}
+@media (min-width: 768px) {
+  .display-4 {
+    font-size: 3rem;
+  }
+}
+
+.nav-scroller {
+  position: relative;
+  z-index: 2;
+  height: 2.75rem;
+  overflow-y: hidden;
+}
+
+.nav-scroller .nav {
+  display: -ms-flexbox;
+  display: flex;
+  -ms-flex-wrap: nowrap;
+  flex-wrap: nowrap;
+  padding-bottom: 1rem;
+  margin-top: -1px;
+  overflow-x: auto;
+  text-align: center;
+  white-space: nowrap;
+  -webkit-overflow-scrolling: touch;
+}
+
+.nav-scroller .nav-link {
+  padding-top: .75rem;
+  padding-bottom: .75rem;
+  font-size: .875rem;
+}
+
+.card-img-right {
+  height: 100%;
+  border-radius: 0 3px 3px 0;
+}
+
+.flex-auto {
+  -ms-flex: 0 0 auto;
+  flex: 0 0 auto;
+}
+
+.h-250 { height: 250px; }
+@media (min-width: 768px) {
+  .h-md-250 { height: 250px; }
+}
+
+/*
+ * Blog name and description
+ */
+.blog-title {
+  margin-bottom: 0;
+  font-size: 2rem;
+  font-weight: 400;
+}
+.blog-description {
+  font-size: 1.1rem;
+  color: #999;
+}
+
+@media (min-width: 40em) {
+  .blog-title {
+    font-size: 3.5rem;
+  }
+}
+
+/* Pagination */
+.blog-pagination {
+  margin-bottom: 4rem;
+}
+.blog-pagination > .btn {
+  border-radius: 2rem;
+}
+
+/*
+ * Blog posts
+ */
+.blog-post {
+  margin-bottom: 4rem;
+}
+.blog-post-title {
+  margin-bottom: .25rem;
+  font-size: 2.5rem;
+}
+.blog-post-meta {
+  margin-bottom: 1.25rem;
+  color: #999;
+}
+
+/*
+ * Footer
+ */
+.blog-footer {
+  padding: 2.5rem 0;
+  color: #999;
+  text-align: center;
+  background-color: #f9f9f9;
+  border-top: .05rem solid #e5e5e5;
+}
+.blog-footer p:last-child {
+  margin-bottom: 0;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/blog/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/blog/index.html
new file mode 100644
index 000000000..fef06c476
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/blog/index.html
@@ -0,0 +1,231 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Blog Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="https://fonts.googleapis.com/css?family=Playfair+Display:700,900" rel="stylesheet">
+    <link href="blog.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <div class="container">
+      <header class="blog-header py-3">
+        <div class="row flex-nowrap justify-content-between align-items-center">
+          <div class="col-4 pt-1">
+            <a class="text-muted" href="#">Subscribe</a>
+          </div>
+          <div class="col-4 text-center">
+            <a class="blog-header-logo text-dark" href="#">Large</a>
+          </div>
+          <div class="col-4 d-flex justify-content-end align-items-center">
+            <a class="text-muted" href="#">
+              <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="mx-3"><circle cx="10.5" cy="10.5" r="7.5"></circle><line x1="21" y1="21" x2="15.8" y2="15.8"></line></svg>
+            </a>
+            <a class="btn btn-sm btn-outline-secondary" href="#">Sign up</a>
+          </div>
+        </div>
+      </header>
+
+      <div class="nav-scroller py-1 mb-2">
+        <nav class="nav d-flex justify-content-between">
+          <a class="p-2 text-muted" href="#">World</a>
+          <a class="p-2 text-muted" href="#">U.S.</a>
+          <a class="p-2 text-muted" href="#">Technology</a>
+          <a class="p-2 text-muted" href="#">Design</a>
+          <a class="p-2 text-muted" href="#">Culture</a>
+          <a class="p-2 text-muted" href="#">Business</a>
+          <a class="p-2 text-muted" href="#">Politics</a>
+          <a class="p-2 text-muted" href="#">Opinion</a>
+          <a class="p-2 text-muted" href="#">Science</a>
+          <a class="p-2 text-muted" href="#">Health</a>
+          <a class="p-2 text-muted" href="#">Style</a>
+          <a class="p-2 text-muted" href="#">Travel</a>
+        </nav>
+      </div>
+
+      <div class="jumbotron p-3 p-md-5 text-white rounded bg-dark">
+        <div class="col-md-6 px-0">
+          <h1 class="display-4 font-italic">Title of a longer featured blog post</h1>
+          <p class="lead my-3">Multiple lines of text that form the lede, informing new readers quickly and efficiently about what's most interesting in this post's contents.</p>
+          <p class="lead mb-0"><a href="#" class="text-white font-weight-bold">Continue reading...</a></p>
+        </div>
+      </div>
+
+      <div class="row mb-2">
+        <div class="col-md-6">
+          <div class="card flex-md-row mb-4 shadow-sm h-md-250">
+            <div class="card-body d-flex flex-column align-items-start">
+              <strong class="d-inline-block mb-2 text-primary">World</strong>
+              <h3 class="mb-0">
+                <a class="text-dark" href="#">Featured post</a>
+              </h3>
+              <div class="mb-1 text-muted">Nov 12</div>
+              <p class="card-text mb-auto">This is a wider card with supporting text below as a natural lead-in to additional content.</p>
+              <a href="#">Continue reading</a>
+            </div>
+            <img class="card-img-right flex-auto d-none d-lg-block" data-src="holder.js/200x250?theme=thumb" alt="Card image cap">
+          </div>
+        </div>
+        <div class="col-md-6">
+          <div class="card flex-md-row mb-4 shadow-sm h-md-250">
+            <div class="card-body d-flex flex-column align-items-start">
+              <strong class="d-inline-block mb-2 text-success">Design</strong>
+              <h3 class="mb-0">
+                <a class="text-dark" href="#">Post title</a>
+              </h3>
+              <div class="mb-1 text-muted">Nov 11</div>
+              <p class="card-text mb-auto">This is a wider card with supporting text below as a natural lead-in to additional content.</p>
+              <a href="#">Continue reading</a>
+            </div>
+            <img class="card-img-right flex-auto d-none d-lg-block" data-src="holder.js/200x250?theme=thumb" alt="Card image cap">
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <main role="main" class="container">
+      <div class="row">
+        <div class="col-md-8 blog-main">
+          <h3 class="pb-3 mb-4 font-italic border-bottom">
+            From the Firehose
+          </h3>
+
+          <div class="blog-post">
+            <h2 class="blog-post-title">Sample blog post</h2>
+            <p class="blog-post-meta">January 1, 2014 by <a href="#">Mark</a></p>
+
+            <p>This blog post shows a few different types of content that's supported and styled with Bootstrap. Basic typography, images, and code are all supported.</p>
+            <hr>
+            <p>Cum sociis natoque penatibus et magnis <a href="#">dis parturient montes</a>, nascetur ridiculus mus. Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum. Sed posuere consectetur est at lobortis. Cras mattis consectetur purus sit amet fermentum.</p>
+            <blockquote>
+              <p>Curabitur blandit tempus porttitor. <strong>Nullam quis risus eget urna mollis</strong> ornare vel eu leo. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
+            </blockquote>
+            <p>Etiam porta <em>sem malesuada magna</em> mollis euismod. Cras mattis consectetur purus sit amet fermentum. Aenean lacinia bibendum nulla sed consectetur.</p>
+            <h2>Heading</h2>
+            <p>Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+            <h3>Sub-heading</h3>
+            <p>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
+            <pre><code>Example code block</code></pre>
+            <p>Aenean lacinia bibendum nulla sed consectetur. Etiam porta sem malesuada magna mollis euismod. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa.</p>
+            <h3>Sub-heading</h3>
+            <p>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Aenean lacinia bibendum nulla sed consectetur. Etiam porta sem malesuada magna mollis euismod. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
+            <ul>
+              <li>Praesent commodo cursus magna, vel scelerisque nisl consectetur et.</li>
+              <li>Donec id elit non mi porta gravida at eget metus.</li>
+              <li>Nulla vitae elit libero, a pharetra augue.</li>
+            </ul>
+            <p>Donec ullamcorper nulla non metus auctor fringilla. Nulla vitae elit libero, a pharetra augue.</p>
+            <ol>
+              <li>Vestibulum id ligula porta felis euismod semper.</li>
+              <li>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</li>
+              <li>Maecenas sed diam eget risus varius blandit sit amet non magna.</li>
+            </ol>
+            <p>Cras mattis consectetur purus sit amet fermentum. Sed posuere consectetur est at lobortis.</p>
+          </div><!-- /.blog-post -->
+
+          <div class="blog-post">
+            <h2 class="blog-post-title">Another blog post</h2>
+            <p class="blog-post-meta">December 23, 2013 by <a href="#">Jacob</a></p>
+
+            <p>Cum sociis natoque penatibus et magnis <a href="#">dis parturient montes</a>, nascetur ridiculus mus. Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum. Sed posuere consectetur est at lobortis. Cras mattis consectetur purus sit amet fermentum.</p>
+            <blockquote>
+              <p>Curabitur blandit tempus porttitor. <strong>Nullam quis risus eget urna mollis</strong> ornare vel eu leo. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
+            </blockquote>
+            <p>Etiam porta <em>sem malesuada magna</em> mollis euismod. Cras mattis consectetur purus sit amet fermentum. Aenean lacinia bibendum nulla sed consectetur.</p>
+            <p>Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+          </div><!-- /.blog-post -->
+
+          <div class="blog-post">
+            <h2 class="blog-post-title">New feature</h2>
+            <p class="blog-post-meta">December 14, 2013 by <a href="#">Chris</a></p>
+
+            <p>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Aenean lacinia bibendum nulla sed consectetur. Etiam porta sem malesuada magna mollis euismod. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
+            <ul>
+              <li>Praesent commodo cursus magna, vel scelerisque nisl consectetur et.</li>
+              <li>Donec id elit non mi porta gravida at eget metus.</li>
+              <li>Nulla vitae elit libero, a pharetra augue.</li>
+            </ul>
+            <p>Etiam porta <em>sem malesuada magna</em> mollis euismod. Cras mattis consectetur purus sit amet fermentum. Aenean lacinia bibendum nulla sed consectetur.</p>
+            <p>Donec ullamcorper nulla non metus auctor fringilla. Nulla vitae elit libero, a pharetra augue.</p>
+          </div><!-- /.blog-post -->
+
+          <nav class="blog-pagination">
+            <a class="btn btn-outline-primary" href="#">Older</a>
+            <a class="btn btn-outline-secondary disabled" href="#">Newer</a>
+          </nav>
+
+        </div><!-- /.blog-main -->
+
+        <aside class="col-md-4 blog-sidebar">
+          <div class="p-3 mb-3 bg-light rounded">
+            <h4 class="font-italic">About</h4>
+            <p class="mb-0">Etiam porta <em>sem malesuada magna</em> mollis euismod. Cras mattis consectetur purus sit amet fermentum. Aenean lacinia bibendum nulla sed consectetur.</p>
+          </div>
+
+          <div class="p-3">
+            <h4 class="font-italic">Archives</h4>
+            <ol class="list-unstyled mb-0">
+              <li><a href="#">March 2014</a></li>
+              <li><a href="#">February 2014</a></li>
+              <li><a href="#">January 2014</a></li>
+              <li><a href="#">December 2013</a></li>
+              <li><a href="#">November 2013</a></li>
+              <li><a href="#">October 2013</a></li>
+              <li><a href="#">September 2013</a></li>
+              <li><a href="#">August 2013</a></li>
+              <li><a href="#">July 2013</a></li>
+              <li><a href="#">June 2013</a></li>
+              <li><a href="#">May 2013</a></li>
+              <li><a href="#">April 2013</a></li>
+            </ol>
+          </div>
+
+          <div class="p-3">
+            <h4 class="font-italic">Elsewhere</h4>
+            <ol class="list-unstyled">
+              <li><a href="#">GitHub</a></li>
+              <li><a href="#">Twitter</a></li>
+              <li><a href="#">Facebook</a></li>
+            </ol>
+          </div>
+        </aside><!-- /.blog-sidebar -->
+
+      </div><!-- /.row -->
+
+    </main><!-- /.container -->
+
+    <footer class="blog-footer">
+      <p>Blog template built for <a href="https://getbootstrap.com/">Bootstrap</a> by <a href="https://twitter.com/mdo">@mdo</a>.</p>
+      <p>
+        <a href="#">Back to top</a>
+      </p>
+    </footer>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <script src="../../assets/js/vendor/holder.min.js"></script>
+    <script>
+      Holder.addTheme('thumb', {
+        bg: '#55595c',
+        fg: '#eceeef',
+        text: 'Thumbnail'
+      });
+    </script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/carousel/carousel.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/carousel/carousel.css
new file mode 100644
index 000000000..f9b5a7e49
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/carousel/carousel.css
@@ -0,0 +1,91 @@
+/* GLOBAL STYLES
+-------------------------------------------------- */
+/* Padding below the footer and lighter body text */
+
+body {
+  padding-top: 3rem;
+  padding-bottom: 3rem;
+  color: #5a5a5a;
+}
+
+
+/* CUSTOMIZE THE CAROUSEL
+-------------------------------------------------- */
+
+/* Carousel base class */
+.carousel {
+  margin-bottom: 4rem;
+}
+/* Since positioning the image, we need to help out the caption */
+.carousel-caption {
+  bottom: 3rem;
+  z-index: 10;
+}
+
+/* Declare heights because of positioning of img element */
+.carousel-item {
+  height: 32rem;
+  background-color: #777;
+}
+.carousel-item > img {
+  position: absolute;
+  top: 0;
+  left: 0;
+  min-width: 100%;
+  height: 32rem;
+}
+
+
+/* MARKETING CONTENT
+-------------------------------------------------- */
+
+/* Center align the text within the three columns below the carousel */
+.marketing .col-lg-4 {
+  margin-bottom: 1.5rem;
+  text-align: center;
+}
+.marketing h2 {
+  font-weight: 400;
+}
+.marketing .col-lg-4 p {
+  margin-right: .75rem;
+  margin-left: .75rem;
+}
+
+
+/* Featurettes
+------------------------- */
+
+.featurette-divider {
+  margin: 5rem 0; /* Space out the Bootstrap <hr> more */
+}
+
+/* Thin out the marketing headings */
+.featurette-heading {
+  font-weight: 300;
+  line-height: 1;
+  letter-spacing: -.05rem;
+}
+
+
+/* RESPONSIVE CSS
+-------------------------------------------------- */
+
+@media (min-width: 40em) {
+  /* Bump up size of carousel content */
+  .carousel-caption p {
+    margin-bottom: 1.25rem;
+    font-size: 1.25rem;
+    line-height: 1.4;
+  }
+
+  .featurette-heading {
+    font-size: 50px;
+  }
+}
+
+@media (min-width: 62em) {
+  .featurette-heading {
+    margin-top: 7rem;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/carousel/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/carousel/index.html
new file mode 100644
index 000000000..bc889dd20
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/carousel/index.html
@@ -0,0 +1,188 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Carousel Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="carousel.css" rel="stylesheet">
+  </head>
+  <body>
+
+    <header>
+      <nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
+        <a class="navbar-brand" href="#">Carousel</a>
+        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
+          <span class="navbar-toggler-icon"></span>
+        </button>
+        <div class="collapse navbar-collapse" id="navbarCollapse">
+          <ul class="navbar-nav mr-auto">
+            <li class="nav-item active">
+              <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link" href="#">Link</a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link disabled" href="#">Disabled</a>
+            </li>
+          </ul>
+          <form class="form-inline mt-2 mt-md-0">
+            <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
+            <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+          </form>
+        </div>
+      </nav>
+    </header>
+
+    <main role="main">
+
+      <div id="myCarousel" class="carousel slide" data-ride="carousel">
+        <ol class="carousel-indicators">
+          <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
+          <li data-target="#myCarousel" data-slide-to="1"></li>
+          <li data-target="#myCarousel" data-slide-to="2"></li>
+        </ol>
+        <div class="carousel-inner">
+          <div class="carousel-item active">
+            <img class="first-slide" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="First slide">
+            <div class="container">
+              <div class="carousel-caption text-left">
+                <h1>Example headline.</h1>
+                <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
+                <p><a class="btn btn-lg btn-primary" href="#" role="button">Sign up today</a></p>
+              </div>
+            </div>
+          </div>
+          <div class="carousel-item">
+            <img class="second-slide" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Second slide">
+            <div class="container">
+              <div class="carousel-caption">
+                <h1>Another example headline.</h1>
+                <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
+                <p><a class="btn btn-lg btn-primary" href="#" role="button">Learn more</a></p>
+              </div>
+            </div>
+          </div>
+          <div class="carousel-item">
+            <img class="third-slide" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Third slide">
+            <div class="container">
+              <div class="carousel-caption text-right">
+                <h1>One more for good measure.</h1>
+                <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
+                <p><a class="btn btn-lg btn-primary" href="#" role="button">Browse gallery</a></p>
+              </div>
+            </div>
+          </div>
+        </div>
+        <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
+          <span class="carousel-control-prev-icon" aria-hidden="true"></span>
+          <span class="sr-only">Previous</span>
+        </a>
+        <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
+          <span class="carousel-control-next-icon" aria-hidden="true"></span>
+          <span class="sr-only">Next</span>
+        </a>
+      </div>
+
+
+      <!-- Marketing messaging and featurettes
+      ================================================== -->
+      <!-- Wrap the rest of the page in another container to center all the content. -->
+
+      <div class="container marketing">
+
+        <!-- Three columns of text below the carousel -->
+        <div class="row">
+          <div class="col-lg-4">
+            <img class="rounded-circle" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Generic placeholder image" width="140" height="140">
+            <h2>Heading</h2>
+            <p>Donec sed odio dui. Etiam porta sem malesuada magna mollis euismod. Nullam id dolor id nibh ultricies vehicula ut id elit. Morbi leo risus, porta ac consectetur ac, vestibulum at eros. Praesent commodo cursus magna.</p>
+            <p><a class="btn btn-secondary" href="#" role="button">View details &raquo;</a></p>
+          </div><!-- /.col-lg-4 -->
+          <div class="col-lg-4">
+            <img class="rounded-circle" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Generic placeholder image" width="140" height="140">
+            <h2>Heading</h2>
+            <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh.</p>
+            <p><a class="btn btn-secondary" href="#" role="button">View details &raquo;</a></p>
+          </div><!-- /.col-lg-4 -->
+          <div class="col-lg-4">
+            <img class="rounded-circle" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Generic placeholder image" width="140" height="140">
+            <h2>Heading</h2>
+            <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
+            <p><a class="btn btn-secondary" href="#" role="button">View details &raquo;</a></p>
+          </div><!-- /.col-lg-4 -->
+        </div><!-- /.row -->
+
+
+        <!-- START THE FEATURETTES -->
+
+        <hr class="featurette-divider">
+
+        <div class="row featurette">
+          <div class="col-md-7">
+            <h2 class="featurette-heading">First featurette heading. <span class="text-muted">It'll blow your mind.</span></h2>
+            <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
+          </div>
+          <div class="col-md-5">
+            <img class="featurette-image img-fluid mx-auto" data-src="holder.js/500x500/auto" alt="Generic placeholder image">
+          </div>
+        </div>
+
+        <hr class="featurette-divider">
+
+        <div class="row featurette">
+          <div class="col-md-7 order-md-2">
+            <h2 class="featurette-heading">Oh yeah, it's that good. <span class="text-muted">See for yourself.</span></h2>
+            <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
+          </div>
+          <div class="col-md-5 order-md-1">
+            <img class="featurette-image img-fluid mx-auto" data-src="holder.js/500x500/auto" alt="Generic placeholder image">
+          </div>
+        </div>
+
+        <hr class="featurette-divider">
+
+        <div class="row featurette">
+          <div class="col-md-7">
+            <h2 class="featurette-heading">And lastly, this one. <span class="text-muted">Checkmate.</span></h2>
+            <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
+          </div>
+          <div class="col-md-5">
+            <img class="featurette-image img-fluid mx-auto" data-src="holder.js/500x500/auto" alt="Generic placeholder image">
+          </div>
+        </div>
+
+        <hr class="featurette-divider">
+
+        <!-- /END THE FEATURETTES -->
+
+      </div><!-- /.container -->
+
+
+      <!-- FOOTER -->
+      <footer class="container">
+        <p class="float-right"><a href="#">Back to top</a></p>
+        <p>&copy; 2017-2018 Company, Inc. &middot; <a href="#">Privacy</a> &middot; <a href="#">Terms</a></p>
+      </footer>
+    </main>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <!-- Just to make our placeholder images work. Don't actually copy the next line! -->
+    <script src="../../assets/js/vendor/holder.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/checkout/form-validation.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/checkout/form-validation.css
new file mode 100644
index 000000000..7a6246fae
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/checkout/form-validation.css
@@ -0,0 +1,5 @@
+.container {
+  max-width: 960px;
+}
+
+.lh-condensed { line-height: 1.25; }
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/checkout/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/checkout/index.html
new file mode 100644
index 000000000..0dda89ef8
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/checkout/index.html
@@ -0,0 +1,268 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Checkout example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="form-validation.css" rel="stylesheet">
+  </head>
+
+  <body class="bg-light">
+
+    <div class="container">
+      <div class="py-5 text-center">
+        <img class="d-block mx-auto mb-4" src="../../assets/brand/bootstrap-solid.svg" alt="" width="72" height="72">
+        <h2>Checkout form</h2>
+        <p class="lead">Below is an example form built entirely with Bootstrap's form controls. Each required form group has a validation state that can be triggered by attempting to submit the form without completing it.</p>
+      </div>
+
+      <div class="row">
+        <div class="col-md-4 order-md-2 mb-4">
+          <h4 class="d-flex justify-content-between align-items-center mb-3">
+            <span class="text-muted">Your cart</span>
+            <span class="badge badge-secondary badge-pill">3</span>
+          </h4>
+          <ul class="list-group mb-3">
+            <li class="list-group-item d-flex justify-content-between lh-condensed">
+              <div>
+                <h6 class="my-0">Product name</h6>
+                <small class="text-muted">Brief description</small>
+              </div>
+              <span class="text-muted">$12</span>
+            </li>
+            <li class="list-group-item d-flex justify-content-between lh-condensed">
+              <div>
+                <h6 class="my-0">Second product</h6>
+                <small class="text-muted">Brief description</small>
+              </div>
+              <span class="text-muted">$8</span>
+            </li>
+            <li class="list-group-item d-flex justify-content-between lh-condensed">
+              <div>
+                <h6 class="my-0">Third item</h6>
+                <small class="text-muted">Brief description</small>
+              </div>
+              <span class="text-muted">$5</span>
+            </li>
+            <li class="list-group-item d-flex justify-content-between bg-light">
+              <div class="text-success">
+                <h6 class="my-0">Promo code</h6>
+                <small>EXAMPLECODE</small>
+              </div>
+              <span class="text-success">-$5</span>
+            </li>
+            <li class="list-group-item d-flex justify-content-between">
+              <span>Total (USD)</span>
+              <strong>$20</strong>
+            </li>
+          </ul>
+
+          <form class="card p-2">
+            <div class="input-group">
+              <input type="text" class="form-control" placeholder="Promo code">
+              <div class="input-group-append">
+                <button type="submit" class="btn btn-secondary">Redeem</button>
+              </div>
+            </div>
+          </form>
+        </div>
+        <div class="col-md-8 order-md-1">
+          <h4 class="mb-3">Billing address</h4>
+          <form class="needs-validation" novalidate>
+            <div class="row">
+              <div class="col-md-6 mb-3">
+                <label for="firstName">First name</label>
+                <input type="text" class="form-control" id="firstName" placeholder="" value="" required>
+                <div class="invalid-feedback">
+                  Valid first name is required.
+                </div>
+              </div>
+              <div class="col-md-6 mb-3">
+                <label for="lastName">Last name</label>
+                <input type="text" class="form-control" id="lastName" placeholder="" value="" required>
+                <div class="invalid-feedback">
+                  Valid last name is required.
+                </div>
+              </div>
+            </div>
+
+            <div class="mb-3">
+              <label for="username">Username</label>
+              <div class="input-group">
+                <div class="input-group-prepend">
+                  <span class="input-group-text">@</span>
+                </div>
+                <input type="text" class="form-control" id="username" placeholder="Username" required>
+                <div class="invalid-feedback" style="width: 100%;">
+                  Your username is required.
+                </div>
+              </div>
+            </div>
+
+            <div class="mb-3">
+              <label for="email">Email <span class="text-muted">(Optional)</span></label>
+              <input type="email" class="form-control" id="email" placeholder="you@example.com">
+              <div class="invalid-feedback">
+                Please enter a valid email address for shipping updates.
+              </div>
+            </div>
+
+            <div class="mb-3">
+              <label for="address">Address</label>
+              <input type="text" class="form-control" id="address" placeholder="1234 Main St" required>
+              <div class="invalid-feedback">
+                Please enter your shipping address.
+              </div>
+            </div>
+
+            <div class="mb-3">
+              <label for="address2">Address 2 <span class="text-muted">(Optional)</span></label>
+              <input type="text" class="form-control" id="address2" placeholder="Apartment or suite">
+            </div>
+
+            <div class="row">
+              <div class="col-md-5 mb-3">
+                <label for="country">Country</label>
+                <select class="custom-select d-block w-100" id="country" required>
+                  <option value="">Choose...</option>
+                  <option>United States</option>
+                </select>
+                <div class="invalid-feedback">
+                  Please select a valid country.
+                </div>
+              </div>
+              <div class="col-md-4 mb-3">
+                <label for="state">State</label>
+                <select class="custom-select d-block w-100" id="state" required>
+                  <option value="">Choose...</option>
+                  <option>California</option>
+                </select>
+                <div class="invalid-feedback">
+                  Please provide a valid state.
+                </div>
+              </div>
+              <div class="col-md-3 mb-3">
+                <label for="zip">Zip</label>
+                <input type="text" class="form-control" id="zip" placeholder="" required>
+                <div class="invalid-feedback">
+                  Zip code required.
+                </div>
+              </div>
+            </div>
+            <hr class="mb-4">
+            <div class="custom-control custom-checkbox">
+              <input type="checkbox" class="custom-control-input" id="same-address">
+              <label class="custom-control-label" for="same-address">Shipping address is the same as my billing address</label>
+            </div>
+            <div class="custom-control custom-checkbox">
+              <input type="checkbox" class="custom-control-input" id="save-info">
+              <label class="custom-control-label" for="save-info">Save this information for next time</label>
+            </div>
+            <hr class="mb-4">
+
+            <h4 class="mb-3">Payment</h4>
+
+            <div class="d-block my-3">
+              <div class="custom-control custom-radio">
+                <input id="credit" name="paymentMethod" type="radio" class="custom-control-input" checked required>
+                <label class="custom-control-label" for="credit">Credit card</label>
+              </div>
+              <div class="custom-control custom-radio">
+                <input id="debit" name="paymentMethod" type="radio" class="custom-control-input" required>
+                <label class="custom-control-label" for="debit">Debit card</label>
+              </div>
+              <div class="custom-control custom-radio">
+                <input id="paypal" name="paymentMethod" type="radio" class="custom-control-input" required>
+                <label class="custom-control-label" for="paypal">PayPal</label>
+              </div>
+            </div>
+            <div class="row">
+              <div class="col-md-6 mb-3">
+                <label for="cc-name">Name on card</label>
+                <input type="text" class="form-control" id="cc-name" placeholder="" required>
+                <small class="text-muted">Full name as displayed on card</small>
+                <div class="invalid-feedback">
+                  Name on card is required
+                </div>
+              </div>
+              <div class="col-md-6 mb-3">
+                <label for="cc-number">Credit card number</label>
+                <input type="text" class="form-control" id="cc-number" placeholder="" required>
+                <div class="invalid-feedback">
+                  Credit card number is required
+                </div>
+              </div>
+            </div>
+            <div class="row">
+              <div class="col-md-3 mb-3">
+                <label for="cc-expiration">Expiration</label>
+                <input type="text" class="form-control" id="cc-expiration" placeholder="" required>
+                <div class="invalid-feedback">
+                  Expiration date required
+                </div>
+              </div>
+              <div class="col-md-3 mb-3">
+                <label for="cc-cvv">CVV</label>
+                <input type="text" class="form-control" id="cc-cvv" placeholder="" required>
+                <div class="invalid-feedback">
+                  Security code required
+                </div>
+              </div>
+            </div>
+            <hr class="mb-4">
+            <button class="btn btn-primary btn-lg btn-block" type="submit">Continue to checkout</button>
+          </form>
+        </div>
+      </div>
+
+      <footer class="my-5 pt-5 text-muted text-center text-small">
+        <p class="mb-1">&copy; 2017-2018 Company Name</p>
+        <ul class="list-inline">
+          <li class="list-inline-item"><a href="#">Privacy</a></li>
+          <li class="list-inline-item"><a href="#">Terms</a></li>
+          <li class="list-inline-item"><a href="#">Support</a></li>
+        </ul>
+      </footer>
+    </div>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <script src="../../assets/js/vendor/holder.min.js"></script>
+    <script>
+      // Example starter JavaScript for disabling form submissions if there are invalid fields
+      (function() {
+        'use strict';
+
+        window.addEventListener('load', function() {
+          // Fetch all the forms we want to apply custom Bootstrap validation styles to
+          var forms = document.getElementsByClassName('needs-validation');
+
+          // Loop over them and prevent submission
+          var validation = Array.prototype.filter.call(forms, function(form) {
+            form.addEventListener('submit', function(event) {
+              if (form.checkValidity() === false) {
+                event.preventDefault();
+                event.stopPropagation();
+              }
+              form.classList.add('was-validated');
+            }, false);
+          });
+        }, false);
+      })();
+    </script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/cover/cover.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/cover/cover.css
new file mode 100644
index 000000000..7c6d33cdd
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/cover/cover.css
@@ -0,0 +1,106 @@
+/*
+ * Globals
+ */
+
+/* Links */
+a,
+a:focus,
+a:hover {
+  color: #fff;
+}
+
+/* Custom default button */
+.btn-secondary,
+.btn-secondary:hover,
+.btn-secondary:focus {
+  color: #333;
+  text-shadow: none; /* Prevent inheritance from `body` */
+  background-color: #fff;
+  border: .05rem solid #fff;
+}
+
+
+/*
+ * Base structure
+ */
+
+html,
+body {
+  height: 100%;
+  background-color: #333;
+}
+
+body {
+  display: -ms-flexbox;
+  display: flex;
+  color: #fff;
+  text-shadow: 0 .05rem .1rem rgba(0, 0, 0, .5);
+  box-shadow: inset 0 0 5rem rgba(0, 0, 0, .5);
+}
+
+.cover-container {
+  max-width: 42em;
+}
+
+
+/*
+ * Header
+ */
+.masthead {
+  margin-bottom: 2rem;
+}
+
+.masthead-brand {
+  margin-bottom: 0;
+}
+
+.nav-masthead .nav-link {
+  padding: .25rem 0;
+  font-weight: 700;
+  color: rgba(255, 255, 255, .5);
+  background-color: transparent;
+  border-bottom: .25rem solid transparent;
+}
+
+.nav-masthead .nav-link:hover,
+.nav-masthead .nav-link:focus {
+  border-bottom-color: rgba(255, 255, 255, .25);
+}
+
+.nav-masthead .nav-link + .nav-link {
+  margin-left: 1rem;
+}
+
+.nav-masthead .active {
+  color: #fff;
+  border-bottom-color: #fff;
+}
+
+@media (min-width: 48em) {
+  .masthead-brand {
+    float: left;
+  }
+  .nav-masthead {
+    float: right;
+  }
+}
+
+
+/*
+ * Cover
+ */
+.cover {
+  padding: 0 1.5rem;
+}
+.cover .btn-lg {
+  padding: .75rem 1.25rem;
+  font-weight: 700;
+}
+
+
+/*
+ * Footer
+ */
+.mastfoot {
+  color: rgba(255, 255, 255, .5);
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/cover/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/cover/index.html
new file mode 100644
index 000000000..f4281c7cf
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/cover/index.html
@@ -0,0 +1,57 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Cover Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="cover.css" rel="stylesheet">
+  </head>
+
+  <body class="text-center">
+
+    <div class="cover-container d-flex w-100 h-100 p-3 mx-auto flex-column">
+      <header class="masthead mb-auto">
+        <div class="inner">
+          <h3 class="masthead-brand">Cover</h3>
+          <nav class="nav nav-masthead justify-content-center">
+            <a class="nav-link active" href="#">Home</a>
+            <a class="nav-link" href="#">Features</a>
+            <a class="nav-link" href="#">Contact</a>
+          </nav>
+        </div>
+      </header>
+
+      <main role="main" class="inner cover">
+        <h1 class="cover-heading">Cover your page.</h1>
+        <p class="lead">Cover is a one-page template for building simple and beautiful home pages. Download, edit the text, and add your own fullscreen background photo to make it your own.</p>
+        <p class="lead">
+          <a href="#" class="btn btn-lg btn-secondary">Learn more</a>
+        </p>
+      </main>
+
+      <footer class="mastfoot mt-auto">
+        <div class="inner">
+          <p>Cover template for <a href="https://getbootstrap.com/">Bootstrap</a>, by <a href="https://twitter.com/mdo">@mdo</a>.</p>
+        </div>
+      </footer>
+    </div>
+
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/dashboard/dashboard.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/dashboard/dashboard.css
new file mode 100644
index 000000000..eb3bb8540
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/dashboard/dashboard.css
@@ -0,0 +1,100 @@
+body {
+  font-size: .875rem;
+}
+
+.feather {
+  width: 16px;
+  height: 16px;
+  vertical-align: text-bottom;
+}
+
+/*
+ * Sidebar
+ */
+
+.sidebar {
+  position: fixed;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  z-index: 100; /* Behind the navbar */
+  padding: 48px 0 0; /* Height of navbar */
+  box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
+}
+
+.sidebar-sticky {
+  position: relative;
+  top: 0;
+  height: calc(100vh - 48px);
+  padding-top: .5rem;
+  overflow-x: hidden;
+  overflow-y: auto; /* Scrollable contents if viewport is shorter than content. */
+}
+
+@supports ((position: -webkit-sticky) or (position: sticky)) {
+  .sidebar-sticky {
+    position: -webkit-sticky;
+    position: sticky;
+  }
+}
+
+.sidebar .nav-link {
+  font-weight: 500;
+  color: #333;
+}
+
+.sidebar .nav-link .feather {
+  margin-right: 4px;
+  color: #999;
+}
+
+.sidebar .nav-link.active {
+  color: #007bff;
+}
+
+.sidebar .nav-link:hover .feather,
+.sidebar .nav-link.active .feather {
+  color: inherit;
+}
+
+.sidebar-heading {
+  font-size: .75rem;
+  text-transform: uppercase;
+}
+
+/*
+ * Content
+ */
+
+[role="main"] {
+  padding-top: 48px; /* Space for fixed navbar */
+}
+
+/*
+ * Navbar
+ */
+
+.navbar-brand {
+  padding-top: .75rem;
+  padding-bottom: .75rem;
+  font-size: 1rem;
+  background-color: rgba(0, 0, 0, .25);
+  box-shadow: inset -1px 0 0 rgba(0, 0, 0, .25);
+}
+
+.navbar .form-control {
+  padding: .75rem 1rem;
+  border-width: 0;
+  border-radius: 0;
+}
+
+.form-control-dark {
+  color: #fff;
+  background-color: rgba(255, 255, 255, .1);
+  border-color: rgba(255, 255, 255, .1);
+}
+
+.form-control-dark:focus {
+  border-color: transparent;
+  box-shadow: 0 0 0 3px rgba(255, 255, 255, .25);
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/dashboard/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/dashboard/index.html
new file mode 100644
index 000000000..f66c4505d
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/dashboard/index.html
@@ -0,0 +1,303 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Dashboard Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="dashboard.css" rel="stylesheet">
+  </head>
+
+  <body>
+    <nav class="navbar navbar-dark fixed-top bg-dark flex-md-nowrap p-0 shadow">
+      <a class="navbar-brand col-sm-3 col-md-2 mr-0" href="#">Company name</a>
+      <input class="form-control form-control-dark w-100" type="text" placeholder="Search" aria-label="Search">
+      <ul class="navbar-nav px-3">
+        <li class="nav-item text-nowrap">
+          <a class="nav-link" href="#">Sign out</a>
+        </li>
+      </ul>
+    </nav>
+
+    <div class="container-fluid">
+      <div class="row">
+        <nav class="col-md-2 d-none d-md-block bg-light sidebar">
+          <div class="sidebar-sticky">
+            <ul class="nav flex-column">
+              <li class="nav-item">
+                <a class="nav-link active" href="#">
+                  <span data-feather="home"></span>
+                  Dashboard <span class="sr-only">(current)</span>
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="file"></span>
+                  Orders
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="shopping-cart"></span>
+                  Products
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="users"></span>
+                  Customers
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="bar-chart-2"></span>
+                  Reports
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="layers"></span>
+                  Integrations
+                </a>
+              </li>
+            </ul>
+
+            <h6 class="sidebar-heading d-flex justify-content-between align-items-center px-3 mt-4 mb-1 text-muted">
+              <span>Saved reports</span>
+              <a class="d-flex align-items-center text-muted" href="#">
+                <span data-feather="plus-circle"></span>
+              </a>
+            </h6>
+            <ul class="nav flex-column mb-2">
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="file-text"></span>
+                  Current month
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="file-text"></span>
+                  Last quarter
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="file-text"></span>
+                  Social engagement
+                </a>
+              </li>
+              <li class="nav-item">
+                <a class="nav-link" href="#">
+                  <span data-feather="file-text"></span>
+                  Year-end sale
+                </a>
+              </li>
+            </ul>
+          </div>
+        </nav>
+
+        <main role="main" class="col-md-9 ml-sm-auto col-lg-10 px-4">
+          <div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
+            <h1 class="h2">Dashboard</h1>
+            <div class="btn-toolbar mb-2 mb-md-0">
+              <div class="btn-group mr-2">
+                <button class="btn btn-sm btn-outline-secondary">Share</button>
+                <button class="btn btn-sm btn-outline-secondary">Export</button>
+              </div>
+              <button class="btn btn-sm btn-outline-secondary dropdown-toggle">
+                <span data-feather="calendar"></span>
+                This week
+              </button>
+            </div>
+          </div>
+
+          <canvas class="my-4 w-100" id="myChart" width="900" height="380"></canvas>
+
+          <h2>Section title</h2>
+          <div class="table-responsive">
+            <table class="table table-striped table-sm">
+              <thead>
+                <tr>
+                  <th>#</th>
+                  <th>Header</th>
+                  <th>Header</th>
+                  <th>Header</th>
+                  <th>Header</th>
+                </tr>
+              </thead>
+              <tbody>
+                <tr>
+                  <td>1,001</td>
+                  <td>Lorem</td>
+                  <td>ipsum</td>
+                  <td>dolor</td>
+                  <td>sit</td>
+                </tr>
+                <tr>
+                  <td>1,002</td>
+                  <td>amet</td>
+                  <td>consectetur</td>
+                  <td>adipiscing</td>
+                  <td>elit</td>
+                </tr>
+                <tr>
+                  <td>1,003</td>
+                  <td>Integer</td>
+                  <td>nec</td>
+                  <td>odio</td>
+                  <td>Praesent</td>
+                </tr>
+                <tr>
+                  <td>1,003</td>
+                  <td>libero</td>
+                  <td>Sed</td>
+                  <td>cursus</td>
+                  <td>ante</td>
+                </tr>
+                <tr>
+                  <td>1,004</td>
+                  <td>dapibus</td>
+                  <td>diam</td>
+                  <td>Sed</td>
+                  <td>nisi</td>
+                </tr>
+                <tr>
+                  <td>1,005</td>
+                  <td>Nulla</td>
+                  <td>quis</td>
+                  <td>sem</td>
+                  <td>at</td>
+                </tr>
+                <tr>
+                  <td>1,006</td>
+                  <td>nibh</td>
+                  <td>elementum</td>
+                  <td>imperdiet</td>
+                  <td>Duis</td>
+                </tr>
+                <tr>
+                  <td>1,007</td>
+                  <td>sagittis</td>
+                  <td>ipsum</td>
+                  <td>Praesent</td>
+                  <td>mauris</td>
+                </tr>
+                <tr>
+                  <td>1,008</td>
+                  <td>Fusce</td>
+                  <td>nec</td>
+                  <td>tellus</td>
+                  <td>sed</td>
+                </tr>
+                <tr>
+                  <td>1,009</td>
+                  <td>augue</td>
+                  <td>semper</td>
+                  <td>porta</td>
+                  <td>Mauris</td>
+                </tr>
+                <tr>
+                  <td>1,010</td>
+                  <td>massa</td>
+                  <td>Vestibulum</td>
+                  <td>lacinia</td>
+                  <td>arcu</td>
+                </tr>
+                <tr>
+                  <td>1,011</td>
+                  <td>eget</td>
+                  <td>nulla</td>
+                  <td>Class</td>
+                  <td>aptent</td>
+                </tr>
+                <tr>
+                  <td>1,012</td>
+                  <td>taciti</td>
+                  <td>sociosqu</td>
+                  <td>ad</td>
+                  <td>litora</td>
+                </tr>
+                <tr>
+                  <td>1,013</td>
+                  <td>torquent</td>
+                  <td>per</td>
+                  <td>conubia</td>
+                  <td>nostra</td>
+                </tr>
+                <tr>
+                  <td>1,014</td>
+                  <td>per</td>
+                  <td>inceptos</td>
+                  <td>himenaeos</td>
+                  <td>Curabitur</td>
+                </tr>
+                <tr>
+                  <td>1,015</td>
+                  <td>sodales</td>
+                  <td>ligula</td>
+                  <td>in</td>
+                  <td>libero</td>
+                </tr>
+              </tbody>
+            </table>
+          </div>
+        </main>
+      </div>
+    </div>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+
+    <!-- Icons -->
+    <script src="https://unpkg.com/feather-icons/dist/feather.min.js"></script>
+    <script>
+      feather.replace()
+    </script>
+
+    <!-- Graphs -->
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.1/Chart.min.js"></script>
+    <script>
+      var ctx = document.getElementById("myChart");
+      var myChart = new Chart(ctx, {
+        type: 'line',
+        data: {
+          labels: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
+          datasets: [{
+            data: [15339, 21345, 18483, 24003, 23489, 24092, 12034],
+            lineTension: 0,
+            backgroundColor: 'transparent',
+            borderColor: '#007bff',
+            borderWidth: 4,
+            pointBackgroundColor: '#007bff'
+          }]
+        },
+        options: {
+          scales: {
+            yAxes: [{
+              ticks: {
+                beginAtZero: false
+              }
+            }]
+          },
+          legend: {
+            display: false,
+          }
+        }
+      });
+    </script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/floating-labels/floating-labels.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/floating-labels/floating-labels.css
new file mode 100644
index 000000000..7b5a7d2e3
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/floating-labels/floating-labels.css
@@ -0,0 +1,105 @@
+:root {
+  --input-padding-x: .75rem;
+  --input-padding-y: .75rem;
+}
+
+html,
+body {
+  height: 100%;
+}
+
+body {
+  display: -ms-flexbox;
+  display: flex;
+  -ms-flex-align: center;
+  align-items: center;
+  padding-top: 40px;
+  padding-bottom: 40px;
+  background-color: #f5f5f5;
+}
+
+.form-signin {
+  width: 100%;
+  max-width: 420px;
+  padding: 15px;
+  margin: auto;
+}
+
+.form-label-group {
+  position: relative;
+  margin-bottom: 1rem;
+}
+
+.form-label-group > input,
+.form-label-group > label {
+  padding: var(--input-padding-y) var(--input-padding-x);
+}
+
+.form-label-group > label {
+  position: absolute;
+  top: 0;
+  left: 0;
+  display: block;
+  width: 100%;
+  margin-bottom: 0; /* Override default `<label>` margin */
+  line-height: 1.5;
+  color: #495057;
+  cursor: text; /* Match the input under the label */
+  border: 1px solid transparent;
+  border-radius: .25rem;
+  transition: all .1s ease-in-out;
+}
+
+.form-label-group input::-webkit-input-placeholder {
+  color: transparent;
+}
+
+.form-label-group input:-ms-input-placeholder {
+  color: transparent;
+}
+
+.form-label-group input::-ms-input-placeholder {
+  color: transparent;
+}
+
+.form-label-group input::-moz-placeholder {
+  color: transparent;
+}
+
+.form-label-group input::placeholder {
+  color: transparent;
+}
+
+.form-label-group input:not(:placeholder-shown) {
+  padding-top: calc(var(--input-padding-y) + var(--input-padding-y) * (2 / 3));
+  padding-bottom: calc(var(--input-padding-y) / 3);
+}
+
+.form-label-group input:not(:placeholder-shown) ~ label {
+  padding-top: calc(var(--input-padding-y) / 3);
+  padding-bottom: calc(var(--input-padding-y) / 3);
+  font-size: 12px;
+  color: #777;
+}
+
+/* Fallback for Edge
+-------------------------------------------------- */
+@supports (-ms-ime-align: auto) {
+  .form-label-group > label {
+    display: none;
+  }
+  .form-label-group input::-ms-input-placeholder {
+    color: #777;
+  }
+}
+
+/* Fallback for IE
+-------------------------------------------------- */
+@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
+  .form-label-group > label {
+    display: none;
+  }
+  .form-label-group input:-ms-input-placeholder {
+    color: #777;
+  }
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/floating-labels/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/floating-labels/index.html
new file mode 100644
index 000000000..48dc09db1
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/floating-labels/index.html
@@ -0,0 +1,46 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Floating labels example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="floating-labels.css" rel="stylesheet">
+  </head>
+
+  <body>
+    <form class="form-signin">
+      <div class="text-center mb-4">
+        <img class="mb-4" src="../../assets/brand/bootstrap-solid.svg" alt="" width="72" height="72">
+        <h1 class="h3 mb-3 font-weight-normal">Floating labels</h1>
+        <p>Build form controls with floating labels via the <code>:placeholder-shown</code> pseudo-element. <a href="https://caniuse.com/#feat=css-placeholder-shown">Works in latest Chrome, Safari, and Firefox.</a></p>
+      </div>
+
+      <div class="form-label-group">
+        <input type="email" id="inputEmail" class="form-control" placeholder="Email address" required autofocus>
+        <label for="inputEmail">Email address</label>
+      </div>
+
+      <div class="form-label-group">
+        <input type="password" id="inputPassword" class="form-control" placeholder="Password" required>
+        <label for="inputPassword">Password</label>
+      </div>
+
+      <div class="checkbox mb-3">
+        <label>
+          <input type="checkbox" value="remember-me"> Remember me
+        </label>
+      </div>
+      <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
+      <p class="mt-5 mb-3 text-muted text-center">&copy; 2017-2018</p>
+    </form>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/grid/grid.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/grid/grid.css
new file mode 100644
index 000000000..78f5dfda6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/grid/grid.css
@@ -0,0 +1,27 @@
+body {
+  padding-top: 2rem;
+  padding-bottom: 2rem;
+}
+
+h3 {
+  margin-top: 2rem;
+}
+
+.row {
+  margin-bottom: 1rem;
+}
+.row .row {
+  margin-top: 1rem;
+  margin-bottom: 0;
+}
+[class*="col-"] {
+  padding-top: 1rem;
+  padding-bottom: 1rem;
+  background-color: rgba(86, 61, 124, .15);
+  border: 1px solid rgba(86, 61, 124, .2);
+}
+
+hr {
+  margin-top: 2rem;
+  margin-bottom: 2rem;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/grid/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/grid/index.html
new file mode 100644
index 000000000..8ef2c72a0
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/grid/index.html
@@ -0,0 +1,135 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Grid Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="grid.css" rel="stylesheet">
+  </head>
+
+  <body>
+    <div class="container">
+
+      <h1>Bootstrap grid examples</h1>
+      <p class="lead">Basic grid layouts to get you familiar with building within the Bootstrap grid system.</p>
+
+      <h2>Five grid tiers</h2>
+      <p>There are five tiers to the Bootstrap grid system, one for each range of devices we support. Each tier starts at a minimum viewport size and automatically applies to the larger devices unless overridden.</p>
+
+      <div class="row">
+        <div class="col-4">.col-4</div>
+        <div class="col-4">.col-4</div>
+        <div class="col-4">.col-4</div>
+      </div>
+
+      <div class="row">
+        <div class="col-sm-4">.col-sm-4</div>
+        <div class="col-sm-4">.col-sm-4</div>
+        <div class="col-sm-4">.col-sm-4</div>
+      </div>
+
+      <div class="row">
+        <div class="col-md-4">.col-md-4</div>
+        <div class="col-md-4">.col-md-4</div>
+        <div class="col-md-4">.col-md-4</div>
+      </div>
+
+      <div class="row">
+        <div class="col-lg-4">.col-lg-4</div>
+        <div class="col-lg-4">.col-lg-4</div>
+        <div class="col-lg-4">.col-lg-4</div>
+      </div>
+
+      <div class="row">
+        <div class="col-xl-4">.col-xl-4</div>
+        <div class="col-xl-4">.col-xl-4</div>
+        <div class="col-xl-4">.col-xl-4</div>
+      </div>
+
+      <h2>Three equal columns</h2>
+      <p>Get three equal-width columns <strong>starting at desktops and scaling to large desktops</strong>. On mobile devices, tablets and below, the columns will automatically stack.</p>
+      <div class="row">
+        <div class="col-md-4">.col-md-4</div>
+        <div class="col-md-4">.col-md-4</div>
+        <div class="col-md-4">.col-md-4</div>
+      </div>
+
+      <h2>Three unequal columns</h2>
+      <p>Get three columns <strong>starting at desktops and scaling to large desktops</strong> of various widths. Remember, grid columns should add up to twelve for a single horizontal block. More than that, and columns start stacking no matter the viewport.</p>
+      <div class="row">
+        <div class="col-md-3">.col-md-3</div>
+        <div class="col-md-6">.col-md-6</div>
+        <div class="col-md-3">.col-md-3</div>
+      </div>
+
+      <h2>Two columns</h2>
+      <p>Get two columns <strong>starting at desktops and scaling to large desktops</strong>.</p>
+      <div class="row">
+        <div class="col-md-8">.col-md-8</div>
+        <div class="col-md-4">.col-md-4</div>
+      </div>
+
+      <h2>Full width, single column</h2>
+      <p class="text-warning">No grid classes are necessary for full-width elements.</p>
+
+      <hr>
+
+      <h2>Two columns with two nested columns</h2>
+      <p>Per the documentation, nesting is easy—just put a row of columns within an existing column. This gives you two columns <strong>starting at desktops and scaling to large desktops</strong>, with another two (equal widths) within the larger column.</p>
+      <p>At mobile device sizes, tablets and down, these columns and their nested columns will stack.</p>
+      <div class="row">
+        <div class="col-md-8">
+          .col-md-8
+          <div class="row">
+            <div class="col-md-6">.col-md-6</div>
+            <div class="col-md-6">.col-md-6</div>
+          </div>
+        </div>
+        <div class="col-md-4">.col-md-4</div>
+      </div>
+
+      <hr>
+
+      <h2>Mixed: mobile and desktop</h2>
+      <p>The Bootstrap v4 grid system has five tiers of classes: xs (extra small), sm (small), md (medium), lg (large), and xl (extra large). You can use nearly any combination of these classes to create more dynamic and flexible layouts.</p>
+      <p>Each tier of classes scales up, meaning if you plan on setting the same widths for xs and sm, you only need to specify xs.</p>
+      <div class="row">
+        <div class="col-12 col-md-8">.col-12 .col-md-8</div>
+        <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+      </div>
+      <div class="row">
+        <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+        <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+        <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+      </div>
+      <div class="row">
+        <div class="col-6">.col-6</div>
+        <div class="col-6">.col-6</div>
+      </div>
+
+      <hr>
+
+      <h2>Mixed: mobile, tablet, and desktop</h2>
+      <p></p>
+      <div class="row">
+        <div class="col-12 col-sm-6 col-lg-8">.col-12 .col-sm-6 .col-lg-8</div>
+        <div class="col-6 col-lg-4">.col-6 .col-lg-4</div>
+      </div>
+      <div class="row">
+        <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
+        <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
+        <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
+      </div>
+
+    </div> <!-- /container -->
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/index.html
new file mode 100644
index 000000000..3bb984382
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/index.html
@@ -0,0 +1,22 @@
+---
+layout: examples
+title: Examples
+description: Quickly get a project started with any of our examples ranging from using parts of the framework to custom components and layouts.
+redirect_from: "/examples/"
+---
+
+{% for entry in site.data.examples %}
+  <h2>{{ entry.category | capitalize }}</h2>
+  <p>{{ entry.description }}</p>
+  {% for example in entry.examples %}
+    {% if forloop.first %}<div class="row">{% endif %}
+      <div class="col-sm-6 col-md-4 col-xl-3 mb-3">
+        <a href="{{ site.baseurl }}/docs/{{ site.docs_version }}/examples/{{ example.name | slugify }}/">
+          <img class="img-thumbnail mb-3" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/examples/screenshots/{{ example.name | slugify }}.png" alt="{{ example.name }} screenshot" width="960" height="600">
+          <h5 class="mb-1">{{ example.name }}</h5>
+        </a>
+        <p class="text-muted">{{ example.description }}</p>
+      </div>
+    {% if forloop.last %}</div>{% endif %}
+  {% endfor %}
+{% endfor %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/jumbotron/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/jumbotron/index.html
new file mode 100644
index 000000000..03a2875da
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/jumbotron/index.html
@@ -0,0 +1,103 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Jumbotron Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="jumbotron.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
+      <a class="navbar-brand" href="#">Navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExampleDefault">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown01">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-lg-0">
+          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
+    </nav>
+
+    <main role="main">
+
+      <!-- Main jumbotron for a primary marketing message or call to action -->
+      <div class="jumbotron">
+        <div class="container">
+          <h1 class="display-3">Hello, world!</h1>
+          <p>This is a template for a simple marketing or informational website. It includes a large callout called a jumbotron and three supporting pieces of content. Use it as a starting point to create something more unique.</p>
+          <p><a class="btn btn-primary btn-lg" href="#" role="button">Learn more &raquo;</a></p>
+        </div>
+      </div>
+
+      <div class="container">
+        <!-- Example row of columns -->
+        <div class="row">
+          <div class="col-md-4">
+            <h2>Heading</h2>
+            <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
+            <p><a class="btn btn-secondary" href="#" role="button">View details &raquo;</a></p>
+          </div>
+          <div class="col-md-4">
+            <h2>Heading</h2>
+            <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
+            <p><a class="btn btn-secondary" href="#" role="button">View details &raquo;</a></p>
+          </div>
+          <div class="col-md-4">
+            <h2>Heading</h2>
+            <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
+            <p><a class="btn btn-secondary" href="#" role="button">View details &raquo;</a></p>
+          </div>
+        </div>
+
+        <hr>
+
+      </div> <!-- /container -->
+
+    </main>
+
+    <footer class="container">
+      <p>&copy; Company 2017-2018</p>
+    </footer>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/jumbotron/jumbotron.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/jumbotron/jumbotron.css
new file mode 100644
index 000000000..d751264ef
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/jumbotron/jumbotron.css
@@ -0,0 +1,4 @@
+/* Move down content because we have a fixed navbar that is 3.5rem tall */
+body {
+  padding-top: 3.5rem;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-bottom/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-bottom/index.html
new file mode 100644
index 000000000..bc0f63e64
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-bottom/index.html
@@ -0,0 +1,60 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Bottom navbar example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+  </head>
+
+  <body>
+    <div class="container">
+      <div class="jumbotron mt-3">
+        <h1>Bottom Navbar example</h1>
+        <p class="lead">This example is a quick exercise to illustrate how the bottom navbar works.</p>
+        <a class="btn btn-lg btn-primary" href="../../components/navbar/" role="button">View navbar docs &raquo;</a>
+      </div>
+    </div>
+    <nav class="navbar fixed-bottom navbar-expand-sm navbar-dark bg-dark">
+      <a class="navbar-brand" href="#">Bottom navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+      <div class="collapse navbar-collapse" id="navbarCollapse">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropup">
+            <a class="nav-link dropdown-toggle" href="https://getbootstrap.com" id="dropdown10" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropup</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown10">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+      </div>
+    </nav>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-fixed/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-fixed/index.html
new file mode 100644
index 000000000..10dc37d93
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-fixed/index.html
@@ -0,0 +1,61 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Fixed top navbar example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="navbar-top-fixed.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
+      <a class="navbar-brand" href="#">Fixed navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+      <div class="collapse navbar-collapse" id="navbarCollapse">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+        </ul>
+        <form class="form-inline mt-2 mt-md-0">
+          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
+    </nav>
+
+    <main role="main" class="container">
+      <div class="jumbotron">
+        <h1>Navbar example</h1>
+        <p class="lead">This example is a quick exercise to illustrate how fixed to top navbar works. As you scroll, it will remain fixed to the top of your browser's viewport.</p>
+        <a class="btn btn-lg btn-primary" href="../../components/navbar/" role="button">View navbar docs &raquo;</a>
+      </div>
+    </main>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-fixed/navbar-top-fixed.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-fixed/navbar-top-fixed.css
new file mode 100644
index 000000000..c77c0c147
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-fixed/navbar-top-fixed.css
@@ -0,0 +1,5 @@
+/* Show it is fixed to the top */
+body {
+  min-height: 75rem;
+  padding-top: 4.5rem;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-static/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-static/index.html
new file mode 100644
index 000000000..c654bca51
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-static/index.html
@@ -0,0 +1,61 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Top navbar example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="navbar-top.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <nav class="navbar navbar-expand-md navbar-dark bg-dark mb-4">
+      <a class="navbar-brand" href="#">Top navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+      <div class="collapse navbar-collapse" id="navbarCollapse">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+        </ul>
+        <form class="form-inline mt-2 mt-md-0">
+          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
+    </nav>
+
+    <main role="main" class="container">
+      <div class="jumbotron">
+        <h1>Navbar example</h1>
+        <p class="lead">This example is a quick exercise to illustrate how the top-aligned navbar works. As you scroll, this navbar remains in its original position and moves with the rest of the page.</p>
+        <a class="btn btn-lg btn-primary" href="../../components/navbar/" role="button">View navbar docs &raquo;</a>
+      </div>
+    </main>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-static/navbar-top.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-static/navbar-top.css
new file mode 100644
index 000000000..25bbdde09
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbar-static/navbar-top.css
@@ -0,0 +1,4 @@
+/* Show it's not fixed to the top */
+body {
+  min-height: 75rem;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/navbars/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbars/index.html
new file mode 100644
index 000000000..9abe51085
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbars/index.html
@@ -0,0 +1,347 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Navbar Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="navbar.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <nav class="navbar navbar-dark bg-dark">
+      <a class="navbar-brand" href="#">Never expand</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample01" aria-controls="navbarsExample01" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExample01">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown01">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-md-0">
+          <input class="form-control" type="text" placeholder="Search" aria-label="Search">
+        </form>
+      </div>
+    </nav>
+
+    <nav class="navbar navbar-expand navbar-dark bg-dark">
+      <a class="navbar-brand" href="#">Always expand</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample02" aria-controls="navbarsExample02" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExample02">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-md-0">
+          <input class="form-control" type="text" placeholder="Search">
+        </form>
+      </div>
+    </nav>
+
+    <nav class="navbar navbar-expand-sm navbar-dark bg-dark">
+      <a class="navbar-brand" href="#">Expand at sm</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample03" aria-controls="navbarsExample03" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExample03">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown03" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown03">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-md-0">
+          <input class="form-control" type="text" placeholder="Search">
+        </form>
+      </div>
+    </nav>
+
+    <nav class="navbar navbar-expand-md navbar-dark bg-dark">
+      <a class="navbar-brand" href="#">Expand at md</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample04" aria-controls="navbarsExample04" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExample04">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown04" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown04">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-md-0">
+          <input class="form-control" type="text" placeholder="Search">
+        </form>
+      </div>
+    </nav>
+
+    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+      <a class="navbar-brand" href="#">Expand at lg</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample05" aria-controls="navbarsExample05" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExample05">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown05" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown05">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-md-0">
+          <input class="form-control" type="text" placeholder="Search">
+        </form>
+      </div>
+    </nav>
+
+    <nav class="navbar navbar-expand-xl navbar-dark bg-dark">
+      <a class="navbar-brand" href="#">Expand at xl</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample06" aria-controls="navbarsExample06" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExample06">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown06" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown06">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-md-0">
+          <input class="form-control" type="text" placeholder="Search">
+        </form>
+      </div>
+    </nav>
+
+    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+      <div class="container">
+        <a class="navbar-brand" href="#">Container</a>
+        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample07" aria-controls="navbarsExample07" aria-expanded="false" aria-label="Toggle navigation">
+          <span class="navbar-toggler-icon"></span>
+        </button>
+
+        <div class="collapse navbar-collapse" id="navbarsExample07">
+          <ul class="navbar-nav mr-auto">
+            <li class="nav-item active">
+              <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link" href="#">Link</a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link disabled" href="#">Disabled</a>
+            </li>
+            <li class="nav-item dropdown">
+              <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown07" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+              <div class="dropdown-menu" aria-labelledby="dropdown07">
+                <a class="dropdown-item" href="#">Action</a>
+                <a class="dropdown-item" href="#">Another action</a>
+                <a class="dropdown-item" href="#">Something else here</a>
+              </div>
+            </li>
+          </ul>
+          <form class="form-inline my-2 my-md-0">
+            <input class="form-control" type="text" placeholder="Search" aria-label="Search">
+          </form>
+        </div>
+      </div>
+    </nav>
+
+    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample08" aria-controls="navbarsExample08" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse justify-content-md-center" id="navbarsExample08">
+        <ul class="navbar-nav">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Centered nav only <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown08" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown08">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+      </div>
+    </nav>
+
+    <div class="container">
+      <nav class="navbar navbar-expand-lg navbar-light bg-light rounded">
+        <a class="navbar-brand" href="#">Navbar</a>
+        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample09" aria-controls="navbarsExample09" aria-expanded="false" aria-label="Toggle navigation">
+          <span class="navbar-toggler-icon"></span>
+        </button>
+
+        <div class="collapse navbar-collapse" id="navbarsExample09">
+          <ul class="navbar-nav mr-auto">
+            <li class="nav-item active">
+              <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link" href="#">Link</a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link disabled" href="#">Disabled</a>
+            </li>
+            <li class="nav-item dropdown">
+              <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown09" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+              <div class="dropdown-menu" aria-labelledby="dropdown09">
+                <a class="dropdown-item" href="#">Action</a>
+                <a class="dropdown-item" href="#">Another action</a>
+                <a class="dropdown-item" href="#">Something else here</a>
+              </div>
+            </li>
+          </ul>
+          <form class="form-inline my-2 my-md-0">
+            <input class="form-control" type="text" placeholder="Search" aria-label="Search">
+          </form>
+        </div>
+      </nav>
+
+      <nav class="navbar navbar-expand-lg navbar-light bg-light rounded">
+        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample10" aria-controls="navbarsExample10" aria-expanded="false" aria-label="Toggle navigation">
+          <span class="navbar-toggler-icon"></span>
+        </button>
+
+        <div class="collapse navbar-collapse justify-content-md-center" id="navbarsExample10">
+          <ul class="navbar-nav">
+            <li class="nav-item active">
+              <a class="nav-link" href="#">Centered nav only <span class="sr-only">(current)</span></a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link" href="#">Link</a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link disabled" href="#">Disabled</a>
+            </li>
+            <li class="nav-item dropdown">
+              <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown10" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+              <div class="dropdown-menu" aria-labelledby="dropdown10">
+                <a class="dropdown-item" href="#">Action</a>
+                <a class="dropdown-item" href="#">Another action</a>
+                <a class="dropdown-item" href="#">Something else here</a>
+              </div>
+            </li>
+          </ul>
+        </div>
+      </nav>
+
+      <main role="main">
+        <div class="jumbotron">
+          <div class="col-sm-8 mx-auto">
+            <h1>Navbar examples</h1>
+            <p>This example is a quick exercise to illustrate how the navbar and its contents work. Some navbars extend the width of the viewport, others are confined within a <code>.container</code>. For positioning of navbars, checkout the <a href="../navbar-static/">top</a> and <a href="../navbar-fixed/">fixed top</a> examples.</p>
+            <p>At the smallest breakpoint, the collapse plugin is used to hide the links and show a menu button to toggle the collapsed content.</p>
+            <p>
+              <a class="btn btn-primary" href="../../components/navbar/" role="button">View navbar docs &raquo;</a>
+            </p>
+          </div>
+        </div>
+      </main>
+    </div>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/navbars/navbar.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbars/navbar.css
new file mode 100644
index 000000000..70d209409
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/navbars/navbar.css
@@ -0,0 +1,7 @@
+body {
+  padding-bottom: 20px;
+}
+
+.navbar {
+  margin-bottom: 20px;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/index.html
new file mode 100644
index 000000000..7dae17a8a
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/index.html
@@ -0,0 +1,159 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Offcanvas template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="offcanvas.css" rel="stylesheet">
+  </head>
+
+  <body class="bg-light">
+
+    <nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-dark">
+      <a class="navbar-brand mr-auto mr-lg-0" href="#">Offcanvas navbar</a>
+      <button class="navbar-toggler p-0 border-0" type="button" data-toggle="offcanvas">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="navbar-collapse offcanvas-collapse" id="navbarsExampleDefault">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Dashboard <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Notifications</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Profile</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Switch account</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Settings</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown01">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-lg-0">
+          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
+    </nav>
+
+    <div class="nav-scroller bg-white shadow-sm">
+      <nav class="nav nav-underline">
+        <a class="nav-link active" href="#">Dashboard</a>
+        <a class="nav-link" href="#">
+          Friends
+          <span class="badge badge-pill bg-light align-text-bottom">27</span>
+        </a>
+        <a class="nav-link" href="#">Explore</a>
+        <a class="nav-link" href="#">Suggestions</a>
+        <a class="nav-link" href="#">Link</a>
+        <a class="nav-link" href="#">Link</a>
+        <a class="nav-link" href="#">Link</a>
+        <a class="nav-link" href="#">Link</a>
+        <a class="nav-link" href="#">Link</a>
+      </nav>
+    </div>
+
+    <main role="main" class="container">
+      <div class="d-flex align-items-center p-3 my-3 text-white-50 bg-purple rounded shadow-sm">
+        <img class="mr-3" src="../../assets/brand/bootstrap-outline.svg" alt="" width="48" height="48">
+        <div class="lh-100">
+          <h6 class="mb-0 text-white lh-100">Bootstrap</h6>
+          <small>Since 2011</small>
+        </div>
+      </div>
+
+      <div class="my-3 p-3 bg-white rounded shadow-sm">
+        <h6 class="border-bottom border-gray pb-2 mb-0">Recent updates</h6>
+        <div class="media text-muted pt-3">
+          <img data-src="holder.js/32x32?theme=thumb&bg=007bff&fg=007bff&size=1" alt="" class="mr-2 rounded">
+          <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
+            <strong class="d-block text-gray-dark">@username</strong>
+            Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.
+          </p>
+        </div>
+        <div class="media text-muted pt-3">
+          <img data-src="holder.js/32x32?theme=thumb&bg=e83e8c&fg=e83e8c&size=1" alt="" class="mr-2 rounded">
+          <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
+            <strong class="d-block text-gray-dark">@username</strong>
+            Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.
+          </p>
+        </div>
+        <div class="media text-muted pt-3">
+          <img data-src="holder.js/32x32?theme=thumb&bg=6f42c1&fg=6f42c1&size=1" alt="" class="mr-2 rounded">
+          <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
+            <strong class="d-block text-gray-dark">@username</strong>
+            Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.
+          </p>
+        </div>
+        <small class="d-block text-right mt-3">
+          <a href="#">All updates</a>
+        </small>
+      </div>
+
+      <div class="my-3 p-3 bg-white rounded shadow-sm">
+        <h6 class="border-bottom border-gray pb-2 mb-0">Suggestions</h6>
+        <div class="media text-muted pt-3">
+          <img data-src="holder.js/32x32?theme=thumb&bg=007bff&fg=007bff&size=1" alt="" class="mr-2 rounded">
+          <div class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
+            <div class="d-flex justify-content-between align-items-center w-100">
+              <strong class="text-gray-dark">Full Name</strong>
+              <a href="#">Follow</a>
+            </div>
+            <span class="d-block">@username</span>
+          </div>
+        </div>
+        <div class="media text-muted pt-3">
+          <img data-src="holder.js/32x32?theme=thumb&bg=007bff&fg=007bff&size=1" alt="" class="mr-2 rounded">
+          <div class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
+            <div class="d-flex justify-content-between align-items-center w-100">
+              <strong class="text-gray-dark">Full Name</strong>
+              <a href="#">Follow</a>
+            </div>
+            <span class="d-block">@username</span>
+          </div>
+        </div>
+        <div class="media text-muted pt-3">
+          <img data-src="holder.js/32x32?theme=thumb&bg=007bff&fg=007bff&size=1" alt="" class="mr-2 rounded">
+          <div class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
+            <div class="d-flex justify-content-between align-items-center w-100">
+              <strong class="text-gray-dark">Full Name</strong>
+              <a href="#">Follow</a>
+            </div>
+            <span class="d-block">@username</span>
+          </div>
+        </div>
+        <small class="d-block text-right mt-3">
+          <a href="#">All suggestions</a>
+        </small>
+      </div>
+    </main>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <script src="../../assets/js/vendor/holder.min.js"></script>
+    <script src="offcanvas.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/offcanvas.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/offcanvas.css
new file mode 100644
index 000000000..22de95a41
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/offcanvas.css
@@ -0,0 +1,75 @@
+html,
+body {
+  overflow-x: hidden; /* Prevent scroll on narrow devices */
+}
+
+body {
+  padding-top: 56px;
+}
+
+@media (max-width: 991.98px) {
+  .offcanvas-collapse {
+    position: fixed;
+    top: 56px; /* Height of navbar */
+    bottom: 0;
+    left: 100%;
+    width: 100%;
+    padding-right: 1rem;
+    padding-left: 1rem;
+    overflow-y: auto;
+    visibility: hidden;
+    background-color: #343a40;
+    transition-timing-function: ease-in-out;
+    transition-duration: .3s;
+    transition-property: left, visibility;
+  }
+  .offcanvas-collapse.open {
+    left: 0;
+    visibility: visible;
+  }
+}
+
+.nav-scroller {
+  position: relative;
+  z-index: 2;
+  height: 2.75rem;
+  overflow-y: hidden;
+}
+
+.nav-scroller .nav {
+  display: -ms-flexbox;
+  display: flex;
+  -ms-flex-wrap: nowrap;
+  flex-wrap: nowrap;
+  padding-bottom: 1rem;
+  margin-top: -1px;
+  overflow-x: auto;
+  color: rgba(255, 255, 255, .75);
+  text-align: center;
+  white-space: nowrap;
+  -webkit-overflow-scrolling: touch;
+}
+
+.nav-underline .nav-link {
+  padding-top: .75rem;
+  padding-bottom: .75rem;
+  font-size: .875rem;
+  color: #6c757d;
+}
+
+.nav-underline .nav-link:hover {
+  color: #007bff;
+}
+
+.nav-underline .active {
+  font-weight: 500;
+  color: #343a40;
+}
+
+.text-white-50 { color: rgba(255, 255, 255, .5); }
+
+.bg-purple { background-color: #6f42c1; }
+
+.lh-100 { line-height: 1; }
+.lh-125 { line-height: 1.25; }
+.lh-150 { line-height: 1.5; }
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/offcanvas.js b/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/offcanvas.js
new file mode 100644
index 000000000..bc3e46711
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/offcanvas/offcanvas.js
@@ -0,0 +1,7 @@
+$(function () {
+  'use strict'
+
+  $('[data-toggle="offcanvas"]').on('click', function () {
+    $('.offcanvas-collapse').toggleClass('open')
+  })
+})
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/pricing/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/pricing/index.html
new file mode 100644
index 000000000..5ae570aad
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/pricing/index.html
@@ -0,0 +1,142 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Pricing example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="pricing.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <div class="d-flex flex-column flex-md-row align-items-center p-3 px-md-4 mb-3 bg-white border-bottom shadow-sm">
+      <h5 class="my-0 mr-md-auto font-weight-normal">Company name</h5>
+      <nav class="my-2 my-md-0 mr-md-3">
+        <a class="p-2 text-dark" href="#">Features</a>
+        <a class="p-2 text-dark" href="#">Enterprise</a>
+        <a class="p-2 text-dark" href="#">Support</a>
+        <a class="p-2 text-dark" href="#">Pricing</a>
+      </nav>
+      <a class="btn btn-outline-primary" href="#">Sign up</a>
+    </div>
+
+    <div class="pricing-header px-3 py-3 pt-md-5 pb-md-4 mx-auto text-center">
+      <h1 class="display-4">Pricing</h1>
+      <p class="lead">Quickly build an effective pricing table for your potential customers with this Bootstrap example. It's built with default Bootstrap components and utilities with little customization.</p>
+    </div>
+
+    <div class="container">
+      <div class="card-deck mb-3 text-center">
+        <div class="card mb-4 shadow-sm">
+          <div class="card-header">
+            <h4 class="my-0 font-weight-normal">Free</h4>
+          </div>
+          <div class="card-body">
+            <h1 class="card-title pricing-card-title">$0 <small class="text-muted">/ mo</small></h1>
+            <ul class="list-unstyled mt-3 mb-4">
+              <li>10 users included</li>
+              <li>2 GB of storage</li>
+              <li>Email support</li>
+              <li>Help center access</li>
+            </ul>
+            <button type="button" class="btn btn-lg btn-block btn-outline-primary">Sign up for free</button>
+          </div>
+        </div>
+        <div class="card mb-4 shadow-sm">
+          <div class="card-header">
+            <h4 class="my-0 font-weight-normal">Pro</h4>
+          </div>
+          <div class="card-body">
+            <h1 class="card-title pricing-card-title">$15 <small class="text-muted">/ mo</small></h1>
+            <ul class="list-unstyled mt-3 mb-4">
+              <li>20 users included</li>
+              <li>10 GB of storage</li>
+              <li>Priority email support</li>
+              <li>Help center access</li>
+            </ul>
+            <button type="button" class="btn btn-lg btn-block btn-primary">Get started</button>
+          </div>
+        </div>
+        <div class="card mb-4 shadow-sm">
+          <div class="card-header">
+            <h4 class="my-0 font-weight-normal">Enterprise</h4>
+          </div>
+          <div class="card-body">
+            <h1 class="card-title pricing-card-title">$29 <small class="text-muted">/ mo</small></h1>
+            <ul class="list-unstyled mt-3 mb-4">
+              <li>30 users included</li>
+              <li>15 GB of storage</li>
+              <li>Phone and email support</li>
+              <li>Help center access</li>
+            </ul>
+            <button type="button" class="btn btn-lg btn-block btn-primary">Contact us</button>
+          </div>
+        </div>
+      </div>
+
+      <footer class="pt-4 my-md-5 pt-md-5 border-top">
+        <div class="row">
+          <div class="col-12 col-md">
+            <img class="mb-2" src="../../assets/brand/bootstrap-solid.svg" alt="" width="24" height="24">
+            <small class="d-block mb-3 text-muted">&copy; 2017-2018</small>
+          </div>
+          <div class="col-6 col-md">
+            <h5>Features</h5>
+            <ul class="list-unstyled text-small">
+              <li><a class="text-muted" href="#">Cool stuff</a></li>
+              <li><a class="text-muted" href="#">Random feature</a></li>
+              <li><a class="text-muted" href="#">Team feature</a></li>
+              <li><a class="text-muted" href="#">Stuff for developers</a></li>
+              <li><a class="text-muted" href="#">Another one</a></li>
+              <li><a class="text-muted" href="#">Last time</a></li>
+            </ul>
+          </div>
+          <div class="col-6 col-md">
+            <h5>Resources</h5>
+            <ul class="list-unstyled text-small">
+              <li><a class="text-muted" href="#">Resource</a></li>
+              <li><a class="text-muted" href="#">Resource name</a></li>
+              <li><a class="text-muted" href="#">Another resource</a></li>
+              <li><a class="text-muted" href="#">Final resource</a></li>
+            </ul>
+          </div>
+          <div class="col-6 col-md">
+            <h5>About</h5>
+            <ul class="list-unstyled text-small">
+              <li><a class="text-muted" href="#">Team</a></li>
+              <li><a class="text-muted" href="#">Locations</a></li>
+              <li><a class="text-muted" href="#">Privacy</a></li>
+              <li><a class="text-muted" href="#">Terms</a></li>
+            </ul>
+          </div>
+        </div>
+      </footer>
+    </div>
+
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <script src="../../assets/js/vendor/holder.min.js"></script>
+    <script>
+      Holder.addTheme('thumb', {
+        bg: '#55595c',
+        fg: '#eceeef',
+        text: 'Thumbnail'
+      });
+    </script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/pricing/pricing.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/pricing/pricing.css
new file mode 100644
index 000000000..cbf0ec013
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/pricing/pricing.css
@@ -0,0 +1,20 @@
+html {
+  font-size: 14px;
+}
+@media (min-width: 768px) {
+  html {
+    font-size: 16px;
+  }
+}
+
+.container {
+  max-width: 960px;
+}
+
+.pricing-header {
+  max-width: 700px;
+}
+
+.card-deck .card {
+  min-width: 220px;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/product/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/product/index.html
new file mode 100644
index 000000000..5477eb37b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/product/index.html
@@ -0,0 +1,178 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Product example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="product.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <nav class="site-header sticky-top py-1">
+      <div class="container d-flex flex-column flex-md-row justify-content-between">
+        <a class="py-2" href="#">
+          <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="d-block mx-auto"><circle cx="12" cy="12" r="10"></circle><line x1="14.31" y1="8" x2="20.05" y2="17.94"></line><line x1="9.69" y1="8" x2="21.17" y2="8"></line><line x1="7.38" y1="12" x2="13.12" y2="2.06"></line><line x1="9.69" y1="16" x2="3.95" y2="6.06"></line><line x1="14.31" y1="16" x2="2.83" y2="16"></line><line x1="16.62" y1="12" x2="10.88" y2="21.94"></line></svg>
+        </a>
+        <a class="py-2 d-none d-md-inline-block" href="#">Tour</a>
+        <a class="py-2 d-none d-md-inline-block" href="#">Product</a>
+        <a class="py-2 d-none d-md-inline-block" href="#">Features</a>
+        <a class="py-2 d-none d-md-inline-block" href="#">Enterprise</a>
+        <a class="py-2 d-none d-md-inline-block" href="#">Support</a>
+        <a class="py-2 d-none d-md-inline-block" href="#">Pricing</a>
+        <a class="py-2 d-none d-md-inline-block" href="#">Cart</a>
+      </div>
+    </nav>
+
+    <div class="position-relative overflow-hidden p-3 p-md-5 m-md-3 text-center bg-light">
+      <div class="col-md-5 p-lg-5 mx-auto my-5">
+        <h1 class="display-4 font-weight-normal">Punny headline</h1>
+        <p class="lead font-weight-normal">And an even wittier subheading to boot. Jumpstart your marketing efforts with this example based on Apple's marketing pages.</p>
+        <a class="btn btn-outline-secondary" href="#">Coming soon</a>
+      </div>
+      <div class="product-device shadow-sm d-none d-md-block"></div>
+      <div class="product-device product-device-2 shadow-sm d-none d-md-block"></div>
+    </div>
+
+    <div class="d-md-flex flex-md-equal w-100 my-md-3 pl-md-3">
+      <div class="bg-dark mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center text-white overflow-hidden">
+        <div class="my-3 py-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-light shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+      <div class="bg-light mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center overflow-hidden">
+        <div class="my-3 p-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-dark shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+    </div>
+
+    <div class="d-md-flex flex-md-equal w-100 my-md-3 pl-md-3">
+      <div class="bg-light mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center overflow-hidden">
+        <div class="my-3 p-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-dark shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+      <div class="bg-primary mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center text-white overflow-hidden">
+        <div class="my-3 py-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-light shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+    </div>
+
+    <div class="d-md-flex flex-md-equal w-100 my-md-3 pl-md-3">
+      <div class="bg-light mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center overflow-hidden">
+        <div class="my-3 p-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-white shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+      <div class="bg-light mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center overflow-hidden">
+        <div class="my-3 py-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-white shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+    </div>
+
+    <div class="d-md-flex flex-md-equal w-100 my-md-3 pl-md-3">
+      <div class="bg-light mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center overflow-hidden">
+        <div class="my-3 p-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-white shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+      <div class="bg-light mr-md-3 pt-3 px-3 pt-md-5 px-md-5 text-center overflow-hidden">
+        <div class="my-3 py-3">
+          <h2 class="display-5">Another headline</h2>
+          <p class="lead">And an even wittier subheading.</p>
+        </div>
+        <div class="bg-white shadow-sm mx-auto" style="width: 80%; height: 300px; border-radius: 21px 21px 0 0;"></div>
+      </div>
+    </div>
+
+    <footer class="container py-5">
+      <div class="row">
+        <div class="col-12 col-md">
+          <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="d-block mb-2"><circle cx="12" cy="12" r="10"></circle><line x1="14.31" y1="8" x2="20.05" y2="17.94"></line><line x1="9.69" y1="8" x2="21.17" y2="8"></line><line x1="7.38" y1="12" x2="13.12" y2="2.06"></line><line x1="9.69" y1="16" x2="3.95" y2="6.06"></line><line x1="14.31" y1="16" x2="2.83" y2="16"></line><line x1="16.62" y1="12" x2="10.88" y2="21.94"></line></svg>
+          <small class="d-block mb-3 text-muted">&copy; 2017-2018</small>
+        </div>
+        <div class="col-6 col-md">
+          <h5>Features</h5>
+          <ul class="list-unstyled text-small">
+            <li><a class="text-muted" href="#">Cool stuff</a></li>
+            <li><a class="text-muted" href="#">Random feature</a></li>
+            <li><a class="text-muted" href="#">Team feature</a></li>
+            <li><a class="text-muted" href="#">Stuff for developers</a></li>
+            <li><a class="text-muted" href="#">Another one</a></li>
+            <li><a class="text-muted" href="#">Last time</a></li>
+          </ul>
+        </div>
+        <div class="col-6 col-md">
+          <h5>Resources</h5>
+          <ul class="list-unstyled text-small">
+            <li><a class="text-muted" href="#">Resource</a></li>
+            <li><a class="text-muted" href="#">Resource name</a></li>
+            <li><a class="text-muted" href="#">Another resource</a></li>
+            <li><a class="text-muted" href="#">Final resource</a></li>
+          </ul>
+        </div>
+        <div class="col-6 col-md">
+          <h5>Resources</h5>
+          <ul class="list-unstyled text-small">
+            <li><a class="text-muted" href="#">Business</a></li>
+            <li><a class="text-muted" href="#">Education</a></li>
+            <li><a class="text-muted" href="#">Government</a></li>
+            <li><a class="text-muted" href="#">Gaming</a></li>
+          </ul>
+        </div>
+        <div class="col-6 col-md">
+          <h5>About</h5>
+          <ul class="list-unstyled text-small">
+            <li><a class="text-muted" href="#">Team</a></li>
+            <li><a class="text-muted" href="#">Locations</a></li>
+            <li><a class="text-muted" href="#">Privacy</a></li>
+            <li><a class="text-muted" href="#">Terms</a></li>
+          </ul>
+        </div>
+      </div>
+    </footer>
+
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <script src="../../assets/js/vendor/holder.min.js"></script>
+    <script>
+      Holder.addTheme('thumb', {
+        bg: '#55595c',
+        fg: '#eceeef',
+        text: 'Thumbnail'
+      });
+    </script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/product/product.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/product/product.css
new file mode 100644
index 000000000..4db2864fc
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/product/product.css
@@ -0,0 +1,74 @@
+.container {
+  max-width: 960px;
+}
+
+/*
+ * Custom translucent site header
+ */
+
+.site-header {
+  background-color: rgba(0, 0, 0, .85);
+  -webkit-backdrop-filter: saturate(180%) blur(20px);
+  backdrop-filter: saturate(180%) blur(20px);
+}
+.site-header a {
+  color: #999;
+  transition: ease-in-out color .15s;
+}
+.site-header a:hover {
+  color: #fff;
+  text-decoration: none;
+}
+
+/*
+ * Dummy devices (replace them with your own or something else entirely!)
+ */
+
+.product-device {
+  position: absolute;
+  right: 10%;
+  bottom: -30%;
+  width: 300px;
+  height: 540px;
+  background-color: #333;
+  border-radius: 21px;
+  -webkit-transform: rotate(30deg);
+  transform: rotate(30deg);
+}
+
+.product-device::before {
+  position: absolute;
+  top: 10%;
+  right: 10px;
+  bottom: 10%;
+  left: 10px;
+  content: "";
+  background-color: rgba(255, 255, 255, .1);
+  border-radius: 5px;
+}
+
+.product-device-2 {
+  top: -25%;
+  right: auto;
+  bottom: 0;
+  left: 5%;
+  background-color: #e5e5e5;
+}
+
+
+/*
+ * Extra utilities
+ */
+
+.flex-equal > * {
+  -ms-flex: 1;
+  flex: 1;
+}
+@media (min-width: 768px) {
+  .flex-md-equal > * {
+    -ms-flex: 1;
+    flex: 1;
+  }
+}
+
+.overflow-hidden { overflow: hidden; }
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/album.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/album.png
new file mode 100644
index 000000000..162269c46
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/album.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/blog.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/blog.png
new file mode 100644
index 000000000..f5480314b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/blog.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/carousel.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/carousel.png
new file mode 100644
index 000000000..39df35930
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/carousel.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/checkout.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/checkout.png
new file mode 100644
index 000000000..3e3c5af4b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/checkout.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/cover.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/cover.png
new file mode 100644
index 000000000..9d20fb2ed
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/cover.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/dashboard.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/dashboard.png
new file mode 100644
index 000000000..52b23dff6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/dashboard.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/floating-labels.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/floating-labels.png
new file mode 100644
index 000000000..5d284bfe0
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/floating-labels.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/grid.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/grid.png
new file mode 100644
index 000000000..d7a111b0c
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/grid.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/jumbotron.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/jumbotron.png
new file mode 100644
index 000000000..4d83dffa6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/jumbotron.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-bottom.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-bottom.png
new file mode 100644
index 000000000..a62faa182
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-bottom.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-fixed.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-fixed.png
new file mode 100644
index 000000000..1ce8ca576
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-fixed.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-static.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-static.png
new file mode 100644
index 000000000..758aa61e8
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbar-static.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbars.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbars.png
new file mode 100644
index 000000000..ce11b8d2c
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/navbars.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/offcanvas.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/offcanvas.png
new file mode 100644
index 000000000..e5287dde8
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/offcanvas.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/pricing.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/pricing.png
new file mode 100644
index 000000000..9ddac54ea
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/pricing.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/product.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/product.png
new file mode 100644
index 000000000..1dfe45482
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/product.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sign-in.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sign-in.png
new file mode 100644
index 000000000..8b3431de9
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sign-in.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/starter-template.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/starter-template.png
new file mode 100644
index 000000000..436c452de
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/starter-template.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sticky-footer-navbar.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sticky-footer-navbar.png
new file mode 100644
index 000000000..9478901f6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sticky-footer-navbar.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sticky-footer.png b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sticky-footer.png
new file mode 100644
index 000000000..5a008a0ac
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/screenshots/sticky-footer.png
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/sign-in/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/sign-in/index.html
new file mode 100644
index 000000000..2c9436643
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/sign-in/index.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Signin Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="signin.css" rel="stylesheet">
+  </head>
+
+  <body class="text-center">
+    <form class="form-signin">
+      <img class="mb-4" src="../../assets/brand/bootstrap-solid.svg" alt="" width="72" height="72">
+      <h1 class="h3 mb-3 font-weight-normal">Please sign in</h1>
+      <label for="inputEmail" class="sr-only">Email address</label>
+      <input type="email" id="inputEmail" class="form-control" placeholder="Email address" required autofocus>
+      <label for="inputPassword" class="sr-only">Password</label>
+      <input type="password" id="inputPassword" class="form-control" placeholder="Password" required>
+      <div class="checkbox mb-3">
+        <label>
+          <input type="checkbox" value="remember-me"> Remember me
+        </label>
+      </div>
+      <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
+      <p class="mt-5 mb-3 text-muted">&copy; 2017-2018</p>
+    </form>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/sign-in/signin.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/sign-in/signin.css
new file mode 100644
index 000000000..90cc93e5b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/sign-in/signin.css
@@ -0,0 +1,44 @@
+html,
+body {
+  height: 100%;
+}
+
+body {
+  display: -ms-flexbox;
+  display: flex;
+  -ms-flex-align: center;
+  align-items: center;
+  padding-top: 40px;
+  padding-bottom: 40px;
+  background-color: #f5f5f5;
+}
+
+.form-signin {
+  width: 100%;
+  max-width: 330px;
+  padding: 15px;
+  margin: auto;
+}
+.form-signin .checkbox {
+  font-weight: 400;
+}
+.form-signin .form-control {
+  position: relative;
+  box-sizing: border-box;
+  height: auto;
+  padding: 10px;
+  font-size: 16px;
+}
+.form-signin .form-control:focus {
+  z-index: 2;
+}
+.form-signin input[type="email"] {
+  margin-bottom: -1px;
+  border-bottom-right-radius: 0;
+  border-bottom-left-radius: 0;
+}
+.form-signin input[type="password"] {
+  margin-bottom: 10px;
+  border-top-left-radius: 0;
+  border-top-right-radius: 0;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/starter-template/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/starter-template/index.html
new file mode 100644
index 000000000..03575146d
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/starter-template/index.html
@@ -0,0 +1,71 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Starter Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="starter-template.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <nav class="navbar navbar-expand-md navbar-dark bg-dark fixed-top">
+      <a class="navbar-brand" href="#">Navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExampleDefault">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown01">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-lg-0">
+          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
+    </nav>
+
+    <main role="main" class="container">
+
+      <div class="starter-template">
+        <h1>Bootstrap starter template</h1>
+        <p class="lead">Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly barebones HTML document.</p>
+      </div>
+
+    </main><!-- /.container -->
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/starter-template/starter-template.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/starter-template/starter-template.css
new file mode 100644
index 000000000..5f64cd294
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/starter-template/starter-template.css
@@ -0,0 +1,7 @@
+body {
+  padding-top: 5rem;
+}
+.starter-template {
+  padding: 3rem 1.5rem;
+  text-align: center;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer-navbar/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer-navbar/index.html
new file mode 100644
index 000000000..9f8e174e3
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer-navbar/index.html
@@ -0,0 +1,69 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Sticky Footer Navbar Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="sticky-footer-navbar.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <header>
+      <!-- Fixed navbar -->
+      <nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
+        <a class="navbar-brand" href="#">Fixed navbar</a>
+        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
+          <span class="navbar-toggler-icon"></span>
+        </button>
+        <div class="collapse navbar-collapse" id="navbarCollapse">
+          <ul class="navbar-nav mr-auto">
+            <li class="nav-item active">
+              <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link" href="#">Link</a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link disabled" href="#">Disabled</a>
+            </li>
+          </ul>
+          <form class="form-inline mt-2 mt-md-0">
+            <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
+            <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+          </form>
+        </div>
+      </nav>
+    </header>
+
+    <!-- Begin page content -->
+    <main role="main" class="container">
+      <h1 class="mt-5">Sticky footer with fixed navbar</h1>
+      <p class="lead">Pin a fixed-height footer to the bottom of the viewport in desktop browsers with this custom HTML and CSS. A fixed navbar has been added with <code>padding-top: 60px;</code> on the <code>body &gt; .container</code>.</p>
+      <p>Back to <a href="../sticky-footer">the default sticky footer</a> minus the navbar.</p>
+    </main>
+
+    <footer class="footer">
+      <div class="container">
+        <span class="text-muted">Place sticky footer content here.</span>
+      </div>
+    </footer>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer-navbar/sticky-footer-navbar.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer-navbar/sticky-footer-navbar.css
new file mode 100644
index 000000000..07fd56a64
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer-navbar/sticky-footer-navbar.css
@@ -0,0 +1,37 @@
+/* Sticky footer styles
+-------------------------------------------------- */
+html {
+  position: relative;
+  min-height: 100%;
+}
+body {
+  /* Margin bottom by footer height */
+  margin-bottom: 60px;
+}
+.footer {
+  position: absolute;
+  bottom: 0;
+  width: 100%;
+  /* Set the fixed height of the footer here */
+  height: 60px;
+  line-height: 60px; /* Vertically center the text there */
+  background-color: #f5f5f5;
+}
+
+
+/* Custom page CSS
+-------------------------------------------------- */
+/* Not required for template or sticky footer method. */
+
+body > .container {
+  padding: 60px 15px 0;
+}
+
+.footer > .container {
+  padding-right: 15px;
+  padding-left: 15px;
+}
+
+code {
+  font-size: 80%;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer/index.html
new file mode 100644
index 000000000..839d9883e
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer/index.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../../../favicon.ico">
+
+    <title>Sticky Footer Template for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="sticky-footer.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <!-- Begin page content -->
+    <main role="main" class="container">
+      <h1 class="mt-5">Sticky footer</h1>
+      <p class="lead">Pin a fixed-height footer to the bottom of the viewport in desktop browsers with this custom HTML and CSS.</p>
+      <p>Use <a href="../sticky-footer-navbar">the sticky footer with a fixed navbar</a> if need be, too.</p>
+    </main>
+
+    <footer class="footer">
+      <div class="container">
+        <span class="text-muted">Place sticky footer content here.</span>
+      </div>
+    </footer>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer/sticky-footer.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer/sticky-footer.css
new file mode 100644
index 000000000..ebe29104f
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/sticky-footer/sticky-footer.css
@@ -0,0 +1,28 @@
+/* Sticky footer styles
+-------------------------------------------------- */
+html {
+  position: relative;
+  min-height: 100%;
+}
+body {
+  margin-bottom: 60px; /* Margin bottom by footer height */
+}
+.footer {
+  position: absolute;
+  bottom: 0;
+  width: 100%;
+  height: 60px; /* Set the fixed height of the footer here */
+  line-height: 60px; /* Vertically center the text there */
+  background-color: #f5f5f5;
+}
+
+
+/* Custom page CSS
+-------------------------------------------------- */
+/* Not required for template or sticky footer method. */
+
+.container {
+  width: auto;
+  max-width: 680px;
+  padding: 0 15px;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/index.html b/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/index.html
new file mode 100644
index 000000000..fabe12ddf
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/index.html
@@ -0,0 +1,45 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="shortcut icon" href="../../../../favicon.ico">
+
+    <title>Tooltip Viewport Example for Bootstrap</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="../../dist/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="tooltip-viewport.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+    <button type="button" class="btn btn-secondary float-right tooltip-bottom" title="This should be shifted to the left">Shift Left</button>
+    <button type="button" class="btn btn-secondary tooltip-bottom" title="This should be shifted to the right">Shift Right</button>
+    <button type="button" class="btn btn-secondary tooltip-right" title="This should be shifted down">Shift Down</button>
+
+    <button type="button" class="btn btn-secondary tooltip-right btn-bottom" title="This should be shifted up">Shift Up</button>
+
+    <div class="container-viewport">
+      <button type="button" class="btn btn-secondary tooltip-viewport-bottom" title="This should be shifted to the left">Shift Left</button>
+      <button type="button" class="btn btn-secondary tooltip-viewport-right" title="This should be shifted down">Shift Down</button>
+
+      <button type="button" class="btn btn-secondary float-right tooltip-viewport-bottom" title="This should be shifted to the right">Shift Right</button>
+
+      <button type="button" class="btn btn-secondary tooltip-viewport-right btn-bottom" title="This should be shifted up">Shift Up</button>
+    </div>
+
+    <!-- Bootstrap core JavaScript
+    ================================================== -->
+    <!-- Placed at the end of the document so the pages load faster -->
+    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
+    <script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
+    <script src="../../assets/js/vendor/popper.min.js"></script>
+    <script src="../../dist/js/bootstrap.min.js"></script>
+    <script src="tooltip-viewport.js"></script>
+  </body>
+</html>
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/tooltip-viewport.css b/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/tooltip-viewport.css
new file mode 100644
index 000000000..26aa2e348
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/tooltip-viewport.css
@@ -0,0 +1,26 @@
+body {
+  height: 1200px;
+}
+.tooltip {
+  min-width: 250px;
+  max-width: 500px;
+}
+.tooltip .tooltip-inner {
+  min-width: 250px;
+  max-width: 500px;
+  min-height: 100px;
+  text-align: left;
+}
+.container-viewport {
+  position: absolute;
+  top: 100px;
+  right: 250px;
+  left: 250px;
+  height: 300px;
+  background-color: #eee;
+}
+.btn-bottom {
+  position: absolute;
+  bottom: 0;
+  left: 0;
+}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/tooltip-viewport.js b/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/tooltip-viewport.js
new file mode 100644
index 000000000..dc75e18c6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/examples/tooltip-viewport/tooltip-viewport.js
@@ -0,0 +1,32 @@
+$(function () {
+  'use strict'
+
+  $('.tooltip-right').tooltip({
+    placement: 'right',
+    viewport: {
+      selector: 'body',
+      padding: 2
+    }
+  })
+  $('.tooltip-bottom').tooltip({
+    placement: 'bottom',
+    viewport: {
+      selector: 'body',
+      padding: 2
+    }
+  })
+  $('.tooltip-viewport-right').tooltip({
+    placement: 'right',
+    viewport: {
+      selector: '.container-viewport',
+      padding: 2
+    }
+  })
+  $('.tooltip-viewport-bottom').tooltip({
+    placement: 'bottom',
+    viewport: {
+      selector: '.container-viewport',
+      padding: 2
+    }
+  })
+})
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/accessibility.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/accessibility.md
new file mode 100644
index 000000000..5a0c0b0eb
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/accessibility.md
@@ -0,0 +1,57 @@
+---
+layout: docs
+title: Accessibility
+description: A brief overview of Bootstrap's features and limitations for the creation of accessible content.
+group: getting-started
+toc: true
+---
+
+Bootstrap provides an easy-to-use framework of ready-made styles, layout tools, and interactive components, allowing developers to create websites and applications that are visually appealing, functionally rich, and accessible out of the box.
+
+## Overview and Limitations
+
+The overall accessibility of any project built with Bootstrap depends in large part on the author's markup, additional styling, and scripting they've included. However, provided that these have been implemented correctly, it should be perfectly possible to create websites and applications with Bootstrap that fulfill [<abbr title="Web Content Accessibility Guidelines">WCAG</abbr> 2.0](https://www.w3.org/TR/WCAG20/) (A/AA/AAA), [Section 508](https://www.section508.gov/) and similar accessibility standards and requirements.
+
+### Structural markup
+
+Bootstrap's styling and layout can be applied to a wide range of markup structures. This documentation aims to provide developers with best practice examples to demonstrate the use of Bootstrap itself and illustrate appropriate semantic markup, including ways in which potential accessibility concerns can be addressed.
+
+### Interactive components
+
+Bootstrap's interactive components—such as modal dialogs, dropdown menus and custom tooltips—are designed to work for touch, mouse and keyboard users. Through the use of relevant [<abbr title="Web Accessibility Initiative">WAI</abbr>-<abbr title="Accessible Rich Internet Applications">ARIA</abbr>](https://www.w3.org/WAI/intro/aria) roles and attributes, these components should also be understandable and operable using assistive technologies (such as screen readers).
+
+Because Bootstrap's components are purposely designed to be fairly generic, authors may need to include further <abbr title="Accessible Rich Internet Applications">ARIA</abbr> roles and attributes, as well as JavaScript behavior, to more accurately convey the precise nature and functionality of their component. This is usually noted in the documentation.
+
+### Color contrast
+
+Most colors that currently make up Bootstrap's default palette—used throughout the framework for things such as button variations, alert variations, form validation indicators—lead to *insufficient* color contrast (below the recommended [WCAG 2.0 color contrast ratio of 4.5:1](https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html)) when used against a light background. Authors will need to manually modify/extend these default colors to ensure adequate color contrast ratios.
+
+### Visually hidden content
+
+Content which should be visually hidden, but remain accessible to assistive technologies such as screen readers, can be styled using the `.sr-only` class. This can be useful in situations where additional visual information or cues (such as meaning denoted through the use of color) need to also be conveyed to non-visual users.
+
+{% highlight html %}
+<p class="text-danger">
+  <span class="sr-only">Danger: </span>
+  This action is not reversible
+</p>
+{% endhighlight %}
+
+For visually hidden interactive controls, such as traditional "skip" links, `.sr-only` can be combined with the `.sr-only-focusable` class. This will ensure that the control becomes visible once focused (for sighted keyboard users).
+
+{% highlight html %}
+<a class="sr-only sr-only-focusable" href="#content">Skip to main content</a>
+{% endhighlight %}
+
+### Reduced motion
+
+Bootstrap includes support for the [`prefers-reduced-motion` media feature](https://drafts.csswg.org/mediaqueries-5/#prefers-reduced-motion). In browsers/environments that allow the user to specify their preference for reduced motion, most CSS transition effects in Bootstrap (for instance, when a modal dialog is opened or closed) will be disabled. Currently, support is limited to Safari on macOS and iOS.
+
+## Additional resources
+
+- [Web Content Accessibility Guidelines (WCAG) 2.0](https://www.w3.org/TR/WCAG20/)
+- [The A11Y Project](https://a11yproject.com/)
+- [MDN accessibility documentation](https://developer.mozilla.org/en-US/docs/Web/Accessibility)
+- [Tenon.io Accessibility Checker](https://tenon.io/)
+- [Colour Contrast Analyser (CCA)](https://developer.paciellogroup.com/resources/contrastanalyser/)
+- ["HTML Codesniffer" bookmarklet for identifying accessibility issues](https://github.com/squizlabs/HTML_CodeSniffer)
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/best-practices.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/best-practices.md
new file mode 100644
index 000000000..1e7af39ee
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/best-practices.md
@@ -0,0 +1,21 @@
+---
+layout: docs
+title: Best practices
+description: Learn about some of the best practices we've gathered from years of working on and using Bootstrap.
+group: getting-started
+---
+
+We've designed and developed Bootstrap to work in a number of environments. Here are some of the best practices we've gathered from years of working on and using it ourselves.
+
+{% capture callout %}
+**Heads up!** This copy is a work in progress.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+### General outline
+
+- Working with CSS
+- Working with Sass files
+- Building new CSS components
+- Working with flexbox
+- Ask in [Slack](https://bootstrap-slack.herokuapp.com/)
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/browsers-devices.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/browsers-devices.md
new file mode 100644
index 000000000..8a4b0c8d7
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/browsers-devices.md
@@ -0,0 +1,193 @@
+---
+layout: docs
+title: Browsers and devices
+description: Learn about the browsers and devices, from modern to old, that are supported by Bootstrap, including known quirks and bugs for each.
+group: getting-started
+toc: true
+---
+
+## Supported browsers
+
+Bootstrap supports the **latest, stable releases** of all major browsers and platforms. On Windows, **we support Internet Explorer 10-11 / Microsoft Edge**.
+
+Alternative browsers which use the latest version of WebKit, Blink, or Gecko, whether directly or via the platform's web view API, are not explicitly supported. However, Bootstrap should (in most cases) display and function correctly in these browsers as well. More specific support information is provided below.
+
+You can find our supported range of browsers and their versions [in our `package.json`]({{ site.repo }}/blob/v4-dev/package.json):
+
+```json
+"browserslist": [
+  "last 1 major version",
+  ">= 1%",
+  "Chrome >= 45",
+  "Firefox >= 38",
+  "Edge >= 12",
+  "Explorer >= 10",
+  "iOS >= 9",
+  "Safari >= 9",
+  "Android >= 4.4",
+  "Opera >= 30"
+]
+```
+
+We use [Autoprefixer](https://github.com/postcss/autoprefixer) to handle intended browser support via CSS prefixes, which uses [Browserslist](https://github.com/browserslist/browserslist) to manage these browser versions. Consult their documentation for how to integrate these tools into your projects.
+
+### Mobile devices
+
+Generally speaking, Bootstrap supports the latest versions of each major platform's default browsers. Note that proxy browsers (such as Opera Mini, Opera Mobile's Turbo mode, UC Browser Mini, Amazon Silk) are not supported.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <td></td>
+      <th>Chrome</th>
+      <th>Firefox</th>
+      <th>Safari</th>
+      <th>Android Browser &amp; WebView</th>
+      <th>Microsoft Edge</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">Android</th>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported</td>
+      <td class="text-muted">N/A</td>
+      <td class="text-success">Android v5.0+ supported</td>
+      <td class="text-success">Supported</td>
+    </tr>
+    <tr>
+      <th scope="row">iOS</th>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported</td>
+      <td class="text-muted">N/A</td>
+      <td class="text-success">Supported</td>
+    </tr>
+    <tr>
+      <th scope="row">Windows 10 Mobile</th>
+      <td class="text-muted">N/A</td>
+      <td class="text-muted">N/A</td>
+      <td class="text-muted">N/A</td>
+      <td class="text-muted">N/A</td>
+      <td class="text-success">Supported</td>
+    </tr>
+  </tbody>
+</table>
+
+### Desktop browsers
+
+Similarly, the latest versions of most desktop browsers are supported.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <td></td>
+      <th>Chrome</th>
+      <th>Firefox</th>
+      <th>Internet Explorer</th>
+      <th>Microsoft Edge</th>
+      <th>Opera</th>
+      <th>Safari</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">Mac</th>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported</td>
+      <td class="text-muted">N/A</td>
+      <td class="text-muted">N/A</td>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported</td>
+    </tr>
+    <tr>
+      <th scope="row">Windows</th>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported, IE10+</td>
+      <td class="text-success">Supported</td>
+      <td class="text-success">Supported</td>
+      <td class="text-danger">Not supported</td>
+    </tr>
+  </tbody>
+</table>
+
+For Firefox, in addition to the latest normal stable release, we also support the latest [Extended Support Release (ESR)](https://www.mozilla.org/en-US/firefox/organizations/#faq) version of Firefox.
+
+Unofficially, Bootstrap should look and behave well enough in Chromium and Chrome for Linux, Firefox for Linux, and Internet Explorer 9, though they are not officially supported.
+
+For a list of some of the browser bugs that Bootstrap has to grapple with, see our [Wall of browser bugs]({{ site.baseurl }}/docs/{{ site.docs_version }}/browser-bugs/).
+
+## Internet Explorer
+
+Internet Explorer 10+ is supported; IE9 and down is not. Please be aware that some CSS3 properties and HTML5 elements are not fully supported in IE10, or require prefixed properties for full functionality. Visit [Can I use...](https://caniuse.com/) for details on browser support of CSS3 and HTML5 features.
+
+**If you require IE8-9 support, use Bootstrap 3.** It's the most stable version of our code and is still supported by our team for critical bugfixes and documentation changes. However, no new features will be added to it.
+
+## Modals and dropdowns on mobile
+
+### Overflow and scrolling
+
+Support for `overflow: hidden;` on the `<body>` element is quite limited in iOS and Android. To that end, when you scroll past the top or bottom of a modal in either of those devices' browsers, the `<body>` content will begin to scroll. See [Chrome bug #175502](https://bugs.chromium.org/p/chromium/issues/detail?id=175502) (fixed in Chrome v40) and [WebKit bug #153852](https://bugs.webkit.org/show_bug.cgi?id=153852).
+
+### iOS text fields and scrolling
+
+As of iOS 9.2, while a modal is open, if the initial touch of a scroll gesture is within the boundary of a textual `<input>` or a `<textarea>`, the `<body>` content underneath the modal will be scrolled instead of the modal itself. See [WebKit bug #153856](https://bugs.webkit.org/show_bug.cgi?id=153856).
+
+### Navbar Dropdowns
+
+The `.dropdown-backdrop` element isn't used on iOS in the nav because of the complexity of z-indexing. Thus, to close dropdowns in navbars, you must directly click the dropdown element (or [any other element which will fire a click event in iOS](https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile)).
+
+## Browser zooming
+
+Page zooming inevitably presents rendering artifacts in some components, both in Bootstrap and the rest of the web. Depending on the issue, we may be able to fix it (search first and then open an issue if need be). However, we tend to ignore these as they often have no direct solution other than hacky workarounds.
+
+## Sticky `:hover`/`:focus` on iOS
+
+While `:hover` isn't possible on most touch devices, iOS emulates this behavior, resulting in "sticky" hover styles that persist after tapping one element. These hover styles are only removed when users tap another element. This behavior is considered largely undesirable and appears to not be an issue on Android or Windows devices.
+
+Throughout our v4 alpha and beta releases, we included incomplete and commented out code for opting into a media query shim that would disable hover styles in touch device browsers that emulate hovering. This work was never fully completed or enabled, but to avoid complete breakage, we've opted to deprecate [this shim](https://github.com/twbs/mq4-hover-shim) and keep the mixins as shortcuts for the pseudo-classes.
+
+## Printing
+
+Even in some modern browsers, printing can be quirky.
+
+As of Safari v8.0, use of the fixed-width `.container` class can cause Safari to use an unusually small font size when printing. See [issue #14868]({{ site.repo }}/issues/14868) and [WebKit bug #138192](https://bugs.webkit.org/show_bug.cgi?id=138192) for more details. One potential workaround is the following CSS:
+
+{% highlight css %}
+@media print {
+  .container {
+    width: auto;
+  }
+}
+{% endhighlight %}
+
+## Android stock browser
+
+Out of the box, Android 4.1 (and even some newer releases apparently) ship with the Browser app as the default web browser of choice (as opposed to Chrome). Unfortunately, the Browser app has lots of bugs and inconsistencies with CSS in general.
+
+#### Select menu
+
+On `<select>` elements, the Android stock browser will not display the side controls if there is a `border-radius` and/or `border` applied. (See [this StackOverflow question](https://stackoverflow.com/questions/14744437/html-select-box-not-showing-drop-down-arrow-on-android-version-4-0-when-set-with) for details.) Use the snippet of code below to remove the offending CSS and render the `<select>` as an unstyled element on the Android stock browser. The user agent sniffing avoids interference with Chrome, Safari, and Mozilla browsers.
+
+{% highlight html %}
+<script>
+$(function () {
+  var nua = navigator.userAgent
+  var isAndroid = (nua.indexOf('Mozilla/5.0') > -1 && nua.indexOf('Android ') > -1 && nua.indexOf('AppleWebKit') > -1 && nua.indexOf('Chrome') === -1)
+  if (isAndroid) {
+    $('select.form-control').removeClass('form-control').css('width', '100%')
+  }
+})
+</script>
+{% endhighlight %}
+
+Want to see an example? [Check out this JS Bin demo.](http://jsbin.com/OyaqoDO/2)
+
+## Validators
+
+In order to provide the best possible experience to old and buggy browsers, Bootstrap uses [CSS browser hacks](http://browserhacks.com/) in several places to target special CSS to certain browser versions in order to work around bugs in the browsers themselves. These hacks understandably cause CSS validators to complain that they are invalid. In a couple places, we also use bleeding-edge CSS features that aren't yet fully standardized, but these are used purely for progressive enhancement.
+
+These validation warnings don't matter in practice since the non-hacky portion of our CSS does fully validate and the hacky portions don't interfere with the proper functioning of the non-hacky portion, hence why we deliberately ignore these particular warnings.
+
+Our HTML docs likewise have some trivial and inconsequential HTML validation warnings due to our inclusion of a workaround for [a certain Firefox bug](https://bugzilla.mozilla.org/show_bug.cgi?id=654072).
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/build-tools.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/build-tools.md
new file mode 100644
index 000000000..c26d9bdd0
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/build-tools.md
@@ -0,0 +1,57 @@
+---
+layout: docs
+title: Build tools
+description: Learn how to use Bootstrap's included npm scripts to build our documentation, compile source code, run tests, and more.
+group: getting-started
+toc: true
+---
+
+## Tooling setup
+
+Bootstrap uses [NPM scripts](https://docs.npmjs.com/misc/scripts) for its build system. Our [package.json]({{ site.repo }}/blob/v{{ site.current_version }}/package.json) includes convenient methods for working with the framework, including compiling code, running tests, and more.
+
+To use our build system and run our documentation locally, you'll need a copy of Bootstrap's source files and Node. Follow these steps and you should be ready to rock:
+
+1. [Download and install Node.js](https://nodejs.org/en/download/), which we use to manage our dependencies.
+2. Navigate to the root `/bootstrap` directory and run `npm install` to install our local dependencies listed in [package.json]({{ site.repo }}/blob/v{{ site.current_version }}/package.json).
+3. [Install Ruby][install-ruby], install [Bundler][gembundler] with `gem install bundler`, and finally run `bundle install`. This will install all Ruby dependencies, such as Jekyll and plugins.
+  - **Windows users:** Read [this guide](https://jekyllrb.com/docs/windows/) to get Jekyll up and running without problems.
+
+When completed, you'll be able to run the various commands provided from the command line.
+
+[install-ruby]: https://www.ruby-lang.org/en/documentation/installation/
+[gembundler]: https://bundler.io/
+
+## Using NPM scripts
+
+Our [package.json]({{ site.repo }}/blob/v{{ site.current_version }}/package.json) includes the following commands and tasks:
+
+| Task | Description |
+| --- | --- |
+| `npm run dist` | `npm run dist` creates the `/dist` directory with compiled files. **Uses [Sass](https://sass-lang.com/), [Autoprefixer][autoprefixer], and [UglifyJS](https://github.com/mishoo/UglifyJS2).** |
+| `npm test` | Same as `npm run dist` plus it runs tests locally |
+| `npm run docs` | Builds and lints CSS and JavaScript for docs. You can then run the documentation locally via `npm run docs-serve`. |
+
+Run `npm run` to see all the npm scripts.
+
+## Autoprefixer
+
+Bootstrap uses [Autoprefixer][autoprefixer] (included in our build process) to automatically add vendor prefixes to some CSS properties at build time. Doing so saves us time and code by allowing us to write key parts of our CSS a single time while eliminating the need for vendor mixins like those found in v3.
+
+We maintain the list of browsers supported through Autoprefixer in a separate file within our GitHub repository. See [/package.json]({{ site.repo }}/blob/v{{ site.current_version }}/package.json) for details.
+
+## Local documentation
+
+Running our documentation locally requires the use of Jekyll, a decently flexible static site generator that provides us: basic includes, Markdown-based files, templates, and more. Here's how to get it started:
+
+1. Run through the [tooling setup](#tooling-setup) above to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
+2. From the root `/bootstrap` directory, run `npm run docs-serve` in the command line.
+3. Open `http://localhost:9001` in your browser, and voilà.
+
+Learn more about using Jekyll by reading its [documentation](https://jekyllrb.com/docs/home/).
+
+## Troubleshooting
+
+Should you encounter problems with installing dependencies, uninstall all previous dependency versions (global and local). Then, rerun `npm install`.
+
+[autoprefixer]: https://github.com/postcss/autoprefixer
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/contents.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/contents.md
new file mode 100644
index 000000000..fd38e2fba
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/contents.md
@@ -0,0 +1,138 @@
+---
+layout: docs
+title: Contents
+description: Discover what's included in Bootstrap, including our precompiled and source code flavors. Remember, Bootstrap's JavaScript plugins require jQuery.
+group: getting-started
+toc: true
+---
+
+## Precompiled Bootstrap
+
+Once downloaded, unzip the compressed folder and you'll see something like this:
+
+<!-- NOTE: This info is intentionally duplicated in the README. Copy any changes made here over to the README too, but be sure to keep in mind to add the `dist` folder. -->
+
+{% highlight plaintext %}
+bootstrap/
+├── css/
+│   ├── bootstrap-grid.css
+│   ├── bootstrap-grid.css.map
+│   ├── bootstrap-grid.min.css
+│   ├── bootstrap-grid.min.css.map
+│   ├── bootstrap-reboot.css
+│   ├── bootstrap-reboot.css.map
+│   ├── bootstrap-reboot.min.css
+│   ├── bootstrap-reboot.min.css.map
+│   ├── bootstrap.css
+│   ├── bootstrap.css.map
+│   ├── bootstrap.min.css
+│   └── bootstrap.min.css.map
+└── js/
+    ├── bootstrap.bundle.js
+    ├── bootstrap.bundle.js.map
+    ├── bootstrap.bundle.min.js
+    ├── bootstrap.bundle.min.js.map
+    ├── bootstrap.js
+    ├── bootstrap.js.map
+    ├── bootstrap.min.js
+    └── bootstrap.min.js.map
+{% endhighlight %}
+
+This is the most basic form of Bootstrap: precompiled files for quick drop-in usage in nearly any web project. We provide compiled CSS and JS (`bootstrap.*`), as well as compiled and minified CSS and JS (`bootstrap.min.*`). [source maps](https://developers.google.com/web/tools/chrome-devtools/javascript/source-maps) (`bootstrap.*.map`) are available for use with certain browsers' developer tools. Bundled JS files (`bootstrap.bundle.js` and minified `bootstrap.bundle.min.js`) include [Popper](https://popper.js.org/), but not [jQuery](https://jquery.com/).
+
+## CSS files
+
+Bootstrap includes a handful of options for including some or all of our compiled CSS.
+
+<table class="table table-bordered">
+  <thead>
+    <tr>
+      <th scope="col">CSS files</th>
+      <th scope="col">Layout</th>
+      <th scope="col">Content</th>
+      <th scope="col">Components</th>
+      <th scope="col">Utilities</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">
+        <div><code class="font-weight-normal text-nowrap">bootstrap.css</code></div>
+        <div><code class="font-weight-normal text-nowrap">bootstrap.min.css</code></div>
+      </th>
+      <td class="text-success">Included</td>
+      <td class="text-success">Included</td>
+      <td class="text-success">Included</td>
+      <td class="text-success">Included</td>
+    </tr>
+    <tr>
+      <th scope="row">
+        <div><code class="font-weight-normal text-nowrap">bootstrap-grid.css</code></div>
+        <div><code class="font-weight-normal text-nowrap">bootstrap-grid.min.css</code></div>
+      </th>
+      <td><a class="text-warning" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/layout/grid/">Only grid system</a></td>
+      <td class="bg-light text-muted">Not included</td>
+      <td class="bg-light text-muted">Not included</td>
+      <td><a class="text-warning" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/">Only flex utilities</a></td>
+    </tr>
+    <tr>
+      <th scope="row">
+        <div><code class="font-weight-normal text-nowrap">bootstrap-reboot.css</code></div>
+        <div><code class="font-weight-normal text-nowrap">bootstrap-reboot.min.css</code></div>
+      </th>
+      <td class="bg-light text-muted">Not included</td>
+      <td><a class="text-warning" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/content/reboot/">Only Reboot</a></td>
+      <td class="bg-light text-muted">Not included</td>
+      <td class="bg-light text-muted">Not included</td>
+    </tr>
+  </tbody>
+</table>
+
+## JS files
+
+Similarly, we have options for including some or all of our compiled JavaScript.
+
+<table class="table table-bordered">
+  <thead>
+    <tr>
+      <th scope="col">JS files</th>
+      <th scope="col">Popper</th>
+      <th scope="col">jQuery</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">
+        <div><code class="font-weight-normal text-nowrap">bootstrap.bundle.js</code></div>
+        <div><code class="font-weight-normal text-nowrap">bootstrap.bundle.min.js</code></div>
+      </th>
+      <td class="text-success">Included</td>
+      <td class="bg-light text-muted">Not included</td>
+    </tr>
+    <tr>
+      <th scope="row">
+        <div><code class="font-weight-normal text-nowrap">bootstrap.js</code></div>
+        <div><code class="font-weight-normal text-nowrap">bootstrap.min.js</code></div>
+      </th>
+      <td class="bg-light text-muted">Not included</td>
+      <td class="bg-light text-muted">Not included</td>
+    </tr>
+  </tbody>
+</table>
+
+## Bootstrap source code
+
+The Bootstrap source code download includes the precompiled CSS and JavaScript assets, along with source Sass, JavaScript, and documentation. More specifically, it includes the following and more:
+
+{% highlight plaintext %}
+bootstrap/
+├── dist/
+│   ├── css/
+│   └── js/
+├── docs/
+│   └── examples/
+├── js/
+└── scss/
+{% endhighlight %}
+
+The `scss/` and `js/` are the source code for our CSS and JavaScript. The `dist/` folder includes everything listed in the precompiled download section above. The `docs/` folder includes the source code for our documentation, and `examples/` of Bootstrap usage. Beyond that, any other included file provides support for packages, license information, and development.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/download.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/download.md
new file mode 100644
index 000000000..e0845564c
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/download.md
@@ -0,0 +1,100 @@
+---
+layout: docs
+title: Download
+description: Download Bootstrap to get the compiled CSS and JavaScript, source code, or include it with your favorite package managers like npm, RubyGems, and more.
+group: getting-started
+toc: true
+---
+
+## Compiled CSS and JS
+
+Download ready-to-use compiled code for **Bootstrap v{{ site.current_version}}** to easily drop into your project, which includes:
+
+- Compiled and minified CSS bundles (see [CSS files comparison]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/contents/#css-files))
+- Compiled and minified JavaScript plugins
+
+This doesn't include documentation, source files, or any optional JavaScript dependencies (jQuery and Popper.js).
+
+<a href="{{ site.download.dist }}" class="btn btn-bd-primary" onclick="ga('send', 'event', 'Getting started', 'Download', 'Download Bootstrap');">Download</a>
+
+## Source files
+
+Compile Bootstrap with your own asset pipeline by downloading our source Sass, JavaScript, and documentation files. This option requires some additional tooling:
+
+- Sass compiler (Libsass or Ruby Sass is supported) for compiling your CSS.
+- [Autoprefixer](https://github.com/postcss/autoprefixer) for CSS vendor prefixing
+
+Should you require [build tools]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/build-tools/#tooling-setup), they are included for developing Bootstrap and its docs, but they're likely unsuitable for your own purposes.
+
+<a href="{{ site.download.source }}" class="btn btn-bd-primary" onclick="ga('send', 'event', 'Getting started', 'Download', 'Download source');">Download source</a>
+
+## BootstrapCDN
+
+Skip the download with [BootstrapCDN](https://www.bootstrapcdn.com/) to deliver cached version of Bootstrap's compiled CSS and JS to your project.
+
+{% highlight html %}
+<link rel="stylesheet" href="{{ site.cdn.css }}" integrity="{{ site.cdn.css_hash }}" crossorigin="anonymous">
+<script src="{{ site.cdn.js }}" integrity="{{ site.cdn.js_hash }}" crossorigin="anonymous"></script>
+{% endhighlight %}
+
+If you're using our compiled JavaScript, don't forget to include CDN versions of jQuery and Popper.js before it.
+
+{% highlight html %}
+<script src="{{ site.cdn.jquery }}" integrity="{{ site.cdn.jquery_hash }}" crossorigin="anonymous"></script>
+<script src="{{ site.cdn.popper }}" integrity="{{ site.cdn.popper_hash }}" crossorigin="anonymous"></script>
+{% endhighlight %}
+
+## Package managers
+
+Pull in Bootstrap's **source files** into nearly any project with some of the most popular package managers. No matter the package manager, Bootstrap will **require a Sass compiler and [Autoprefixer](https://github.com/postcss/autoprefixer)** for a setup that matches our official compiled versions.
+
+### npm
+
+Install Bootstrap in your Node.js powered apps with [the npm package](https://www.npmjs.com/package/bootstrap):
+
+{% highlight sh %}
+npm install bootstrap
+{% endhighlight %}
+
+`require('bootstrap')` will load all of Bootstrap's jQuery plugins onto the jQuery object. The `bootstrap` module itself does not export anything. You can manually load Bootstrap's jQuery plugins individually by loading the `/js/*.js` files under the package's top-level directory.
+
+Bootstrap's `package.json` contains some additional metadata under the following keys:
+
+- `sass` - path to Bootstrap's main [Sass](https://sass-lang.com/) source file
+- `style` - path to Bootstrap's non-minified CSS that's been precompiled using the default settings (no customization)
+
+### RubyGems
+
+Install Bootstrap in your Ruby apps using [Bundler](https://bundler.io/) (**recommended**) and [RubyGems](https://rubygems.org/) by adding the following line to your [`Gemfile`](https://bundler.io/gemfile.html):
+
+{% highlight ruby %}
+gem 'bootstrap', '~> {{ site.current_ruby_version }}'
+{% endhighlight %}
+
+Alternatively, if you're not using Bundler, you can install the gem by running this command:
+
+{% highlight sh %}
+gem install bootstrap -v {{ site.current_ruby_version }}
+{% endhighlight %}
+
+[See the gem's README](https://github.com/twbs/bootstrap-rubygem/blob/master/README.md) for further details.
+
+### Composer
+
+You can also install and manage Bootstrap's Sass and JavaScript using [Composer](https://getcomposer.org/):
+
+{% highlight sh %}
+composer require twbs/bootstrap:{{ site.current_version }}
+{% endhighlight %}
+
+### NuGet
+
+If you develop in .NET, you can also install and manage Bootstrap's [CSS](https://www.nuget.org/packages/bootstrap/) or [Sass](https://www.nuget.org/packages/bootstrap.sass/) and JavaScript using [NuGet](https://www.nuget.org/):
+
+{% highlight powershell %}
+Install-Package bootstrap
+{% endhighlight %}
+
+{% highlight powershell %}
+Install-Package bootstrap.sass
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/introduction.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/introduction.md
new file mode 100644
index 000000000..77a9a6fdf
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/introduction.md
@@ -0,0 +1,145 @@
+---
+layout: docs
+title: Introduction
+description: Get started with Bootstrap, the world's most popular framework for building responsive, mobile-first sites, with BootstrapCDN and a template starter page.
+group: getting-started
+redirect_from:
+  - /docs/
+  - /docs/4.1/
+  - /docs/4.1/getting-started/
+  - /docs/getting-started/
+toc: true
+---
+
+## Quick start
+
+Looking to quickly add Bootstrap to your project? Use BootstrapCDN, provided for free by the folks at StackPath. Using a package manager or need to download the source files? [Head to the downloads page.]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/)
+
+### CSS
+
+Copy-paste the stylesheet `<link>` into your `<head>` before all other stylesheets to load our CSS.
+
+{% highlight html %}
+<link rel="stylesheet" href="{{ site.cdn.css }}" integrity="{{ site.cdn.css_hash }}" crossorigin="anonymous">
+{% endhighlight %}
+
+### JS
+
+Many of our components require the use of JavaScript to function. Specifically, they require [jQuery](https://jquery.com), [Popper.js](https://popper.js.org/), and our own JavaScript plugins. Place the following `<script>`s near the end of your pages, right before the closing `</body>` tag, to enable them. jQuery must come first, then Popper.js, and then our JavaScript plugins.
+
+We use [jQuery's slim build](https://blog.jquery.com/2016/06/09/jquery-3-0-final-released/), but the full version is also supported.
+
+{% highlight html %}
+<script src="{{ site.cdn.jquery }}" integrity="{{ site.cdn.jquery_hash }}" crossorigin="anonymous"></script>
+<script src="{{ site.cdn.popper }}" integrity="{{ site.cdn.popper_hash }}" crossorigin="anonymous"></script>
+<script src="{{ site.cdn.js }}" integrity="{{ site.cdn.js_hash }}" crossorigin="anonymous"></script>
+{% endhighlight %}
+
+Curious which components explicitly require jQuery, our JS, and Popper.js? Click the show components link below. If you're at all unsure about the general page structure, keep reading for an example page template.
+
+Our `bootstrap.bundle.js` and `bootstrap.bundle.min.js` include [Popper](https://popper.js.org/), but not [jQuery](https://jquery.com/). For more information about what's included in Bootstrap, please see our [contents]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/contents/#precompiled-bootstrap) section.
+
+<details>
+<summary class="text-primary mb-3">Show components requiring JavaScript</summary>
+{% capture markdown %}
+- Alerts for dismissing
+- Buttons for toggling states and checkbox/radio functionality
+- Carousel for all slide behaviors, controls, and indicators
+- Collapse for toggling visibility of content
+- Dropdowns for displaying and positioning (also requires [Popper.js](https://popper.js.org/))
+- Modals for displaying, positioning, and scroll behavior
+- Navbar for extending our Collapse plugin to implement responsive behavior
+- Tooltips and popovers for displaying and positioning (also requires [Popper.js](https://popper.js.org/))
+- Scrollspy for scroll behavior and navigation updates
+{% endcapture %}
+{{ markdown | markdownify }}
+</details>
+
+## Starter template
+
+Be sure to have your pages set up with the latest design and development standards. That means using an HTML5 doctype and including a viewport meta tag for proper responsive behaviors. Put it all together and your pages should look like this:
+
+{% highlight html %}
+<!doctype html>
+<html lang="en">
+  <head>
+    <!-- Required meta tags -->
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Bootstrap CSS -->
+    <link rel="stylesheet" href="{{ site.cdn.css }}" integrity="{{ site.cdn.css_hash }}" crossorigin="anonymous">
+
+    <title>Hello, world!</title>
+  </head>
+  <body>
+    <h1>Hello, world!</h1>
+
+    <!-- Optional JavaScript -->
+    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
+    <script src="{{ site.cdn.jquery }}" integrity="{{ site.cdn.jquery_hash }}" crossorigin="anonymous"></script>
+    <script src="{{ site.cdn.popper }}" integrity="{{ site.cdn.popper_hash }}" crossorigin="anonymous"></script>
+    <script src="{{ site.cdn.js }}" integrity="{{ site.cdn.js_hash }}" crossorigin="anonymous"></script>
+  </body>
+</html>
+{% endhighlight %}
+
+That's all you need for overall page requirements. Visit the [Layout docs]({{ site.baseurl }}/docs/{{ site.docs_version }}/layout/overview/) or [our official examples]({{ site.baseurl }}/docs/{{ site.docs_version }}/examples/) to start laying out your site's content and components.
+
+## Important globals
+
+Bootstrap employs a handful of important global styles and settings that you'll need to be aware of when using it, all of which are almost exclusively geared towards the *normalization* of cross browser styles. Let's dive in.
+
+### HTML5 doctype
+
+Bootstrap requires the use of the HTML5 doctype. Without it, you'll see some funky incomplete styling, but including it shouldn't cause any considerable hiccups.
+
+{% highlight html %}
+<!doctype html>
+<html lang="en">
+  ...
+</html>
+{% endhighlight %}
+
+### Responsive meta tag
+
+Bootstrap is developed *mobile first*, a strategy in which we optimize code for mobile devices first and then scale up components as necessary using CSS media queries. To ensure proper rendering and touch zooming for all devices, **add the responsive viewport meta tag** to your `<head>`.
+
+{% highlight html %}
+<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+{% endhighlight %}
+
+You can see an example of this in action in the [starter template](#starter-template).
+
+### Box-sizing
+
+For more straightforward sizing in CSS, we switch the global `box-sizing` value from `content-box` to `border-box`. This ensures `padding` does not affect the final computed width of an element, but it can cause problems with some third party software like Google Maps and Google Custom Search Engine.
+
+On the rare occasion you need to override it, use something like the following:
+
+{% highlight css %}
+.selector-for-some-widget {
+  box-sizing: content-box;
+}
+{% endhighlight %}
+
+With the above snippet, nested elements—including generated content via `::before` and `::after`—will all inherit the specified `box-sizing` for that `.selector-for-some-widget`.
+
+Learn more about [box model and sizing at CSS Tricks](https://css-tricks.com/box-sizing/).
+
+### Reboot
+
+For improved cross-browser rendering, we use [Reboot]({{ site.baseurl }}/docs/{{ site.docs_version }}/content/reboot/) to correct inconsistencies across browsers and devices while providing slightly more opinionated resets to common HTML elements.
+
+## Community
+
+Stay up to date on the development of Bootstrap and reach out to the community with these helpful resources.
+
+- Follow [@getbootstrap on Twitter](https://twitter.com/getbootstrap).
+- Read and subscribe to [The Official Bootstrap Blog]({{ site.blog }}).
+- Join [the official Slack room]({{ site.slack }}).
+- Chat with fellow Bootstrappers in IRC. On the `irc.freenode.net` server, in the `##bootstrap` channel.
+- Implementation help may be found at Stack Overflow (tagged [`bootstrap-4`](https://stackoverflow.com/questions/tagged/bootstrap-4)).
+- Developers should use the keyword `bootstrap` on packages which modify or add to the functionality of Bootstrap when distributing through [npm](https://www.npmjs.com/browse/keyword/bootstrap) or similar delivery mechanisms for maximum discoverability.
+
+You can also follow [@getbootstrap on Twitter](https://twitter.com/getbootstrap) for the latest gossip and awesome music videos.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/javascript.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/javascript.md
new file mode 100644
index 000000000..20500c2af
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/javascript.md
@@ -0,0 +1,136 @@
+---
+layout: docs
+title: JavaScript
+description: Bring Bootstrap to life with our optional JavaScript plugins built on jQuery. Learn about each plugin, our data and programmatic API options, and more.
+group: getting-started
+toc: true
+---
+
+## Individual or compiled
+
+Plugins can be included individually (using Bootstrap's individual `js/dist/*.js`), or all at once using `bootstrap.js` or the minified `bootstrap.min.js` (don't include both).
+
+If you use a bundler (Webpack, Rollup...), you can use `/js/dist/*.js` files which are UMD ready.
+
+## Dependencies
+
+Some plugins and CSS components depend on other plugins. If you include plugins individually, make sure to check for these dependencies in the docs. Also note that **all plugins depend on jQuery** (this means jQuery must be included **before** the plugin files). [Consult our `package.json`]({{ site.repo }}/blob/v{{ site.current_version }}/package.json) to see which versions of jQuery are supported.
+
+Our dropdowns, popovers and tooltips also depend on [Popper.js](https://popper.js.org/).
+
+## Data attributes
+
+Nearly all Bootstrap plugins can be enabled and configured through HTML alone with data attributes (our preferred way of using JavaScript functionality). Be sure to **only use one set of data attributes on a single element** (e.g., you cannot trigger a tooltip and modal from the same button.)
+
+However, in some situations it may be desirable to disable this functionality. To disable the data attribute API, unbind all events on the document namespaced with `data-api` like so:
+
+{% highlight js %}
+$(document).off('.data-api')
+{% endhighlight %}
+
+Alternatively, to target a specific plugin, just include the plugin's name as a namespace along with the data-api namespace like this:
+
+{% highlight js %}
+$(document).off('.alert.data-api')
+{% endhighlight %}
+
+{% capture callout %}
+##### Escaping selectors
+If you use special selectors, for example: `collapse:Example`, be sure to escape them, because they'll be passed through jQuery.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+## Events
+
+Bootstrap provides custom events for most plugins' unique actions. Generally, these come in an infinitive and past participle form - where the infinitive (ex. `show`) is triggered at the start of an event, and its past participle form (ex. `shown`) is triggered on the completion of an action.
+
+All infinitive events provide [`preventDefault()`](https://developer.mozilla.org/en-US/docs/Web/API/Event/preventDefault) functionality. This provides the ability to stop the execution of an action before it starts. Returning false from an event handler will also automatically call `preventDefault()`.
+
+{% highlight js %}
+$('#myModal').on('show.bs.modal', function (e) {
+  if (!data) return e.preventDefault() // stops modal from being shown
+})
+{% endhighlight %}
+
+## Programmatic API
+
+We also believe you should be able to use all Bootstrap plugins purely through the JavaScript API. All public APIs are single, chainable methods, and return the collection acted upon.
+
+{% highlight js %}
+$('.btn.danger').button('toggle').addClass('fat')
+{% endhighlight %}
+
+All methods should accept an optional options object, a string which targets a particular method, or nothing (which initiates a plugin with default behavior):
+
+{% highlight js %}
+$('#myModal').modal()                      // initialized with defaults
+$('#myModal').modal({ keyboard: false })   // initialized with no keyboard
+$('#myModal').modal('show')                // initializes and invokes show immediately
+{% endhighlight %}
+
+Each plugin also exposes its raw constructor on a `Constructor` property: `$.fn.popover.Constructor`. If you'd like to get a particular plugin instance, retrieve it directly from an element: `$('[rel="popover"]').data('popover')`.
+
+### Asynchronous functions and transitions
+
+All programmatic API methods are **asynchronous** and returns to the caller once the transition is started but **before it ends**.
+
+In order to execute an action once the transition is complete, you can listen to the corresponding event.
+
+{% highlight js %}
+$('#myCollapse').on('shown.bs.collapse', function (e) {
+  // Action to execute once the collapsible area is expanded
+})
+{% endhighlight %}
+
+In addition a method call on a **transitioning component will be ignored**.
+
+{% highlight js %}
+$('#myCarousel').on('slid.bs.carousel', function (e) {
+  $('#myCarousel').carousel('2') // Will slide to the slide 2 as soon as the transition to slide 1 is finished
+})
+
+$('#myCarousel').carousel('1') // Will start sliding to the slide 1 and returns to the caller
+$('#myCarousel').carousel('2') // !! Will be ignored, as the transition to the slide 1 is not finished !!
+{% endhighlight %}
+
+### Default settings
+
+You can change the default settings for a plugin by modifying the plugin's `Constructor.Default` object:
+
+{% highlight js %}
+$.fn.modal.Constructor.Default.keyboard = false // changes default for the modal plugin's `keyboard` option to false
+{% endhighlight %}
+
+## No conflict
+
+Sometimes it is necessary to use Bootstrap plugins with other UI frameworks. In these circumstances, namespace collisions can occasionally occur. If this happens, you may call `.noConflict` on the plugin you wish to revert the value of.
+
+{% highlight js %}
+var bootstrapButton = $.fn.button.noConflict() // return $.fn.button to previously assigned value
+$.fn.bootstrapBtn = bootstrapButton            // give $().bootstrapBtn the Bootstrap functionality
+{% endhighlight %}
+
+## Version numbers
+
+The version of each of Bootstrap's jQuery plugins can be accessed via the `VERSION` property of the plugin's constructor. For example, for the tooltip plugin:
+
+{% highlight js %}
+$.fn.tooltip.Constructor.VERSION // => "{{ site.current_version }}"
+{% endhighlight %}
+
+## No special fallbacks when JavaScript is disabled
+
+Bootstrap's plugins don't fall back particularly gracefully when JavaScript is disabled. If you care about the user experience in this case, use [`<noscript>`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/noscript) to explain the situation (and how to re-enable JavaScript) to your users, and/or add your own custom fallbacks.
+
+{% capture callout %}
+##### Third-party libraries
+
+**Bootstrap does not officially support third-party JavaScript libraries** like Prototype or jQuery UI. Despite `.noConflict` and namespaced events, there may be compatibility problems that you need to fix on your own.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+## Util
+
+All Bootstrap's JavaScript files depend on `util.js` and it has to be included alongside the other JavaScript files. If you're using the compiled (or minified) `bootstrap.js`, there is no need to include this—it's already there.
+
+`util.js` includes utility functions and a basic helper for `transitionEnd` events as well as a CSS transition emulator. It's used by the other plugins to check for CSS transition support and to catch hanging transitions.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/theming.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/theming.md
new file mode 100644
index 000000000..192e819bc
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/theming.md
@@ -0,0 +1,442 @@
+---
+layout: docs
+title: Theming Bootstrap
+description: Customize Bootstrap 4 with our new built-in Sass variables for global style preferences for easy theming and component changes.
+group: getting-started
+toc: true
+redirect_from: "/docs/4.1/getting-started/options/"
+---
+
+## Introduction
+
+In Bootstrap 3, theming was largely driven by variable overrides in LESS, custom CSS, and a separate theme stylesheet that we included in our `dist` files. With some effort, one could completely redesign the look of Bootstrap 3 without touching the core files. Bootstrap 4 provides a familiar, but slightly different approach.
+
+Now, theming is accomplished by Sass variables, Sass maps, and custom CSS. There's no more dedicated theme stylesheet; instead, you can enable the built-in theme to add gradients, shadows, and more.
+
+## Sass
+
+Utilize our source Sass files to take advantage of variables, maps, mixins, and more.
+
+### File structure
+
+Whenever possible, avoid modifying Bootstrap's core files. For Sass, that means creating your own stylesheet that imports Bootstrap so you can modify and extend it. Assuming you're using a package manager like npm, you'll have a file structure that looks like this:
+
+{% highlight plaintext %}
+your-project/
+├── scss
+│   └── custom.scss
+└── node_modules/
+    └── bootstrap
+        ├── js
+        └── scss
+{% endhighlight %}
+
+If you've downloaded our source files and aren't using a package manager, you'll want to manually setup something similar to that structure, keeping Bootstrap's source files separate from your own.
+
+{% highlight plaintext %}
+your-project/
+├── scss
+│   └── custom.scss
+└── bootstrap/
+    ├── js
+    └── scss
+{% endhighlight %}
+
+### Importing
+
+In your `custom.scss`, you'll import Bootstrap's source Sass files. You have two options: include all of Bootstrap, or pick the parts you need. We encourage the latter, though be aware there are some requirements and dependencies across our components. You also will need to include some JavaScript for our plugins.
+
+{% highlight scss %}
+// Custom.scss
+// Option A: Include all of Bootstrap
+
+@import "../node_modules/bootstrap/scss/bootstrap";
+{% endhighlight %}
+
+{% highlight scss %}
+// Custom.scss
+// Option B: Include parts of Bootstrap
+
+// Required
+@import "../node_modules/bootstrap/scss/functions";
+@import "../node_modules/bootstrap/scss/variables";
+@import "../node_modules/bootstrap/scss/mixins";
+
+// Optional
+@import "../node_modules/bootstrap/scss/reboot";
+@import "../node_modules/bootstrap/scss/type";
+@import "../node_modules/bootstrap/scss/images";
+@import "../node_modules/bootstrap/scss/code";
+@import "../node_modules/bootstrap/scss/grid";
+{% endhighlight %}
+
+With that setup in place, you can begin to modify any of the Sass variables and maps in your `custom.scss`. You can also start to add parts of Bootstrap under the `// Optional` section as needed. We suggest using the full import stack from our `bootstrap.scss` file as your starting point.
+
+### Variable defaults
+
+Every Sass variable in Bootstrap 4 includes the `!default` flag allowing you to override the variable's default value in your own Sass without modifying Bootstrap's source code. Copy and paste variables as needed, modify their values, and remove the `!default` flag. If a variable has already been assigned, then it won't be re-assigned by the default values in Bootstrap.
+
+You will find the complete list of Bootstrap's variables in `scss/_variables.scss`.
+
+Variable overrides within the same Sass file can come before or after the default variables. However, when overriding across Sass files, your overrides must come before you import Bootstrap's Sass files.
+
+Here's an example that changes the `background-color` and `color` for the `<body>` when importing and compiling Bootstrap via npm:
+
+{% highlight scss %}
+// Your variable overrides
+$body-bg: #000;
+$body-color: #111;
+
+// Bootstrap and its default variables
+@import "../node_modules/bootstrap/scss/bootstrap";
+{% endhighlight %}
+
+Repeat as necessary for any variable in Bootstrap, including the global options below.
+
+### Maps and loops
+
+Bootstrap 4 includes a handful of Sass maps, key value pairs that make it easier to generate families of related CSS. We use Sass maps for our colors, grid breakpoints, and more. Just like Sass variables, all Sass maps include the `!default` flag and can be overridden and extended.
+
+Some of our Sass maps are merged into empty ones by default. This is done to allow easy expansion of a given Sass map, but comes at the cost of making _removing_ items from a map slightly more difficult.
+
+#### Modify map
+
+To modify an existing color in our `$theme-colors` map, add the following to your custom Sass file:
+
+{% highlight scss %}
+$theme-colors: (
+  "primary": #0074d9,
+  "danger": #ff4136
+);
+{% endhighlight %}
+
+#### Add to map
+
+To add a new color to `$theme-colors`, add the new key and value:
+
+{% highlight scss %}
+$theme-colors: (
+  "custom-color": #900
+);
+{% endhighlight %}
+
+#### Remove from map
+
+To remove colors from `$theme-colors`, or any other map, use `map-remove`. Be aware you must insert it between our requirements and options:
+
+{% highlight scss %}
+// Required
+@import "../node_modules/bootstrap/scss/functions";
+@import "../node_modules/bootstrap/scss/variables";
+@import "../node_modules/bootstrap/scss/mixins";
+
+$theme-colors: map-remove($theme-colors, "info", "light", "dark");
+
+// Optional
+@import "../node_modules/bootstrap/scss/root";
+@import "../node_modules/bootstrap/scss/reboot";
+@import "../node_modules/bootstrap/scss/type";
+...
+{% endhighlight %}
+
+#### Required keys
+
+Bootstrap assumes the presence of some specific keys within Sass maps as we used and extend these ourselves. As you customize the included maps, you may encounter errors where a specific Sass map's key is being used.
+
+For example, we use the `primary`, `success`, and `danger` keys from `$theme-colors` for links, buttons, and form states. Replacing the values of these keys should present no issues, but removing them may cause Sass compilation issues. In these instances, you'll need to modify the Sass code that makes use of those values.
+
+### Functions
+
+Bootstrap utilizes several Sass functions, but only a subset are applicable to general theming. We've included three functions for getting values from the color maps:
+
+{% highlight scss %}
+@function color($key: "blue") {
+  @return map-get($colors, $key);
+}
+
+@function theme-color($key: "primary") {
+  @return map-get($theme-colors, $key);
+}
+
+@function gray($key: "100") {
+  @return map-get($grays, $key);
+}
+{% endhighlight %}
+
+These allow you to pick one color from a Sass map much like how you'd use a color variable from v3.
+
+{% highlight scss %}
+.custom-element {
+  color: gray("100");
+  background-color: theme-color("dark");
+}
+{% endhighlight %}
+
+We also have another function for getting a particular _level_ of color from the `$theme-colors` map. Negative level values will lighten the color, while higher levels will darken.
+
+{% highlight scss %}
+@function theme-color-level($color-name: "primary", $level: 0) {
+  $color: theme-color($color-name);
+  $color-base: if($level > 0, #000, #fff);
+  $level: abs($level);
+
+  @return mix($color-base, $color, $level * $theme-color-interval);
+}
+{% endhighlight %}
+
+In practice, you'd call the function and pass in two parameters: the name of the color from `$theme-colors` (e.g., primary or danger) and a numeric level.
+
+{% highlight scss %}
+.custom-element {
+  color: theme-color-level(primary, -10);
+}
+{% endhighlight %}
+
+Additional functions could be added in the future or your own custom Sass to create level functions for additional Sass maps, or even a generic one if you wanted to be more verbose.
+
+### Color contrast
+
+One additional function we include in Bootstrap is the color contrast function, `color-yiq`. It utilizes the [YIQ color space](https://en.wikipedia.org/wiki/YIQ) to automatically return a light (`#fff`) or dark (`#111`) contrast color based on the specified base color. This function is especially useful for mixins or loops where you're generating multiple classes.
+
+For example, to generate color swatches from our `$theme-colors` map:
+
+{% highlight scss %}
+@each $color, $value in $theme-colors {
+  .swatch-#{$color} {
+    color: color-yiq($value);
+  }
+}
+{% endhighlight %}
+
+It can also be used for one-off contrast needs:
+
+{% highlight scss %}
+.custom-element {
+  color: color-yiq(#000); // returns `color: #fff`
+}
+{% endhighlight %}
+
+You can also specify a base color with our color map functions:
+
+{% highlight scss %}
+.custom-element {
+  color: color-yiq(theme-color("dark")); // returns `color: #fff`
+}
+{% endhighlight %}
+
+## Sass options
+
+Customize Bootstrap 4 with our built-in custom variables file and easily toggle global CSS preferences with new `$enable-*` Sass variables. Override a variable's value and recompile with `npm run test` as needed.
+
+You can find and customize these variables for key global options in Bootstrap's `scss/_variables.scss` file.
+
+| Variable                    | Values                             | Description                                                                            |
+| --------------------------- | ---------------------------------- | -------------------------------------------------------------------------------------- |
+| `$spacer`                   | `1rem` (default), or any value > 0 | Specifies the default spacer value to programmatically generate our [spacer utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/). |
+| `$enable-rounded`           | `true` (default) or `false`        | Enables predefined `border-radius` styles on various components. |
+| `$enable-shadows`           | `true` or `false` (default)        | Enables predefined `box-shadow` styles on various components. |
+| `$enable-gradients`         | `true` or `false` (default)        | Enables predefined gradients via `background-image` styles on various components. |
+| `$enable-transitions`       | `true` (default) or `false`        | Enables predefined `transition`s on various components. |
+| `$enable-hover-media-query` | `true` or `false` (default)        | **Deprecated** |
+| `$enable-grid-classes`      | `true` (default) or `false`        | Enables the generation of CSS classes for the grid system (e.g., `.container`, `.row`, `.col-md-1`, etc.). |
+| `$enable-caret`             | `true` (default) or `false`        | Enables pseudo element caret on `.dropdown-toggle`. |
+| `$enable-print-styles`      | `true` (default) or `false`        | Enables styles for optimizing printing. |
+
+## Color
+
+Many of Bootstrap's various components and utilities are built through a series of colors defined in a Sass map. This map can be looped over in Sass to quickly generate a series of rulesets.
+
+### All colors
+
+All colors available in Bootstrap 4, are available as Sass variables and a Sass map in `scss/_variables.scss` file. This will be expanded upon in subsequent minor releases to add additional shades, much like the [grayscale palette](#grays) we already include.
+
+<div class="row">
+  {% for color in site.data.colors %}
+    {% unless color.name == "white" or color.name == "gray" or color.name == "gray-dark" %}
+    <div class="col-md-4">
+        <div class="p-3 mb-3 swatch-{{ color.name }}">{{ color.name | capitalize }}</div>
+    </div>
+    {% endunless %}
+  {% endfor %}
+</div>
+
+Here's how you can use these in your Sass:
+
+{% highlight scss %}
+// With variable
+.alpha { color: $purple; }
+
+// From the Sass map with our `color()` function
+.beta { color: color("purple"); }
+{% endhighlight %}
+
+[Color utility classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/colors/) are also available for setting `color` and `background-color`.
+
+{% capture callout %}
+In the future, we'll aim to provide Sass maps and variables for shades of each color as we've done with the grayscale colors below.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+### Theme colors
+
+We use a subset of all colors to create a smaller color palette for generating color schemes, also available as Sass variables and a Sass map in Bootstraps's `scss/_variables.scss` file.
+
+<div class="row">
+  {% for color in site.data.theme-colors %}
+    <div class="col-md-4">
+      <div class="p-3 mb-3 swatch-{{ color.name }}">{{ color.name | capitalize }}</div>
+    </div>
+  {% endfor %}
+</div>
+
+### Grays
+
+An expansive set of gray variables and a Sass map in `scss/_variables.scss` for consistent shades of gray across your project.
+
+<div class="row mb-3">
+  <div class="col-md-4">
+    {% for color in site.data.grays %}
+      <div class="p-3 swatch-{{ color.name }}">{{ color.name | capitalize }}</div>
+    {% endfor %}
+  </div>
+</div>
+
+Within `scss/_variables.scss`, you'll find Bootstrap's color variables and Sass map. Here's an example of the `$colors` Sass map:
+
+{% highlight scss %}
+$colors: (
+  "blue": $blue,
+  "indigo": $indigo,
+  "purple": $purple,
+  "pink": $pink,
+  "red": $red,
+  "orange": $orange,
+  "yellow": $yellow,
+  "green": $green,
+  "teal": $teal,
+  "cyan": $cyan,
+  "white": $white,
+  "gray": $gray-600,
+  "gray-dark": $gray-800
+) !default;
+{% endhighlight %}
+
+Add, remove, or modify values within the map to update how they're used in many other components. Unfortunately at this time, not _every_ component utilizes this Sass map. Future updates will strive to improve upon this. Until then, plan on making use of the `${color}` variables and this Sass map.
+
+## Components
+
+Many of Bootstrap's components and utilities are built with `@each` loops that iterate over a Sass map. This is especially helpful for generating variants of a component by our `$theme-colors` and creating responsive variants for each breakpoint. As you customize these Sass maps and recompile, you'll automatically see your changes reflected in these loops.
+
+### Modifiers
+
+Many of Bootstrap's components are built with a base-modifier class approach. This means the bulk of the styling is contained to a base class (e.g., `.btn`) while style variations are confined to modifier classes (e.g., `.btn-danger`). These modifier classes are built from the `$theme-colors` map to make customizing the number and name of our modifier classes.
+
+Here are two examples of how we loop over the `$theme-colors` map to generate modifiers to the `.alert` component and all our `.bg-*` background utilities.
+
+{% highlight scss %}
+// Generate alert modifier classes
+@each $color, $value in $theme-colors {
+  .alert-#{$color} {
+    @include alert-variant(theme-color-level($color, -10), theme-color-level($color, -9), theme-color-level($color, 6));
+  }
+}
+
+// Generate `.bg-*` color utilities
+@each $color, $value in $theme-colors {
+  @include bg-variant('.bg-#{$color}', $value);
+}
+{% endhighlight %}
+
+### Responsive
+
+These Sass loops aren't limited to color maps, either. You can also generate responsive variations of your components or utilities. Take for example our responsive text alignment utilities where we mix an `@each` loop for the `$grid-breakpoints` Sass map with a media query include.
+
+{% highlight scss %}
+@each $breakpoint in map-keys($grid-breakpoints) {
+  @include media-breakpoint-up($breakpoint) {
+    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
+
+    .text#{$infix}-left   { text-align: left !important; }
+    .text#{$infix}-right  { text-align: right !important; }
+    .text#{$infix}-center { text-align: center !important; }
+  }
+}
+{% endhighlight %}
+
+Should you need to modify your `$grid-breakpoints`, your changes will apply to all the loops iterating over that map.
+
+## CSS variables
+
+Bootstrap 4 includes around two dozen [CSS custom properties (variables)](https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_variables) in its compiled CSS. These provide easy access to commonly used values like our theme colors, breakpoints, and primary font stacks when working in your browser's Inspector, a code sandbox, or general prototyping.
+
+### Available variables
+
+Here are the variables we include (note that the `:root` is required). They're located in our `_root.scss` file.
+
+{% highlight css %}
+:root {
+  --blue: #007bff;
+  --indigo: #6610f2;
+  --purple: #6f42c1;
+  --pink: #e83e8c;
+  --red: #dc3545;
+  --orange: #fd7e14;
+  --yellow: #ffc107;
+  --green: #28a745;
+  --teal: #20c997;
+  --cyan: #17a2b8;
+  --white: #fff;
+  --gray: #6c757d;
+  --gray-dark: #343a40;
+  --primary: #007bff;
+  --secondary: #6c757d;
+  --success: #28a745;
+  --info: #17a2b8;
+  --warning: #ffc107;
+  --danger: #dc3545;
+  --light: #f8f9fa;
+  --dark: #343a40;
+  --breakpoint-xs: 0;
+  --breakpoint-sm: 576px;
+  --breakpoint-md: 768px;
+  --breakpoint-lg: 992px;
+  --breakpoint-xl: 1200px;
+  --font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+  --font-family-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
+}
+{% endhighlight %}
+
+### Examples
+
+CSS variables offer similar flexibility to Sass's variables, but without the need for compilation before being served to the browser. For example, here we're resetting our page's font and link styles with CSS variables.
+
+{% highlight css %}
+body {
+  font: 1rem/1.5 var(--font-family-sans-serif);
+}
+a {
+  color: var(--blue);
+}
+{% endhighlight %}
+
+### Breakpoint variables
+
+While we originally included breakpoints in our CSS variables (e.g., `--breakpoint-md`), **these are not supported in media queries**, but they can still be used _within_ rulesets in media queries. These breakpoint variables remain in the compiled CSS for backward compatibility given they can be utilized by JavaScript. [Learn more in the spec.](https://www.w3.org/TR/css-variables-1/#using-variables)
+
+Here's an example of **what's not supported:**
+
+{% highlight css %}
+@media (min-width: var(--breakpoint-sm)) {
+  ...
+}
+{% endhighlight %}
+
+And here's an example of **what is supported:**
+
+{% highlight css %}
+@media (min-width: 768px) {
+  .custom-element {
+    color: var(--primary);
+  }
+}
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/getting-started/webpack.md b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/webpack.md
new file mode 100644
index 000000000..59211b075
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/getting-started/webpack.md
@@ -0,0 +1,94 @@
+---
+layout: docs
+title: Webpack
+description: Learn how to include Bootstrap in your project using Webpack 3.
+group: getting-started
+toc: true
+---
+
+## Installing Bootstrap
+
+[Install bootstrap]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/#npm) as a Node.js module using npm.
+
+## Importing JavaScript
+
+Import [Bootstrap's JavaScript]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/) by adding this line to your app's entry point (usually `index.js` or `app.js`):
+
+{% highlight js %}
+import 'bootstrap';
+{% endhighlight %}
+
+Alternatively, you may **import plugins individually** as needed:
+
+{% highlight js %}
+import 'bootstrap/js/dist/util';
+import 'bootstrap/js/dist/alert';
+...
+{% endhighlight %}
+
+Bootstrap is dependent on [jQuery](https://jquery.com/) and [Popper](https://popper.js.org/),
+these are defined as `peerDependencies`, this means that you will have to make sure to add both of them
+to your `package.json` using `npm install --save jquery popper.js`.
+
+## Importing Styles
+
+### Importing Precompiled Sass
+
+To enjoy the full potential of Bootstrap and customize it to your needs, use the source files as a part of your project's bundling process.
+
+First, create your own `_custom.scss` and use it to override the [built-in custom variables]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/options/). Then, use your main Sass file to import your custom variables, followed by Bootstrap:
+
+{% highlight scss %}
+@import "custom";
+@import "~bootstrap/scss/bootstrap";
+{% endhighlight %}
+
+For Bootstrap to compile, make sure you install and use the required loaders: [sass-loader](https://github.com/webpack-contrib/sass-loader), [postcss-loader](https://github.com/postcss/postcss-loader) with [Autoprefixer](https://github.com/postcss/autoprefixer#webpack). With minimal setup, your webpack config should include this rule or similar:
+
+{% highlight js %}
+  ...
+  {
+    test: /\.(scss)$/,
+    use: [{
+      loader: 'style-loader', // inject CSS to page
+    }, {
+      loader: 'css-loader', // translates CSS into CommonJS modules
+    }, {
+      loader: 'postcss-loader', // Run post css actions
+      options: {
+        plugins: function () { // post css plugins, can be exported to postcss.config.js
+          return [
+            require('precss'),
+            require('autoprefixer')
+          ];
+        }
+      }
+    }, {
+      loader: 'sass-loader' // compiles Sass to CSS
+    }]
+  },
+  ...
+{% endhighlight %}
+
+### Importing Compiled CSS
+
+Alternatively, you may use Bootstrap's ready-to-use CSS by simply adding this line to your project's entry point:
+
+{% highlight js %}
+import 'bootstrap/dist/css/bootstrap.min.css';
+{% endhighlight %}
+
+In this case you may use your existing rule for `css` without any special modifications to webpack config, except you don't need `sass-loader` just [style-loader](https://github.com/webpack-contrib/style-loader) and [css-loader](https://github.com/webpack-contrib/css-loader).
+
+{% highlight js %}
+  ...
+  module: {
+    rules: [
+      {
+        test: /\.css$/,
+        use: ['style-loader', 'css-loader']
+      }
+    ]
+  }
+  ...
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/layout/grid.md b/vendor/twbs/bootstrap/site/docs/4.1/layout/grid.md
new file mode 100644
index 000000000..e697517d7
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/layout/grid.md
@@ -0,0 +1,790 @@
+---
+layout: docs
+title: Grid system
+description: Use our powerful mobile-first flexbox grid to build layouts of all shapes and sizes thanks to a twelve column system, five default responsive tiers, Sass variables and mixins, and dozens of predefined classes.
+group: layout
+toc: true
+---
+
+## How it works
+
+Bootstrap's grid system uses a series of containers, rows, and columns to layout and align content. It's built with [flexbox](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Flexible_Box_Layout/Basic_Concepts_of_Flexbox) and is fully responsive. Below is an example and an in-depth look at how the grid comes together.
+
+**New to or unfamiliar with flexbox?** [Read this CSS Tricks flexbox guide](https://css-tricks.com/snippets/css/a-guide-to-flexbox/#flexbox-background) for background, terminology, guidelines, and code snippets.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row">
+    <div class="col-sm">
+      One of three columns
+    </div>
+    <div class="col-sm">
+      One of three columns
+    </div>
+    <div class="col-sm">
+      One of three columns
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+The above example creates three equal-width columns on small, medium, large, and extra large devices using our predefined grid classes. Those columns are centered in the page with the parent `.container`.
+
+Breaking it down, here's how it works:
+
+- Containers provide a means to center and horizontally pad your site's contents. Use `.container` for a responsive pixel width or `.container-fluid` for `width: 100%` across all viewport and device sizes.
+- Rows are wrappers for columns. Each column has horizontal `padding` (called a gutter) for controlling the space between them. This `padding` is then counteracted on the rows with negative margins. This way, all the content in your columns is visually aligned down the left side.
+- In a grid layout, content must be placed within columns and only columns may be immediate children of rows.
+- Thanks to flexbox, grid columns without a specified `width` will automatically layout as equal width columns. For example, four instances of `.col-sm` will each automatically be 25% wide from the small breakpoint and up. See the [auto-layout columns](#auto-layout-columns) section for more examples.
+- Column classes indicate the number of columns you'd like to use out of the possible 12 per row. So, if you want three equal-width columns across, you can use `.col-4`.
+- Column `width`s are set in percentages, so they're always fluid and sized relative to their parent element.
+- Columns have horizontal `padding` to create the gutters between individual columns, however, you can remove the `margin` from rows and `padding` from columns with `.no-gutters` on the `.row`.
+- To make the grid responsive, there are five grid breakpoints, one for each [responsive breakpoint]({{ site.baseurl }}/docs/{{ site.docs_version }}/layout/overview/#responsive-breakpoints): all breakpoints (extra small), small, medium, large, and extra large.
+- Grid breakpoints are based on minimum width media queries, meaning **they apply to that one breakpoint and all those above it** (e.g., `.col-sm-4` applies to small, medium, large, and extra large devices, but not the first `xs` breakpoint).
+- You can use predefined grid classes (like `.col-4`) or [Sass mixins](#sass-mixins) for more semantic markup.
+
+Be aware of the limitations and [bugs around flexbox](https://github.com/philipwalton/flexbugs), like the [inability to use some HTML elements as flex containers](https://github.com/philipwalton/flexbugs#flexbug-9).
+
+## Grid options
+
+While Bootstrap uses `em`s or `rem`s for defining most sizes, `px`s are used for grid breakpoints and container widths. This is because the viewport width is in pixels and does not change with the [font size](https://drafts.csswg.org/mediaqueries-3/#units).
+
+See how aspects of the Bootstrap grid system work across multiple devices with a handy table.
+
+<table class="table table-bordered table-striped">
+  <thead>
+    <tr>
+      <th></th>
+      <th class="text-center">
+        Extra small<br>
+        <small>&lt;576px</small>
+      </th>
+      <th class="text-center">
+        Small<br>
+        <small>&ge;576px</small>
+      </th>
+      <th class="text-center">
+        Medium<br>
+        <small>&ge;768px</small>
+      </th>
+      <th class="text-center">
+        Large<br>
+        <small>&ge;992px</small>
+      </th>
+      <th class="text-center">
+        Extra large<br>
+        <small>&ge;1200px</small>
+      </th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th class="text-nowrap" scope="row">Max container width</th>
+      <td>None (auto)</td>
+      <td>540px</td>
+      <td>720px</td>
+      <td>960px</td>
+      <td>1140px</td>
+    </tr>
+    <tr>
+      <th class="text-nowrap" scope="row">Class prefix</th>
+      <td><code>.col-</code></td>
+      <td><code>.col-sm-</code></td>
+      <td><code>.col-md-</code></td>
+      <td><code>.col-lg-</code></td>
+      <td><code>.col-xl-</code></td>
+    </tr>
+    <tr>
+      <th class="text-nowrap" scope="row"># of columns</th>
+      <td colspan="5">12</td>
+    </tr>
+    <tr>
+      <th class="text-nowrap" scope="row">Gutter width</th>
+      <td colspan="5">30px (15px on each side of a column)</td>
+    </tr>
+    <tr>
+      <th class="text-nowrap" scope="row">Nestable</th>
+      <td colspan="5">Yes</td>
+    </tr>
+    <tr>
+      <th class="text-nowrap" scope="row">Column ordering</th>
+      <td colspan="5">Yes</td>
+    </tr>
+  </tbody>
+</table>
+
+## Auto-layout columns
+
+Utilize breakpoint-specific column classes for easy column sizing without an explicit numbered class like `.col-sm-6`.
+
+### Equal-width
+
+For example, here are two grid layouts that apply to every device and viewport, from `xs` to `xl`. Add any number of unit-less classes for each breakpoint you need and every column will be the same width.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row">
+    <div class="col">
+      1 of 2
+    </div>
+    <div class="col">
+      2 of 2
+    </div>
+  </div>
+  <div class="row">
+    <div class="col">
+      1 of 3
+    </div>
+    <div class="col">
+      2 of 3
+    </div>
+    <div class="col">
+      3 of 3
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+Equal-width columns can be broken into multiple lines, but there was a [Safari flexbox bug](https://github.com/philipwalton/flexbugs#flexbug-11) that prevented this from working without an explicit `flex-basis` or `border`. There are workarounds for older browser versions, but they shouldn't be necessary if you're up-to-date.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row">
+    <div class="col">Column</div>
+    <div class="col">Column</div>
+    <div class="w-100"></div>
+    <div class="col">Column</div>
+    <div class="col">Column</div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Setting one column width
+
+Auto-layout for flexbox grid columns also means you can set the width of one column and have the sibling columns automatically resize around it. You may use predefined grid classes (as shown below), grid mixins, or inline widths. Note that the other columns will resize no matter the width of the center column.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row">
+    <div class="col">
+      1 of 3
+    </div>
+    <div class="col-6">
+      2 of 3 (wider)
+    </div>
+    <div class="col">
+      3 of 3
+    </div>
+  </div>
+  <div class="row">
+    <div class="col">
+      1 of 3
+    </div>
+    <div class="col-5">
+      2 of 3 (wider)
+    </div>
+    <div class="col">
+      3 of 3
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Variable width content
+
+Use `col-{breakpoint}-auto` classes to size columns based on the natural width of their content.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row justify-content-md-center">
+    <div class="col col-lg-2">
+      1 of 3
+    </div>
+    <div class="col-md-auto">
+      Variable width content
+    </div>
+    <div class="col col-lg-2">
+      3 of 3
+    </div>
+  </div>
+  <div class="row">
+    <div class="col">
+      1 of 3
+    </div>
+    <div class="col-md-auto">
+      Variable width content
+    </div>
+    <div class="col col-lg-2">
+      3 of 3
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Equal-width multi-row
+
+Create equal-width columns that span multiple rows by inserting a `.w-100` where you want the columns to break to a new line. Make the breaks responsive by mixing the `.w-100` with some [responsive display utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/display/).
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col">col</div>
+  <div class="col">col</div>
+  <div class="w-100"></div>
+  <div class="col">col</div>
+  <div class="col">col</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+## Responsive classes
+
+Bootstrap's grid includes five tiers of predefined classes for building complex responsive layouts. Customize the size of your columns on extra small, small, medium, large, or extra large devices however you see fit.
+
+### All breakpoints
+
+For grids that are the same from the smallest of devices to the largest, use the `.col` and `.col-*` classes. Specify a numbered class when you need a particularly sized column; otherwise, feel free to stick to `.col`.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col">col</div>
+  <div class="col">col</div>
+  <div class="col">col</div>
+  <div class="col">col</div>
+</div>
+<div class="row">
+  <div class="col-8">col-8</div>
+  <div class="col-4">col-4</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Stacked to horizontal
+
+Using a single set of `.col-sm-*` classes, you can create a basic grid system that starts out stacked and becomes horizontal at the small breakpoint (`sm`).
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-sm-8">col-sm-8</div>
+  <div class="col-sm-4">col-sm-4</div>
+</div>
+<div class="row">
+  <div class="col-sm">col-sm</div>
+  <div class="col-sm">col-sm</div>
+  <div class="col-sm">col-sm</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Mix and match
+
+Don't want your columns to simply stack in some grid tiers? Use a combination of different classes for each tier as needed. See the example below for a better idea of how it all works.
+
+<div class="bd-example-row">
+{% capture example %}
+<!-- Stack the columns on mobile by making one full-width and the other half-width -->
+<div class="row">
+  <div class="col-12 col-md-8">.col-12 .col-md-8</div>
+  <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+</div>
+
+<!-- Columns start at 50% wide on mobile and bump up to 33.3% wide on desktop -->
+<div class="row">
+  <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+  <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+  <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+</div>
+
+<!-- Columns are always 50% wide, on mobile and desktop -->
+<div class="row">
+  <div class="col-6">.col-6</div>
+  <div class="col-6">.col-6</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+## Alignment
+
+Use flexbox alignment utilities to vertically and horizontally align columns.
+
+### Vertical alignment
+
+<div class="bd-example-row bd-example-row-flex-cols">
+{% capture example %}
+<div class="container">
+  <div class="row align-items-start">
+    <div class="col">
+      One of three columns
+    </div>
+    <div class="col">
+      One of three columns
+    </div>
+    <div class="col">
+      One of three columns
+    </div>
+  </div>
+  <div class="row align-items-center">
+    <div class="col">
+      One of three columns
+    </div>
+    <div class="col">
+      One of three columns
+    </div>
+    <div class="col">
+      One of three columns
+    </div>
+  </div>
+  <div class="row align-items-end">
+    <div class="col">
+      One of three columns
+    </div>
+    <div class="col">
+      One of three columns
+    </div>
+    <div class="col">
+      One of three columns
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+<div class="bd-example-row bd-example-row-flex-cols">
+{% capture example %}
+<div class="container">
+  <div class="row">
+    <div class="col align-self-start">
+      One of three columns
+    </div>
+    <div class="col align-self-center">
+      One of three columns
+    </div>
+    <div class="col align-self-end">
+      One of three columns
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Horizontal alignment
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row justify-content-start">
+    <div class="col-4">
+      One of two columns
+    </div>
+    <div class="col-4">
+      One of two columns
+    </div>
+  </div>
+  <div class="row justify-content-center">
+    <div class="col-4">
+      One of two columns
+    </div>
+    <div class="col-4">
+      One of two columns
+    </div>
+  </div>
+  <div class="row justify-content-end">
+    <div class="col-4">
+      One of two columns
+    </div>
+    <div class="col-4">
+      One of two columns
+    </div>
+  </div>
+  <div class="row justify-content-around">
+    <div class="col-4">
+      One of two columns
+    </div>
+    <div class="col-4">
+      One of two columns
+    </div>
+  </div>
+  <div class="row justify-content-between">
+    <div class="col-4">
+      One of two columns
+    </div>
+    <div class="col-4">
+      One of two columns
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### No gutters
+
+The gutters between columns in our predefined grid classes can be removed with `.no-gutters`. This removes the negative `margin`s from `.row` and the horizontal `padding` from all immediate children columns.
+
+Here's the source code for creating these styles. Note that column overrides are scoped to only the first children columns and are targeted via [attribute selector](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors). While this generates a more specific selector, column padding can still be further customized with [spacing utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/).
+
+**Need an edge-to-edge design?** Drop the parent `.container` or `.container-fluid`.
+
+{% highlight sass %}
+.no-gutters {
+  margin-right: 0;
+  margin-left: 0;
+
+  > .col,
+  > [class*="col-"] {
+    padding-right: 0;
+    padding-left: 0;
+  }
+}
+{% endhighlight %}
+
+In practice, here's how it looks. Note you can continue to use this with all other predefined grid classes (including column widths, responsive tiers, reorders, and more).
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row no-gutters">
+  <div class="col-12 col-sm-6 col-md-8">.col-12 .col-sm-6 .col-md-8</div>
+  <div class="col-6 col-md-4">.col-6 .col-md-4</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Column wrapping
+
+If more than 12 columns are placed within a single row, each group of extra columns will, as one unit, wrap onto a new line.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-9">.col-9</div>
+  <div class="col-4">.col-4<br>Since 9 + 4 = 13 &gt; 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.</div>
+  <div class="col-6">.col-6<br>Subsequent columns continue along the new line.</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Column breaks
+
+Breaking columns to a new line in flexbox requires a small hack: add an element with `width: 100%` wherever you want to wrap your columns to a new line. Normally this is accomplished with multiple `.row`s, but not every implementation method can account for this.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-6 col-sm-3">.col-6 .col-sm-3</div>
+  <div class="col-6 col-sm-3">.col-6 .col-sm-3</div>
+
+  <!-- Force next columns to break to new line -->
+  <div class="w-100"></div>
+
+  <div class="col-6 col-sm-3">.col-6 .col-sm-3</div>
+  <div class="col-6 col-sm-3">.col-6 .col-sm-3</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+You may also apply this break at specific breakpoints with our [responsive display utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/display/).
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
+  <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
+
+  <!-- Force next columns to break to new line at md breakpoint and up -->
+  <div class="w-100 d-none d-md-block"></div>
+
+  <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
+  <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+## Reordering
+
+### Order classes
+
+Use `.order-` classes for controlling the **visual order** of your content. These classes are responsive, so you can set the `order` by breakpoint (e.g., `.order-1.order-md-2`). Includes support for `1` through `12` across all five grid tiers.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row">
+    <div class="col">
+      First, but unordered
+    </div>
+    <div class="col order-12">
+      Second, but last
+    </div>
+    <div class="col order-1">
+      Third, but first
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+There are also responsive `.order-first` and `.order-last` classes that change the `order` of an element by applying `order: -1` and `order: 13` (`order: $columns + 1`), respectively. These classes can also be intermixed with the numbered `.order-*` classes as needed.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="container">
+  <div class="row">
+    <div class="col order-last">
+      First, but last
+    </div>
+    <div class="col">
+      Second, but unordered
+    </div>
+    <div class="col order-first">
+      Third, but first
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Offsetting columns
+
+You can offset grid columns in two ways: our responsive `.offset-` grid classes and our [margin utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/). Grid classes are sized to match columns while margins are more useful for quick layouts where the width of the offset is variable.
+
+#### Offset classes
+
+Move columns to the right using `.offset-md-*` classes. These classes increase the left margin of a column by `*` columns. For example, `.offset-md-4` moves `.col-md-4` over four columns.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-md-4">.col-md-4</div>
+  <div class="col-md-4 offset-md-4">.col-md-4 .offset-md-4</div>
+</div>
+<div class="row">
+  <div class="col-md-3 offset-md-3">.col-md-3 .offset-md-3</div>
+  <div class="col-md-3 offset-md-3">.col-md-3 .offset-md-3</div>
+</div>
+<div class="row">
+  <div class="col-md-6 offset-md-3">.col-md-6 .offset-md-3</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+In addition to column clearing at responsive breakpoints, you may need to reset offsets. See this in action in [the grid example]({{ site.baseurl }}/docs/{{ site.docs_version }}/examples/grid/).
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-sm-5 col-md-6">.col-sm-5 .col-md-6</div>
+  <div class="col-sm-5 offset-sm-2 col-md-6 offset-md-0">.col-sm-5 .offset-sm-2 .col-md-6 .offset-md-0</div>
+</div>
+
+<div class="row">
+  <div class="col-sm-6 col-md-5 col-lg-6">.col-sm-6 .col-md-5 .col-lg-6</div>
+  <div class="col-sm-6 col-md-5 offset-md-2 col-lg-6 offset-lg-0">.col-sm-6 .col-md-5 .offset-md-2 .col-lg-6 .offset-lg-0</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+#### Margin utilities
+
+With the move to flexbox in v4, you can use margin utilities like `.mr-auto` to force sibling columns away from one another.
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-md-4">.col-md-4</div>
+  <div class="col-md-4 ml-auto">.col-md-4 .ml-auto</div>
+</div>
+<div class="row">
+  <div class="col-md-3 ml-md-auto">.col-md-3 .ml-md-auto</div>
+  <div class="col-md-3 ml-md-auto">.col-md-3 .ml-md-auto</div>
+</div>
+<div class="row">
+  <div class="col-auto mr-auto">.col-auto .mr-auto</div>
+  <div class="col-auto">.col-auto</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+## Nesting
+
+To nest your content with the default grid, add a new `.row` and set of `.col-sm-*` columns within an existing `.col-sm-*` column. Nested rows should include a set of columns that add up to 12 or fewer (it is not required that you use all 12 available columns).
+
+<div class="bd-example-row">
+{% capture example %}
+<div class="row">
+  <div class="col-sm-9">
+    Level 1: .col-sm-9
+    <div class="row">
+      <div class="col-8 col-sm-6">
+        Level 2: .col-8 .col-sm-6
+      </div>
+      <div class="col-4 col-sm-6">
+        Level 2: .col-4 .col-sm-6
+      </div>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+## Sass mixins
+
+When using Bootstrap's source Sass files, you have the option of using Sass variables and mixins to create custom, semantic, and responsive page layouts. Our predefined grid classes use these same variables and mixins to provide a whole suite of ready-to-use classes for fast responsive layouts.
+
+### Variables
+
+Variables and maps determine the number of columns, the gutter width, and the media query point at which to begin floating columns. We use these to generate the predefined grid classes documented above, as well as for the custom mixins listed below.
+
+{% highlight scss %}
+$grid-columns:      12;
+$grid-gutter-width: 30px;
+
+$grid-breakpoints: (
+  // Extra small screen / phone
+  xs: 0,
+  // Small screen / phone
+  sm: 576px,
+  // Medium screen / tablet
+  md: 768px,
+  // Large screen / desktop
+  lg: 992px,
+  // Extra large screen / wide desktop
+  xl: 1200px
+);
+
+$container-max-widths: (
+  sm: 540px,
+  md: 720px,
+  lg: 960px,
+  xl: 1140px
+);
+{% endhighlight %}
+
+### Mixins
+
+Mixins are used in conjunction with the grid variables to generate semantic CSS for individual grid columns.
+
+{% highlight scss %}
+// Creates a wrapper for a series of columns
+@include make-row();
+
+// Make the element grid-ready (applying everything but the width)
+@include make-col-ready();
+@include make-col($size, $columns: $grid-columns);
+
+// Get fancy by offsetting, or changing the sort order
+@include make-col-offset($size, $columns: $grid-columns);
+{% endhighlight %}
+
+### Example usage
+
+You can modify the variables to your own custom values, or just use the mixins with their default values. Here's an example of using the default settings to create a two-column layout with a gap between.
+
+{% highlight scss %}
+.example-container {
+  width: 800px;
+  @include make-container();
+}
+
+.example-row {
+  @include make-row();
+}
+
+.example-content-main {
+  @include make-col-ready();
+
+  @include media-breakpoint-up(sm) {
+    @include make-col(6);
+  }
+  @include media-breakpoint-up(lg) {
+    @include make-col(8);
+  }
+}
+
+.example-content-secondary {
+  @include make-col-ready();
+
+  @include media-breakpoint-up(sm) {
+    @include make-col(6);
+  }
+  @include media-breakpoint-up(lg) {
+    @include make-col(4);
+  }
+}
+{% endhighlight %}
+
+{% capture example %}
+<div class="example-container">
+  <div class="example-row">
+    <div class="example-content-main">Main content</div>
+    <div class="example-content-secondary">Secondary content</div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Customizing the grid
+
+Using our built-in grid Sass variables and maps, it's possible to completely customize the predefined grid classes. Change the number of tiers, the media query dimensions, and the container widths—then recompile.
+
+### Columns and gutters
+
+The number of grid columns can be modified via Sass variables. `$grid-columns` is used to generate the widths (in percent) of each individual column while `$grid-gutter-width` sets the width for the column gutters.
+
+{% highlight scss %}
+$grid-columns: 12 !default;
+$grid-gutter-width: 30px !default;
+{% endhighlight %}
+
+### Grid tiers
+
+Moving beyond the columns themselves, you may also customize the number of grid tiers. If you wanted just four grid tiers, you'd update the `$grid-breakpoints` and `$container-max-widths` to something like this:
+
+{% highlight scss %}
+$grid-breakpoints: (
+  xs: 0,
+  sm: 480px,
+  md: 768px,
+  lg: 1024px
+);
+
+$container-max-widths: (
+  sm: 420px,
+  md: 720px,
+  lg: 960px
+);
+{% endhighlight %}
+
+When making any changes to the Sass variables or maps, you'll need to save your changes and recompile. Doing so will output a brand new set of predefined grid classes for column widths, offsets, and ordering. Responsive visibility utilities will also be updated to use the custom breakpoints. Make sure to set grid values in `px` (not `rem`, `em`, or `%`).
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/layout/media-object.md b/vendor/twbs/bootstrap/site/docs/4.1/layout/media-object.md
new file mode 100644
index 000000000..500fa3e31
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/layout/media-object.md
@@ -0,0 +1,144 @@
+---
+layout: docs
+title: Media object
+description: Documentation and examples for Bootstrap's media object to construct highly repetitive components like blog comments, tweets, and the like.
+group: layout
+toc: true
+---
+
+## Example
+
+The [media object](http://www.stubbornella.org/content/2010/06/25/the-media-object-saves-hundreds-of-lines-of-code/) helps build complex and repetitive components where some media is positioned alongside content that doesn't wrap around said media. Plus, it does this with only two required classes thanks to flexbox.
+
+Below is an example of a single media object. Only two classes are required—the wrapping `.media` and the `.media-body` around your content. Optional padding and margin can be controlled through [spacing utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/).
+
+{% capture example %}
+<div class="media">
+  <img class="mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+  <div class="media-body">
+    <h5 class="mt-0">Media heading</h5>
+    Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture callout %}
+##### Flexbug #12: Inline elements aren't treated as flex items
+
+Internet Explorer 10-11 do not render inline elements like links or images (or `::before` and `::after` pseudo-elements) as flex items. The only workaround is to set a non-inline `display` value (e.g., `block`, `inline-block`, or `flex`). We suggest using `.d-flex`, one of our [display utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/display/), as an easy fix.
+
+**Source:** [Flexbugs on GitHub](https://github.com/philipwalton/flexbugs#flexbug-12)
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+## Nesting
+
+Media objects can be infinitely nested, though we suggest you stop at some point. Place nested `.media` within the `.media-body` of a parent media object.
+
+{% capture example %}
+<div class="media">
+  <img class="mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+  <div class="media-body">
+    <h5 class="mt-0">Media heading</h5>
+    Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
+
+    <div class="media mt-3">
+      <a class="pr-3" href="#">
+        <img data-src="holder.js/64x64" alt="Generic placeholder image">
+      </a>
+      <div class="media-body">
+        <h5 class="mt-0">Media heading</h5>
+        Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
+      </div>
+    </div>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Alignment
+
+Media in a media object can be aligned with flexbox utilities to the top (default), middle, or end of your `.media-body` content.
+
+{% capture example %}
+<div class="media">
+  <img class="align-self-start mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+  <div class="media-body">
+    <h5 class="mt-0">Top-aligned media</h5>
+    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
+    <p>Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="media">
+  <img class="align-self-center mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+  <div class="media-body">
+    <h5 class="mt-0">Center-aligned media</h5>
+    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
+    <p class="mb-0">Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="media">
+  <img class="align-self-end mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+  <div class="media-body">
+    <h5 class="mt-0">Bottom-aligned media</h5>
+    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
+    <p class="mb-0">Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
+  </div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Order
+
+Change the order of content in media objects by modifying the HTML itself, or by adding some custom flexbox CSS to set the `order` property (to an integer of your choosing).
+
+{% capture example %}
+<div class="media">
+  <div class="media-body">
+    <h5 class="mt-0 mb-1">Media object</h5>
+    Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
+  </div>
+  <img class="ml-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Media list
+
+Because the media object has so few structural requirements, you can also use these classes on list HTML elements. On your `<ul>` or `<ol>`, add the `.list-unstyled` to remove any browser default list styles, and then apply `.media` to your `<li>`s. As always, use spacing utilities wherever needed to fine tune.
+
+{% capture example %}
+<ul class="list-unstyled">
+  <li class="media">
+    <img class="mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+    <div class="media-body">
+      <h5 class="mt-0 mb-1">List-based media object</h5>
+      Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
+    </div>
+  </li>
+  <li class="media my-4">
+    <img class="mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+    <div class="media-body">
+      <h5 class="mt-0 mb-1">List-based media object</h5>
+      Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
+    </div>
+  </li>
+  <li class="media">
+    <img class="mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
+    <div class="media-body">
+      <h5 class="mt-0 mb-1">List-based media object</h5>
+      Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
+    </div>
+  </li>
+</ul>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/layout/overview.md b/vendor/twbs/bootstrap/site/docs/4.1/layout/overview.md
new file mode 100644
index 000000000..102e25727
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/layout/overview.md
@@ -0,0 +1,189 @@
+---
+layout: docs
+title: Overview
+description: Components and options for laying out your Bootstrap project, including wrapping containers, a powerful grid system, a flexible media object, and responsive utility classes.
+group: layout
+redirect_from: "/docs/4.1/layout/"
+toc: true
+---
+
+## Containers
+
+Containers are the most basic layout element in Bootstrap and are **required when using our default grid system**. Choose from a responsive, fixed-width container (meaning its `max-width` changes at each breakpoint) or fluid-width (meaning it's `100%` wide all the time).
+
+While containers *can* be nested, most layouts do not require a nested container.
+
+<div class="bd-example">
+  <div class="bd-example-container">
+    <div class="bd-example-container-header"></div>
+    <div class="bd-example-container-sidebar"></div>
+    <div class="bd-example-container-body"></div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="container">
+  <!-- Content here -->
+</div>
+{% endhighlight %}
+
+Use `.container-fluid` for a full width container, spanning the entire width of the viewport.
+
+<div class="bd-example">
+  <div class="bd-example-container bd-example-container-fluid">
+    <div class="bd-example-container-header"></div>
+    <div class="bd-example-container-sidebar"></div>
+    <div class="bd-example-container-body"></div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="container-fluid">
+  ...
+</div>
+{% endhighlight %}
+
+
+## Responsive breakpoints
+
+Since Bootstrap is developed to be mobile first, we use a handful of [media queries](https://developer.mozilla.org/en-US/docs/Web/CSS/Media_Queries/Using_media_queries) to create sensible breakpoints for our layouts and interfaces. These breakpoints are mostly based on minimum viewport widths and allow us to scale up elements as the viewport changes.
+
+Bootstrap primarily uses the following media query ranges—or breakpoints—in our source Sass files for our layout, grid system, and components.
+
+{% highlight scss %}
+// Extra small devices (portrait phones, less than 576px)
+// No media query for `xs` since this is the default in Bootstrap
+
+// Small devices (landscape phones, 576px and up)
+@media (min-width: 576px) { ... }
+
+// Medium devices (tablets, 768px and up)
+@media (min-width: 768px) { ... }
+
+// Large devices (desktops, 992px and up)
+@media (min-width: 992px) { ... }
+
+// Extra large devices (large desktops, 1200px and up)
+@media (min-width: 1200px) { ... }
+{% endhighlight %}
+
+Since we write our source CSS in Sass, all our media queries are available via Sass mixins:
+
+{% highlight scss %}
+// No media query necessary for xs breakpoint as it's effectively `@media (min-width: 0) { ... }`
+@include media-breakpoint-up(sm) { ... }
+@include media-breakpoint-up(md) { ... }
+@include media-breakpoint-up(lg) { ... }
+@include media-breakpoint-up(xl) { ... }
+
+// Example: Hide starting at `min-width: 0`, and then show at the `sm` breakpoint
+.custom-class {
+  display: none;
+}
+@include media-breakpoint-up(sm) {
+  .custom-class {
+    display: block;
+  }
+}
+{% endhighlight %}
+
+We occasionally use media queries that go in the other direction (the given screen size *or smaller*):
+
+{% highlight scss %}
+// Extra small devices (portrait phones, less than 576px)
+@media (max-width: 575.98px) { ... }
+
+// Small devices (landscape phones, less than 768px)
+@media (max-width: 767.98px) { ... }
+
+// Medium devices (tablets, less than 992px)
+@media (max-width: 991.98px) { ... }
+
+// Large devices (desktops, less than 1200px)
+@media (max-width: 1199.98px) { ... }
+
+// Extra large devices (large desktops)
+// No media query since the extra-large breakpoint has no upper bound on its width
+{% endhighlight %}
+
+{% include callout-info-mediaqueries-breakpoints.md %}
+
+Once again, these media queries are also available via Sass mixins:
+
+{% highlight scss %}
+@include media-breakpoint-down(xs) { ... }
+@include media-breakpoint-down(sm) { ... }
+@include media-breakpoint-down(md) { ... }
+@include media-breakpoint-down(lg) { ... }
+// No media query necessary for xl breakpoint as it has no upper bound on its width
+
+// Example: Style from medium breakpoint and down
+@include media-breakpoint-down(md) {
+  .custom-class {
+    display: block;
+  }
+}
+{% endhighlight %}
+
+There are also media queries and mixins for targeting a single segment of screen sizes using the minimum and maximum breakpoint widths.
+
+{% highlight scss %}
+// Extra small devices (portrait phones, less than 576px)
+@media (max-width: 575.98px) { ... }
+
+// Small devices (landscape phones, 576px and up)
+@media (min-width: 576px) and (max-width: 767.98px) { ... }
+
+// Medium devices (tablets, 768px and up)
+@media (min-width: 768px) and (max-width: 991.98px) { ... }
+
+// Large devices (desktops, 992px and up)
+@media (min-width: 992px) and (max-width: 1199.98px) { ... }
+
+// Extra large devices (large desktops, 1200px and up)
+@media (min-width: 1200px) { ... }
+{% endhighlight %}
+
+These media queries are also available via Sass mixins:
+
+{% highlight scss %}
+@include media-breakpoint-only(xs) { ... }
+@include media-breakpoint-only(sm) { ... }
+@include media-breakpoint-only(md) { ... }
+@include media-breakpoint-only(lg) { ... }
+@include media-breakpoint-only(xl) { ... }
+{% endhighlight %}
+
+Similarly, media queries may span multiple breakpoint widths:
+
+{% highlight scss %}
+// Example
+// Apply styles starting from medium devices and up to extra large devices
+@media (min-width: 768px) and (max-width: 1199.98px) { ... }
+{% endhighlight %}
+
+The Sass mixin for targeting the same screen size range would be:
+
+{% highlight scss %}
+@include media-breakpoint-between(md, xl) { ... }
+{% endhighlight %}
+
+## Z-index
+
+Several Bootstrap components utilize `z-index`, the CSS property that helps control layout by providing a third axis to arrange content. We utilize a default z-index scale in Bootstrap that's been designed to properly layer navigation, tooltips and popovers, modals, and more.
+
+These higher values start at an arbitrary number, high and specific enough to ideally avoid conflicts. We need a standard set of these across our layered components—tooltips, popovers, navbars, dropdowns, modals—so we can be reasonably consistent in the behaviors. There's no reason we couldn't have used `100`+ or `500`+.
+
+We don't encourage customization of these individual values; should you change one, you likely need to change them all.
+
+{% highlight scss %}
+$zindex-dropdown:          1000 !default;
+$zindex-sticky:            1020 !default;
+$zindex-fixed:             1030 !default;
+$zindex-modal-backdrop:    1040 !default;
+$zindex-modal:             1050 !default;
+$zindex-popover:           1060 !default;
+$zindex-tooltip:           1070 !default;
+{% endhighlight %}
+
+To handle overlapping borders within components (e.g., buttons and inputs in input groups), we use low single digit `z-index` values of `1`, `2`, and `3` for default, hover, and active states. On hover/focus/active, we bring a particular element to the forefront with a higher `z-index` value to show their border over the sibling elements.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/layout/utilities-for-layout.md b/vendor/twbs/bootstrap/site/docs/4.1/layout/utilities-for-layout.md
new file mode 100644
index 000000000..a62a5abe0
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/layout/utilities-for-layout.md
@@ -0,0 +1,25 @@
+---
+layout: docs
+title: Utilities for layout
+description: For faster mobile-friendly and responsive development, Bootstrap includes dozens of utility classes for showing, hiding, aligning, and spacing content.
+group: layout
+toc: true
+---
+
+## Changing `display`
+
+Use our [display utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/display/) for responsively toggling common values of the `display` property. Mix it with our grid system, content, or components to show or hide them across specific viewports.
+
+## Flexbox options
+
+Bootstrap 4 is built with flexbox, but not every element's `display` has been changed to `display: flex` as this would add many unnecessary overrides and unexpectedly change key browser behaviors. Most of [our components]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/alerts/) are built with flexbox enabled.
+
+Should you need to add `display: flex` to an element, do so with `.d-flex` or one of the responsive variants (e.g., `.d-sm-flex`). You'll need this class or `display` value to allow the use of our extra [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/) for sizing, alignment, spacing, and more.
+
+## Margin and padding
+
+Use the `margin` and `padding` [spacing utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) to control how elements and components are spaced and sized. Bootstrap 4 includes a five-level scale for spacing utilities, based on a `1rem` value default `$spacer` variable. Choose values for all viewports (e.g., `.mr-3` for `margin-right: 1rem`), or pick responsive variants to target specific viewports (e.g., `.mr-md-3` for `margin-right: 1rem` starting at the `md` breakpoint).
+
+## Toggle `visibility`
+
+When toggling `display` isn't needed, you can toggle the `visibility` of an element with our [visibility utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/visibility/). Invisible elements will still affect the layout of the page, but are visually hidden from visitors.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/migration.md b/vendor/twbs/bootstrap/site/docs/4.1/migration.md
new file mode 100644
index 000000000..6798d8729
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/migration.md
@@ -0,0 +1,336 @@
+---
+layout: docs
+title: Migrating to v4
+description: Bootstrap 4 is a major rewrite of the entire project. The most notable changes are summarized below, followed by more specific changes to relevant components.
+group: migration
+toc: true
+---
+
+## Stable changes
+
+Moving from Beta 3 to our stable v4.0 release, there are no breaking changes, but there are some notable changes.
+
+### Printing
+- Fixed broken print utilities. Previously, using a `.d-print-*` class would unexpectedly overrule any other `.d-*` class. Now, they match our other display utilities and only apply to that media (`@media print`).
+
+- Expanded available print display utilities to match other utilities. Beta 3 and older only had `block`, `inline-block`, `inline`, and `none`. Stable v4 added `flex`, `inline-flex`, `table`, `table-row`, and `table-cell`.
+
+- Fixed print preview rendering across browsers with new print styles that specify `@page` `size`.
+
+## Beta 3 changes
+
+While Beta 2 saw the bulk of our breaking changes during the beta phase, but we still have a few that needed to be addressed in the Beta 3 release. These changes apply if you're updating to Beta 3 from Beta 2 or any older version of Bootstrap.
+
+### Miscellaneous
+
+- Removed the unused `$thumbnail-transition` variable. We weren't transitioning anything, so it was just extra code.
+- The npm package no longer includes any files other than our source and dist files; if you relied on them and were running our scripts via the `node_modules` folder, you should adapt your workflow.
+
+### Forms
+
+- Rewrote both custom and default checkboxes and radios. Now, both have matching HTML structure (outer `<div>` with sibling `<input>` and `<label>`) and the same layout styles (stacked default, inline with modifier class). This allows us to style the label based on the input's state, simplifying support for the `disabled` attribute (previously requiring a parent class) and better supporting our form validation.
+
+  As part of this, we've changed the CSS for managing multiple `background-image`s on custom form checkboxes and radios. Previously, the now removed `.custom-control-indicator` element had the background color, gradient, and SVG icon. Customizing the background gradient meant replacing all of those every time you needed to change just one. Now, we have `.custom-control-label::before` for the fill and gradient and `.custom-control-label::after` handles the icon.
+
+  To make a custom check inline, add `.custom-control-inline`.
+
+- Updated selector for input-based button groups. Instead of `[data-toggle="buttons"] { }` for style and behavior, we use the `data` attribute just for JS behaviors and rely on a new `.btn-group-toggle` class for styling.
+
+- Removed `.col-form-legend` in favor of a slightly improved `.col-form-label`. This way `.col-form-label-sm` and `.col-form-label-lg` can be used on `<legend>` elements with ease.
+
+- Custom file inputs received a change to their `$custom-file-text` Sass variable. It's no longer a nested Sass map and now only powers one string—the `Browse` button as that is now the only pseudo-element generated from our Sass. The `Choose file` text now comes from the `.custom-file-label`.
+
+### Input groups
+
+- Input group addons are now specific to their placement relative to an input. We've dropped `.input-group-addon` and `.input-group-btn` for two new classes, `.input-group-prepend` and `.input-group-append`. You must explicitly use an append or a prepend now, simplifying much of our CSS. Within an append or prepend, place your buttons as they would exist anywhere else, but wrap text in `.input-group-text`.
+
+- Validation styles are now supported, as are multiple inputs (though you can only validate one input per group).
+
+- Sizing classes must be on the parent `.input-group` and not the individual form elements.
+
+## Beta 2 changes
+
+While in beta, we aim to have no breaking changes. However, things don't always go as planned. Below are the breaking changes to bear in mind when moving from Beta 1 to Beta 2.
+
+### Breaking
+
+- Removed `$badge-color` variable and its usage on `.badge`. We use a color contrast function to pick a `color` based on the `background-color`, so the variable is unnecessary.
+- Renamed `grayscale()` function to `gray()` to avoid breaking conflict with the CSS native `grayscale` filter.
+- Renamed `.table-inverse`, `.thead-inverse`, and `.thead-default` to `.*-dark` and `.*-light`, matching our color schemes used elsewhere.
+- Responsive tables now generate classes for each grid breakpoint. This breaks from Beta 1 in that the `.table-responsive` you've been using is more like `.table-responsive-md`. You may now use `.table-responsive` or `.table-responsive-{sm,md,lg,xl}` as needed.
+- Dropped Bower support as the package manager has been deprecated for alternatives (e.g., Yarn or npm). [See bower/bower#2298](https://github.com/bower/bower/issues/2298) for details.
+- Bootstrap still requires jQuery 1.9.1 or higher, but you're advised to use version 3.x since v3.x's supported browsers are the ones Bootstrap supports plus v3.x has some security fixes.
+- Removed the unused `.form-control-label` class. If you did make use of this class, it was duplicate of the `.col-form-label` class that vertically centered a `<label>` with it's associated input in horizontal form layouts.
+- Changed the `color-yiq` from a mixin that included the `color` property to a function that returns a value, allowing you to use it for any CSS property. For example, instead of `color-yiq(#000)`, you'd write `color: color-yiq(#000);`.
+
+### Highlights
+
+- Introduced new `pointer-events` usage on modals. The outer `.modal-dialog` passes through events with `pointer-events: none` for custom click handling (making it possible to just listen on the `.modal-backdrop` for any clicks), and then counteracts it for the actual `.modal-content` with `pointer-events: auto`.
+
+
+## Summary
+
+Here are the big ticket items you'll want to be aware of when moving from v3 to v4.
+
+### Browser support
+
+- Dropped IE8, IE9, and iOS 6 support. v4 is now only IE10+ and iOS 7+. For sites needing either of those, use v3.
+- Added official support for Android v5.0 Lollipop's Browser and WebView. Earlier versions of the Android Browser and WebView remain only unofficially supported.
+
+### Global changes
+
+- **Flexbox is enabled by default.** In general this means a move away from floats and more across our components.
+- Switched from [Less](http://lesscss.org/) to [Sass](https://sass-lang.com/) for our source CSS files.
+- Switched from `px` to `rem` as our primary CSS unit, though pixels are still used for media queries and grid behavior as device viewports are not affected by type size.
+- Global font-size increased from `14px` to `16px`.
+- Revamped grid tiers to add a fifth option (addressing smaller devices at `576px` and below) and removed the `-xs` infix from those classes. Example: `.col-6.col-sm-4.col-md-3`.
+- Replaced the separate optional theme with configurable options via SCSS variables (e.g., `$enable-gradients: true`).
+- Build system overhauled to use a series of npm scripts instead of Grunt. See `package.json` for all scripts, or our project readme for local development needs.
+- Non-responsive usage of Bootstrap is no longer supported.
+- Dropped the online Customizer in favor of more extensive setup documentation and customized builds.
+- Added dozens of new [utility classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/) for common CSS property-value pairs and margin/padding spacing shortcuts.
+
+### Grid system
+
+- **Moved to flexbox.**
+  - Added support for flexbox in the grid mixins and predefined classes.
+  - As part of flexbox, included support for vertical and horizontal alignment classes.
+- **Updated grid class names and a new grid tier.**
+  - Added a new `sm` grid tier below `768px` for more granular control. We now have `xs`, `sm`, `md`, `lg`, and `xl`. This also means every tier has been bumped up one level (so `.col-md-6` in v3 is now `.col-lg-6` in v4).
+  - `xs` grid classes have been modified to not require the infix to more accurately represent that they start applying styles at `min-width: 0` and not a set pixel value. Instead of `.col-xs-6`, it's now `.col-6`. All other grid tiers require the infix (e.g., `sm`).
+- **Updated grid sizes, mixins, and variables.**
+  - Grid gutters now have a Sass map so you can specify specific gutter widths at each breakpoint.
+  - Updated grid mixins to utilize a `make-col-ready` prep mixin and a `make-col` to set the `flex` and `max-width` for individual column sizing.
+  - Changed grid system media query breakpoints and container widths to account for new grid tier and ensure columns are evenly divisible by `12` at their max width.
+  - Grid breakpoints and container widths are now handled via Sass maps (`$grid-breakpoints` and `$container-max-widths`) instead of a handful of separate variables. These replace the `@screen-*` variables entirely and allow you to fully customize the grid tiers.
+  - Media queries have also changed. Instead of repeating our media query declarations with the same value each time, we now have `@include media-breakpoint-up/down/only`. Now, instead of writing `@media (min-width: @screen-sm-min) { ... }`, you can write `@include media-breakpoint-up(sm) { ... }`.
+
+### Components
+
+- **Dropped panels, thumbnails, and wells** for a new all-encompassing component, [cards]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/card/).
+- **Dropped the Glyphicons icon font.** If you need icons, some options are:
+  - the upstream version of [Glyphicons](https://glyphicons.com/)
+  - [Octicons](https://octicons.github.com/)
+  - [Font Awesome](https://fontawesome.com/)
+  - See the [Extend page]({{ site.baseurl }}/docs/{{ site.docs_version }}/extend/icons/) for a list of alternatives. Have additional suggestions? Please open an issue or PR.
+- **Dropped the Affix jQuery plugin.**
+  - We recommend using `position: sticky` instead. [See the HTML5 Please entry](http://html5please.com/#sticky) for details and specific polyfill recommendations. One suggestion is to use an `@supports` rule for implementing it (e.g., `@supports (position: sticky) { ... }`)/
+  - If you were using Affix to apply additional, non-`position` styles, the polyfills might not support your use case. One option for such uses is the third-party [ScrollPos-Styler](https://github.com/acch/scrollpos-styler) library.
+- **Dropped the pager component** as it was essentially slightly customized buttons.
+- **Refactored nearly all components** to use more un-nested class selectors instead of over-specific children selectors.
+
+## By component
+
+This list highlights key changes by component between v3.x.x and v4.0.0.
+
+### Reboot
+
+New to Bootstrap 4 is the [Reboot]({{ site.baseurl }}/docs/{{ site.docs_version }}/content/reboot/), a new stylesheet that builds on Normalize with our own somewhat opinionated reset styles. Selectors appearing in this file only use elements—there are no classes here. This isolates our reset styles from our component styles for a more modular approach. Some of the most important resets this includes are the `box-sizing: border-box` change, moving from `em` to `rem` units on many elements, link styles, and many form element resets.
+
+### Typography
+
+- Moved all `.text-` utilities to the `_utilities.scss` file.
+- Dropped `.page-header` as its styles can be applied via utilities.
+- `.dl-horizontal` has been dropped. Instead, use `.row` on `<dl>` and use grid column classes (or mixins) on its `<dt>` and `<dd>` children.
+- Redesigned blockquotes, moving their styles from the `<blockquote>` element to a single class, `.blockquote`. Dropped the `.blockquote-reverse` modifier for text utilities.
+- `.list-inline` now requires that its children list items have the new `.list-inline-item` class applied to them.
+
+### Images
+
+- Renamed `.img-responsive` to `.img-fluid`.
+- Renamed `.img-rounded` to `.rounded`
+- Renamed `.img-circle` to `.rounded-circle`
+
+### Tables
+
+- Nearly all instances of the `>` selector have been removed, meaning nested tables will now automatically inherit styles from their parents. This greatly simplifies our selectors and potential customizations.
+- Renamed `.table-condensed` to `.table-sm` for consistency.
+- Added a new `.table-inverse` option.
+- Added table header modifiers: `.thead-default` and `.thead-inverse`.
+- Renamed contextual classes to have a `.table-`-prefix. Hence `.active`, `.success`, `.warning`, `.danger` and `.info` to `.table-active`, `.table-success`, `.table-warning`, `.table-danger` and `.table-info`.
+
+### Forms
+
+- Moved element resets to the `_reboot.scss` file.
+- Renamed `.control-label` to `.col-form-label`.
+- Renamed `.input-lg` and `.input-sm` to `.form-control-lg` and `.form-control-sm`, respectively.
+- Dropped `.form-group-*` classes for simplicity's sake. Use `.form-control-*` classes instead now.
+- Dropped `.help-block` and replaced it with `.form-text` for block-level help text. For inline help text and other flexible options, use utility classes like `.text-muted`.
+- Dropped `.radio-inline` and `.checkbox-inline`.
+- Consolidated `.checkbox` and `.radio` into `.form-check` and the various `.form-check-*` classes.
+- Horizontal forms overhauled:
+  - Dropped the `.form-horizontal` class requirement.
+  - `.form-group` no longer applies styles from the `.row` via mixin, so `.row` is now required for horizontal grid layouts (e.g., `<div class="form-group row">`).
+  - Added new `.col-form-label` class to vertically center labels with `.form-control`s.
+  - Added new `.form-row` for compact form layouts with the grid classes (swap your `.row` for a `.form-row` and go).
+- Added custom forms support (for checkboxes, radios, selects, and file inputs).
+- Replaced `.has-error`, `.has-warning`, and `.has-success` classes with HTML5 form validation via CSS's `:invalid` and `:valid` pseudo-classes.
+- Renamed `.form-control-static` to `.form-control-plaintext`.
+
+### Buttons
+
+- Renamed `.btn-default` to `.btn-secondary`.
+- Dropped the `.btn-xs` class entirely as `.btn-sm` is proportionally much smaller than v3's.
+- The [stateful button]({{ site.url }}/docs/3.3/javascript/#buttons-stateful) feature of the `button.js` jQuery plugin has been dropped. This includes the `$().button(string)` and `$().button('reset')` methods. We advise using a tiny bit of custom JavaScript instead, which will have the benefit of behaving exactly the way you want it to.
+  - Note that the other features of the plugin (button checkboxes, button radios, single-toggle buttons) have been retained in v4.
+- Change buttons' `[disabled]` to `:disabled` as IE9+ supports `:disabled`. However `fieldset[disabled]` is still necessary because [native disabled fieldsets are still buggy in IE11](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/fieldset#Browser_compatibility).
+
+### Button group
+
+- Rewrote component with flexbox.
+- Removed `.btn-group-justified`. As a replacement you can use `<div class="btn-group d-flex" role="group"></div>` as a wrapper around elements with `.w-100`.
+- Dropped the `.btn-group-xs` class entirely given removal of `.btn-xs`.
+- Removed explicit spacing between button groups in button toolbars; use margin utilities now.
+- Improved documentation for use with other components.
+
+### Dropdowns
+
+- Switched from parent selectors to singular classes for all components, modifiers, etc.
+- Simplified dropdown styles to no longer ship with upward or downward facing arrows attached to the dropdown menu.
+- Dropdowns can be built with `<div>`s or `<ul>`s now.
+- Rebuilt dropdown styles and markup to provide easy, built-in support for `<a>` and `<button>` based dropdown items.
+- Renamed `.divider` to `.dropdown-divider`.
+- Dropdown items now require `.dropdown-item`.
+- Dropdown toggles no longer require an explicit `<span class="caret"></span>`; this is now provided automatically via CSS's `::after` on `.dropdown-toggle`.
+
+### Grid system
+
+- Added a new `576px` grid breakpoint as `sm`, meaning there are now five total tiers (`xs`, `sm`, `md`, `lg`, and `xl`).
+- Renamed the responsive grid modifier classes from `.col-{breakpoint}-{modifier}-{size}` to `.{modifier}-{breakpoint}-{size}` for simpler grid classes.
+- Dropped push and pull modifier classes for the new flexbox-powered `order` classes. For example, instead of `.col-8.push-4` and `.col-4.pull-8`, you'd use `.col-8.order-2` and `.col-4.order-1`.
+- Added flexbox utility classes for grid system and components.
+
+### List groups
+
+- Rewrote component with flexbox.
+- Replaced `a.list-group-item` with an explicit class, `.list-group-item-action`, for styling link and button versions of list group items.
+- Added `.list-group-flush` class for use with cards.
+
+### Modal
+
+- Rewrote component with flexbox.
+- Given move to flexbox, alignment of dismiss icons in the header is likely broken as we're no longer using floats. Floated content comes first, but with flexbox that's no longer the case. Update your dismiss icons to come after modal titles to fix.
+- The `remote` option (which could be used to automatically load and inject external content into a modal) and the corresponding `loaded.bs.modal` event were removed. We recommend instead using client-side templating or a data binding framework, or calling [jQuery.load](https://api.jquery.com/load/) yourself.
+
+### Navs
+
+- Rewrote component with flexbox.
+- Dropped nearly all `>` selectors for simpler styling via un-nested classes.
+- Instead of HTML-specific selectors like `.nav > li > a`, we use separate classes for `.nav`s, `.nav-item`s, and `.nav-link`s. This makes your HTML more flexible while bringing along increased extensibility.
+
+### Navbar
+
+The navbar has been entirely rewritten in flexbox with improved support for alignment, responsiveness, and customization.
+
+- Responsive navbar behaviors are now applied to the `.navbar` class via the **required** `.navbar-expand-{breakpoint}` where you choose where to collapse the navbar. Previously this was a Less variable modification and required recompiling.
+- `.navbar-default` is now `.navbar-light`, though `.navbar-dark` remains the same. **One of these is required on each navbar.** However, these classes no longer set `background-color`s; instead they essentially only affect `color`.
+- Navbars now require a background declaration of some kind. Choose from our background utilities (`.bg-*`) or set your own with the light/inverse classes above [for mad customization]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/navbar/#color-schemes).
+- Given flexbox styles, navbars can now use flexbox utilities for easy alignment options.
+- `.navbar-toggle` is now `.navbar-toggler` and has different styles and inner markup (no more three `<span>`s).
+- Dropped the `.navbar-form` class entirely. It's no longer necessary; instead, just use `.form-inline` and apply margin utilities as necessary.
+- Navbars no longer include `margin-bottom` or `border-radius` by default. Use utilities as necessary.
+- All examples featuring navbars have been updated to include new markup.
+
+### Pagination
+
+- Rewrote component with flexbox.
+- Explicit classes (`.page-item`, `.page-link`) are now required on the descendants of `.pagination`s
+- Dropped the `.pager` component entirely as it was little more than customized outline buttons.
+
+### Breadcrumbs
+
+- An explicit class, `.breadcrumb-item`, is now required on the descendants of `.breadcrumb`s
+
+### Labels and badges
+
+- Consolidated `.label` and `.badge` to disambiguate from the `<label>` element and simplify related components.
+- Added `.badge-pill` as modifier for rounded "pill" look.
+- Badges are no longer floated automatically in list groups and other components. Utility classes are now required for that.
+- `.badge-default` has been dropped and `.badge-secondary` added to match component modifier classes used elsewhere.
+
+### Panels, thumbnails, and wells
+
+Dropped entirely for the new card component.
+
+### Panels
+
+- `.panel` to `.card`, now built with flexbox.
+- `.panel-default` removed and no replacement.
+- `.panel-group` removed and no replacement. `.card-group` is not a replacement, it is different.
+- `.panel-heading` to `.card-header`
+- `.panel-title` to `.card-title`. Depending on the desired look, you may also want to use [heading elements or classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/content/typography/#headings) (e.g. `<h3>`, `.h3`) or bold elements or classes (e.g. `<strong>`, `<b>`, [`.font-weight-bold`]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/text/#font-weight-and-italics)). Note that `.card-title`, while similarly named, produces a different look than `.panel-title`.
+- `.panel-body` to `.card-body`
+- `.panel-footer` to `.card-footer`
+- `.panel-primary`, `.panel-success`, `.panel-info`, `.panel-warning`, and `.panel-danger` have been dropped for `.bg-`, `.text-`, and `.border` utilities generated from our `$theme-colors` Sass map.
+
+### Progress
+
+- Replaced contextual `.progress-bar-*` classes with `.bg-*` utilities. For example, `class="progress-bar progress-bar-danger"` becomes `class="progress-bar bg-danger"`.
+- Replaced `.active` for animated progress bars with `.progress-bar-animated`.
+
+### Carousel
+
+- Overhauled the entire component to simplify design and styling. We have fewer styles for you to override, new indicators, and new icons.
+- All CSS has been un-nested and renamed, ensuring each class is prefixed with `.carousel-`.
+  - For carousel items, `.next`, `.prev`, `.left`, and `.right` are now `.carousel-item-next`, `.carousel-item-prev`, `.carousel-item-left`, and `.carousel-item-right`.
+  - `.item` is also now `.carousel-item`.
+  - For prev/next controls, `.carousel-control.right` and `.carousel-control.left` are now `.carousel-control-next` and `.carousel-control-prev`, meaning they no longer require a specific base class.
+- Removed all responsive styling, deferring to utilities (e.g., showing captions on certain viewports) and custom styles as needed.
+- Removed image overrides for images in carousel items, deferring to utilities.
+- Tweaked the Carousel example to include the new markup and styles.
+
+### Tables
+
+- Removed support for styled nested tables. All table styles are now inherited in v4 for simpler selectors.
+- Added inverse table variant.
+
+### Utilities
+
+- **Display, hidden, and more:**
+  - Made display utilities responsive (e.g., `.d-none` and `d-{sm,md,lg,xl}-none`).
+  - Dropped the bulk of `.hidden-*` utilities for new [display utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/display/). For example, instead of `.hidden-sm-up`, use `.d-sm-none`. Renamed the `.hidden-print` utilities to use the display utility naming scheme. [More info under the Responsive utilities section of this page.](#responsive-utilities)
+  - Added `.float-{sm,md,lg,xl}-{left,right,none}` classes for responsive floats and removed `.pull-left` and `.pull-right` since they're redundant to `.float-left` and `.float-right`.
+- **Type:**
+  - Added responsive variations to our text alignment classes `.text-{sm,md,lg,xl}-{left,center,right}`.
+- **Alignment and spacing:**
+  - Added new [responsive margin and padding utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/) for all sides, plus vertical and horizontal shorthands.
+  - Added boatload of [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/).
+  - Dropped `.center-block` for the new `.mx-auto` class.
+- Clearfix updated to drop support for older browser versions.
+
+### Vendor prefix mixins
+
+Bootstrap 3's [vendor prefix](https://www.thoughtco.com/css-vendor-prefixes-3466867) mixins, which were deprecated in v3.2.0, have been removed in Bootstrap 4. Since we use [Autoprefixer](https://github.com/postcss/autoprefixer), they're no longer necessary.
+
+Removed the following mixins: `animation`, `animation-delay`, `animation-direction`, `animation-duration`, `animation-fill-mode`, `animation-iteration-count`, `animation-name`, `animation-timing-function`, `backface-visibility`, `box-sizing`, `content-columns`, `hyphens`, `opacity`, `perspective`, `perspective-origin`, `rotate`, `rotateX`, `rotateY`, `scale`, `scaleX`, `scaleY`, `skew`, `transform-origin`, `transition-delay`, `transition-duration`, `transition-property`, `transition-timing-function`, `transition-transform`, `translate`, `translate3d`, `user-select`
+
+## Documentation
+
+Our documentation received an upgrade across the board as well. Here's the low down:
+
+- We're still using Jekyll, but we have plugins in the mix:
+  - `bugify.rb` is used to efficiently list out the entries on our [browser bugs]({{ site.baseurl }}/docs/{{ site.docs_version }}/browser-bugs/) page.
+  - `example.rb` is a custom fork of the default `highlight.rb` plugin, allowing for easier example-code handling.
+  - `callout.rb` is a similar custom fork of that, but designed for our special docs callouts.
+  - [jekyll-toc](https://github.com/toshimaru/jekyll-toc) is used to generate our table of contents.
+- All docs content has been rewritten in Markdown (instead of HTML) for easier editing.
+- Pages have been reorganized for simpler content and a more approachable hierarchy.
+- We moved from regular CSS to SCSS to take full advantage of Bootstrap's variables, mixins, and more.
+
+### Responsive utilities
+
+All `@screen-` variables have been removed in v4.0.0. Use the `media-breakpoint-up()`, `media-breakpoint-down()`, or `media-breakpoint-only()` Sass mixins or the `$grid-breakpoints` Sass map instead.
+
+Our responsive utility classes have largely been removed in favor of explicit `display` utilities.
+
+- The `.hidden` and `.show` classes have been removed because they conflicted with jQuery's `$(...).hide()` and `$(...).show()` methods. Instead, try toggling the `[hidden]` attribute or use inline styles like `style="display: none;"` and `style="display: block;"`.
+- All `.hidden-` classes have been removed, save for the print utilities which have been renamed.
+  - Removed from v3: `.hidden-xs` `.hidden-sm` `.hidden-md` `.hidden-lg` `.visible-xs-block` `.visible-xs-inline` `.visible-xs-inline-block` `.visible-sm-block` `.visible-sm-inline` `.visible-sm-inline-block` `.visible-md-block` `.visible-md-inline` `.visible-md-inline-block` `.visible-lg-block` `.visible-lg-inline` `.visible-lg-inline-block`
+  - Removed from v4 alphas: `.hidden-xs-up` `.hidden-xs-down` `.hidden-sm-up` `.hidden-sm-down` `.hidden-md-up` `.hidden-md-down` `.hidden-lg-up` `.hidden-lg-down`
+- Print utilities no longer start with `.hidden-` or `.visible-`, but with `.d-print-`.
+  - Old names: `.visible-print-block`, `.visible-print-inline`, `.visible-print-inline-block`, `.hidden-print`
+  - New classes: `.d-print-block`, `.d-print-inline`, `.d-print-inline-block`, `.d-print-none`
+
+Rather than using explicit `.visible-*` classes, you make an element visible by simply not hiding it at that screen size. You can combine one `.d-*-none` class with one `.d-*-block` class to show an element only on a given interval of screen sizes (e.g. `.d-none.d-md-block.d-xl-none` shows the element only on medium and large devices).
+
+Note that the changes to the grid breakpoints in v4 means that you'll need to go one breakpoint larger to achieve the same results. The new responsive utility classes don't attempt to accommodate less common cases where an element's visibility can't be expressed as a single contiguous range of viewport sizes; you will instead need to use custom CSS in such cases.
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/borders.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/borders.md
new file mode 100644
index 000000000..e67cc41c9
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/borders.md
@@ -0,0 +1,75 @@
+---
+layout: docs
+title: Borders
+description: Use border utilities to quickly style the border and border-radius of an element. Great for images, buttons, or any other element.
+group: utilities
+redirect_from: "/docs/4.1/utilities/"
+toc: true
+---
+
+## Border
+
+Use border utilities to add or remove an element's borders. Choose from all borders or one at a time.
+
+### Additive
+
+<div class="bd-example-border-utils">
+{% capture example %}
+<span class="border"></span>
+<span class="border-top"></span>
+<span class="border-right"></span>
+<span class="border-bottom"></span>
+<span class="border-left"></span>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+### Subtractive
+
+<div class="bd-example-border-utils bd-example-border-utils-0">
+{% capture example %}
+<span class="border-0"></span>
+<span class="border-top-0"></span>
+<span class="border-right-0"></span>
+<span class="border-bottom-0"></span>
+<span class="border-left-0"></span>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+## Border color
+
+Change the border color using utilities built on our theme colors.
+
+<div class="bd-example-border-utils">
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<span class="border border-{{ color.name }}"></span>{% endfor %}
+<span class="border border-white"></span>
+{% endcapture %}
+{% include example.html content=example %}
+</div>
+
+## Border-radius
+
+Add classes to an element to easily round its corners.
+
+<div class="bd-example bd-example-images">
+  <img data-src="holder.js/75x75" class="rounded" alt="Example rounded image">
+  <img data-src="holder.js/75x75" class="rounded-top" alt="Example top rounded image">
+  <img data-src="holder.js/75x75" class="rounded-right" alt="Example right rounded image">
+  <img data-src="holder.js/75x75" class="rounded-bottom" alt="Example bottom rounded image">
+  <img data-src="holder.js/75x75" class="rounded-left" alt="Example left rounded image">
+  <img data-src="holder.js/75x75" class="rounded-circle" alt="Completely round image">
+  <img data-src="holder.js/75x75" class="rounded-0" alt="Example non-rounded image (overrides rounding applied elsewhere)">
+</div>
+
+{% highlight html %}
+<img src="..." alt="..." class="rounded">
+<img src="..." alt="..." class="rounded-top">
+<img src="..." alt="..." class="rounded-right">
+<img src="..." alt="..." class="rounded-bottom">
+<img src="..." alt="..." class="rounded-left">
+<img src="..." alt="..." class="rounded-circle">
+<img src="..." alt="..." class="rounded-0">
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/clearfix.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/clearfix.md
new file mode 100644
index 000000000..f4cb084bf
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/clearfix.md
@@ -0,0 +1,39 @@
+---
+layout: docs
+title: Clearfix
+description: Quickly and easily clear floated content within a container by adding a clearfix utility.
+group: utilities
+toc: true
+---
+
+Easily clear `float`s by adding `.clearfix` **to the parent element**. Can also be used as a mixin.
+
+{% highlight html %}
+<div class="clearfix">...</div>
+{% endhighlight %}
+
+{% highlight scss %}
+// Mixin itself
+@mixin clearfix() {
+  &::after {
+    display: block;
+    content: "";
+    clear: both;
+  }
+}
+
+// Usage as a mixin
+.element {
+  @include clearfix;
+}
+{% endhighlight %}
+
+The following example shows how the clearfix can be used. Without the clearfix the wrapping div would not span around the buttons which would cause a broken layout.
+
+{% capture example %}
+<div class="bg-info clearfix">
+  <button type="button" class="btn btn-secondary float-left">Example Button floated left</button>
+  <button type="button" class="btn btn-secondary float-right">Example Button floated right</button>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/close-icon.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/close-icon.md
new file mode 100644
index 000000000..a848c012e
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/close-icon.md
@@ -0,0 +1,16 @@
+---
+layout: docs
+title: Close icon
+description: Use a generic close icon for dismissing content like modals and alerts.
+group: utilities
+toc: true
+---
+
+**Be sure to include text for screen readers**, as we've done with `aria-label`.
+
+{% capture example %}
+<button type="button" class="close" aria-label="Close">
+  <span aria-hidden="true">&times;</span>
+</button>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/colors.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/colors.md
new file mode 100644
index 000000000..573782644
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/colors.md
@@ -0,0 +1,61 @@
+---
+layout: docs
+title: Colors
+description: Convey meaning through color with a handful of color utility classes. Includes support for styling links with hover states, too.
+group: utilities
+toc: true
+---
+
+## Color
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<p class="text-{{ color.name }}{% if color.name == "light" %} bg-dark{% endif %}">.text-{{ color.name }}</p>{% endfor %}
+<p class="text-body">.text-body</p>
+<p class="text-muted">.text-muted</p>
+<p class="text-white bg-dark">.text-white</p>
+<p class="text-black-50">.text-black-50</p>
+<p class="text-white-50 bg-dark">.text-white-50</p>
+{% endcapture %}
+{% include example.html content=example %}
+
+Contextual text classes also work well on anchors with the provided hover and focus states. **Note that the `.text-white` and `.text-muted` class has no additional link styling beyond underline.**
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<p><a href="#" class="text-{{ color.name }}{% if color.name == "light" %} bg-dark{% endif %}">{{ color.name | capitalize }} link</a></p>{% endfor %}
+<p><a href="#" class="text-muted">Muted link</a></p>
+<p><a href="#" class="text-white bg-dark">White link</a></p>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Background color
+
+Similar to the contextual text color classes, easily set the background of an element to any contextual class. Anchor components will darken on hover, just like the text classes. Background utilities **do not set `color`**, so in some cases you'll want to use `.text-*` utilities.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<div class="p-3 mb-2 bg-{{ color.name }} {% if color.name == "light" or color.name == "warning" %}text-dark{% else %}text-white{% endif %}">.bg-{{ color.name }}</div>{% endfor %}
+<div class="p-3 mb-2 bg-white text-dark">.bg-white</div>
+<div class="p-3 mb-2 bg-transparent text-dark">.bg-transparent</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Background gradient
+
+When `$enable-gradients` is set to true, you'll be able to use `.bg-gradient-` utility classes. **By default, `$enable-gradients` is disabled and the example below is intentionally broken.** This is done for easier customization from the moment you start using Bootstrap. [Learn about our Sass options]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/theming/#sass-options) to enable these classes and more.
+
+{% capture example %}
+{% for color in site.data.theme-colors %}
+<div class="p-3 mb-2 bg-gradient-{{ color.name }} {% if color.name == "light" or color.name == "warning" %}text-dark{% else %}text-white{% endif %}">.bg-gradient-{{ color.name }}</div>{% endfor %}
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture callout %}
+#### Dealing with specificity
+
+Sometimes contextual classes cannot be applied due to the specificity of another selector. In some cases, a sufficient workaround is to wrap your element's content in a `<div>` with the class.
+{% endcapture %}
+{% include callout.html content=callout type="info" %}
+
+{% include callout-warning-color-assistive-technologies.md %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/display.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/display.md
new file mode 100644
index 000000000..dd77a876c
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/display.md
@@ -0,0 +1,100 @@
+---
+layout: docs
+title: Display property
+description: Quickly and responsively toggle the display value of components and more with our display utilities. Includes support for some of the more common values, as well as some extras for controlling display when printing.
+group: utilities
+toc: true
+---
+
+## How it works
+
+Change the value of the [`display` property](https://developer.mozilla.org/en-US/docs/Web/CSS/display) with our responsive display utility classes. We purposely support only a subset of all possible values for `display`. Classes can be combined for various effects as you need.
+
+## Notation
+
+Display utility classes that apply to all [breakpoints]({{ site.baseurl }}/docs/{{ site.docs_version }}/layout/overview/#responsive-breakpoints), from `xs` to `xl`, have no breakpoint abbreviation in them. This is because those classes are applied from `min-width: 0;` and up, and thus are not bound by a media query. The remaining breakpoints, however, do include a breakpoint abbreviation.
+
+As such, the classes are named using the format:
+
+* `.d-{value}` for `xs`
+* `.d-{breakpoint}-{value}` for `sm`, `md`, `lg`, and `xl`.
+
+Where *value* is one of:
+
+* `none`
+* `inline`
+* `inline-block`
+* `block`
+* `table`
+* `table-cell`
+* `table-row`
+* `flex`
+* `inline-flex`
+
+The media queries effect screen widths with the given breakpoint *or larger*. For example, `.d-lg-none` sets `display: none;` on both `lg` and `xl` screens.
+
+## Examples
+
+{% capture example %}
+<div class="d-inline p-2 bg-primary text-white">d-inline</div>
+<div class="d-inline p-2 bg-dark text-white">d-inline</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<span class="d-block p-2 bg-primary text-white">d-block</span>
+<span class="d-block p-2 bg-dark text-white">d-block</span>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Hiding elements
+
+For faster mobile-friendly development, use responsive display classes for showing and hiding elements by device. Avoid creating entirely different versions of the same site, instead hide element responsively for each screen size.
+
+To hide elements simply use the `.d-none` class or one of the `.d-{sm,md,lg,xl}-none` classes for any responsive screen variation.
+
+To show an element only on a given interval of screen sizes you can combine one `.d-*-none` class with a `.d-*-*` class, for example `.d-none .d-md-block .d-xl-none` will hide the element for all screen sizes except on medium and large devices.
+
+| Screen Size        | Class |
+| ---                | --- |
+| Hidden on all      | `.d-none` |
+| Hidden only on xs  | `.d-none .d-sm-block` |
+| Hidden only on sm  | `.d-sm-none .d-md-block` |
+| Hidden only on md  | `.d-md-none .d-lg-block` |
+| Hidden only on lg  | `.d-lg-none .d-xl-block` |
+| Hidden only on xl  | `.d-xl-none` |
+| Visible on all     | `.d-block` |
+| Visible only on xs | `.d-block .d-sm-none` |
+| Visible only on sm | `.d-none .d-sm-block .d-md-none` |
+| Visible only on md | `.d-none .d-md-block .d-lg-none` |
+| Visible only on lg | `.d-none .d-lg-block .d-xl-none` |
+| Visible only on xl | `.d-none .d-xl-block` |
+
+{% capture example %}
+<div class="d-lg-none">hide on screens wider than lg</div>
+<div class="d-none d-lg-block">hide on screens smaller than lg</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Display in print
+
+Change the `display` value of elements when printing with our print display utility classes. Includes support for the same `display` values as our responsive `.d-*` utilities.
+
+- `.d-print-none`
+- `.d-print-inline`
+- `.d-print-inline-block`
+- `.d-print-block`
+- `.d-print-table`
+- `.d-print-table-row`
+- `.d-print-table-cell`
+- `.d-print-flex`
+- `.d-print-inline-flex`
+
+The print and display classes can be combined.
+
+{% capture example %}
+<div class="d-print-none">Screen Only (Hide on print only)</div>
+<div class="d-none d-print-block">Print Only (Hide on screen only)</div>
+<div class="d-none d-lg-block d-print-block">Hide up to large on screen, but always show on print</div>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/embed.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/embed.md
new file mode 100644
index 000000000..4713c598c
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/embed.md
@@ -0,0 +1,50 @@
+---
+layout: docs
+title: Embeds
+description: Create responsive video or slideshow embeds based on the width of the parent by creating an intrinsic ratio that scales on any device.
+group: utilities
+toc: true
+---
+
+## About
+
+Rules are directly applied to `<iframe>`, `<embed>`, `<video>`, and `<object>` elements; optionally use an explicit descendant class `.embed-responsive-item` when you want to match the styling for other attributes.
+
+**Pro-Tip!** You don't need to include `frameborder="0"` in your `<iframe>`s as we override that for you.
+
+## Example
+
+Wrap any embed like an `<iframe>` in a parent element with `.embed-responsive` and an aspect ratio. The `.embed-responsive-item` isn't strictly required, but we encourage it.
+
+{% capture example %}
+<div class="embed-responsive embed-responsive-16by9">
+  <iframe class="embed-responsive-item" src="https://www.youtube.com/embed/zpOULjyy-n8?rel=0" allowfullscreen></iframe>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Aspect ratios
+
+Aspect ratios can be customized with modifier classes.
+
+{% highlight html %}
+<!-- 21:9 aspect ratio -->
+<div class="embed-responsive embed-responsive-21by9">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
+
+<!-- 16:9 aspect ratio -->
+<div class="embed-responsive embed-responsive-16by9">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
+
+<!-- 4:3 aspect ratio -->
+<div class="embed-responsive embed-responsive-4by3">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
+
+<!-- 1:1 aspect ratio -->
+<div class="embed-responsive embed-responsive-1by1">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/flex.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/flex.md
new file mode 100644
index 000000000..83e950cf7
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/flex.md
@@ -0,0 +1,570 @@
+---
+layout: docs
+title: Flex
+description: Quickly manage the layout, alignment, and sizing of grid columns, navigation, components, and more with a full suite of responsive flexbox utilities. For more complex implementations, custom CSS may be necessary.
+group: utilities
+toc: true
+---
+
+## Enable flex behaviors
+
+Apply `display` utilities to create a flexbox container and transform **direct children elements** into flex items. Flex containers and items are able to be modified further with additional flex properties.
+
+{% capture example %}
+<div class="d-flex p-2 bd-highlight">I'm a flexbox container!</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div class="d-inline-flex p-2 bd-highlight">I'm an inline flexbox container!</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Responsive variations also exist for `.d-flex` and `.d-inline-flex`.
+
+{% for bp in site.data.breakpoints %}
+- `.d{{ bp.abbr }}-flex`
+- `.d{{ bp.abbr }}-inline-flex`{% endfor %}
+
+## Direction
+
+Set the direction of flex items in a flex container with direction utilities. In most cases you can omit the horizontal class here as the browser default is `row`. However, you may encounter situations where you needed to explicitly set this value (like responsive layouts).
+
+Use `.flex-row` to set a horizontal direction (the browser default), or `.flex-row-reverse` to start the horizontal direction from the opposite side.
+
+{% capture example %}
+<div class="d-flex flex-row bd-highlight mb-3">
+  <div class="p-2 bd-highlight">Flex item 1</div>
+  <div class="p-2 bd-highlight">Flex item 2</div>
+  <div class="p-2 bd-highlight">Flex item 3</div>
+</div>
+<div class="d-flex flex-row-reverse bd-highlight">
+  <div class="p-2 bd-highlight">Flex item 1</div>
+  <div class="p-2 bd-highlight">Flex item 2</div>
+  <div class="p-2 bd-highlight">Flex item 3</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Use `.flex-column` to set a vertical direction, or `.flex-column-reverse`  to start the vertical direction from the opposite side.
+
+{% capture example %}
+<div class="d-flex flex-column bd-highlight mb-3">
+  <div class="p-2 bd-highlight">Flex item 1</div>
+  <div class="p-2 bd-highlight">Flex item 2</div>
+  <div class="p-2 bd-highlight">Flex item 3</div>
+</div>
+<div class="d-flex flex-column-reverse bd-highlight">
+  <div class="p-2 bd-highlight">Flex item 1</div>
+  <div class="p-2 bd-highlight">Flex item 2</div>
+  <div class="p-2 bd-highlight">Flex item 3</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Responsive variations also exist for `flex-direction`.
+
+{% for bp in site.data.breakpoints %}
+- `.flex{{ bp.abbr }}-row`
+- `.flex{{ bp.abbr }}-row-reverse`
+- `.flex{{ bp.abbr }}-column`
+- `.flex{{ bp.abbr }}-column-reverse`{% endfor %}
+
+## Justify content
+
+Use `justify-content` utilities on flexbox containers to change the alignment of flex items on the main axis (the x-axis to start, y-axis if `flex-direction: column`). Choose from `start` (browser default), `end`, `center`, `between`, or `around`.
+
+<div class="bd-example">
+  <div class="d-flex justify-content-start bd-highlight mb-3">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex justify-content-end bd-highlight mb-3">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex justify-content-center bd-highlight mb-3">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex justify-content-between bd-highlight mb-3">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex justify-content-around bd-highlight">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex justify-content-start">...</div>
+<div class="d-flex justify-content-end">...</div>
+<div class="d-flex justify-content-center">...</div>
+<div class="d-flex justify-content-between">...</div>
+<div class="d-flex justify-content-around">...</div>
+{% endhighlight %}
+
+Responsive variations also exist for `justify-content`.
+
+{% for bp in site.data.breakpoints %}
+- `.justify-content{{ bp.abbr }}-start`
+- `.justify-content{{ bp.abbr }}-end`
+- `.justify-content{{ bp.abbr }}-center`
+- `.justify-content{{ bp.abbr }}-between`
+- `.justify-content{{ bp.abbr }}-around`{% endfor %}
+
+## Align items
+
+Use `align-items` utilities on flexbox containers to change the alignment of flex items on the cross axis (the y-axis to start, x-axis if `flex-direction: column`). Choose from `start`, `end`, `center`, `baseline`, or `stretch` (browser default).
+
+<div class="bd-example">
+  <div class="d-flex align-items-start bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex align-items-end bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex align-items-center bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex align-items-baseline bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex align-items-stretch bd-highlight" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex align-items-start">...</div>
+<div class="d-flex align-items-end">...</div>
+<div class="d-flex align-items-center">...</div>
+<div class="d-flex align-items-baseline">...</div>
+<div class="d-flex align-items-stretch">...</div>
+{% endhighlight %}
+
+Responsive variations also exist for `align-items`.
+
+{% for bp in site.data.breakpoints %}
+- `.align-items{{ bp.abbr }}-start`
+- `.align-items{{ bp.abbr }}-end`
+- `.align-items{{ bp.abbr }}-center`
+- `.align-items{{ bp.abbr }}-baseline`
+- `.align-items{{ bp.abbr }}-stretch`{% endfor %}
+
+## Align self
+
+Use `align-self` utilities on flexbox items to individually change their alignment on the cross axis (the y-axis to start, x-axis if `flex-direction: column`). Choose from the same options as `align-items`: `start`, `end`, `center`, `baseline`, or `stretch` (browser default).
+
+<div class="bd-example">
+  <div class="d-flex bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="align-self-start p-2 bd-highlight">Aligned flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="align-self-end p-2 bd-highlight">Aligned flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="align-self-center p-2 bd-highlight">Aligned flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex bd-highlight mb-3" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="align-self-baseline p-2 bd-highlight">Aligned flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+  <div class="d-flex bd-highlight" style="height: 100px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="align-self-stretch p-2 bd-highlight">Aligned flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="align-self-start">Aligned flex item</div>
+<div class="align-self-end">Aligned flex item</div>
+<div class="align-self-center">Aligned flex item</div>
+<div class="align-self-baseline">Aligned flex item</div>
+<div class="align-self-stretch">Aligned flex item</div>
+{% endhighlight %}
+
+Responsive variations also exist for `align-self`.
+
+{% for bp in site.data.breakpoints %}
+- `.align-self{{ bp.abbr }}-start`
+- `.align-self{{ bp.abbr }}-end`
+- `.align-self{{ bp.abbr }}-center`
+- `.align-self{{ bp.abbr }}-baseline`
+- `.align-self{{ bp.abbr }}-stretch`{% endfor %}
+
+## Fill
+
+Use the `.flex-fill` class on a series of sibling elements to force them into equal widths while taking up all available horizontal space. [Especially useful for equal-width, or justified, navigation.]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/navs/#working-with-flex-utilities)
+
+{% capture example %}
+<div class="d-flex bd-highlight">
+  <div class="p-2 flex-fill bd-highlight">Flex item</div>
+  <div class="p-2 flex-fill bd-highlight">Flex item</div>
+  <div class="p-2 flex-fill bd-highlight">Flex item</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Responsive variations also exist for `flex-fill`.
+
+{% for bp in site.data.breakpoints %}
+- `.flex{{ bp.abbr }}-fill`{% endfor %}
+
+## Grow and shrink
+
+Use `.flex-grow-*` utilities to toggle a flex item's ability to grow to fill available space. In the example below, the `.flex-grow-1` elements uses all available space it can, while allowing the remaining two flex items their necessary space.
+
+{% capture example %}
+<div class="d-flex bd-highlight">
+  <div class="p-2 flex-grow-1 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Third flex item</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Use `.flex-shrink-*` utilities to toggle a flex item's ability to shrink if necessary. In the example below, the second flex item with `.flex-shrink-1` is forced to wrap it's contents to a new line, "shrinking" to allow more space for the previous flex item with `.w-100`.
+
+{% capture example %}
+<div class="d-flex bd-highlight">
+  <div class="p-2 w-100 bd-highlight">Flex item</div>
+  <div class="p-2 flex-shrink-1 bd-highlight">Flex item</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Responsive variations also exist for `flex-grow` and `flex-shrink`.
+
+{% for bp in site.data.breakpoints %}
+- `.flex{{ bp.abbr }}-{grow|shrink}-0`
+- `.flex{{ bp.abbr }}-{grow|shrink}-1`{% endfor %}
+
+## Auto margins
+
+Flexbox can do some pretty awesome things when you mix flex alignments with auto margins. Shown below are three examples of controlling flex items via auto margins: default (no auto margin), pushing two items to the right (`.mr-auto`), and pushing two items to the left (`.ml-auto`).
+
+**Unfortunately, IE10 and IE11 do not properly support auto margins on flex items whose parent has a non-default `justify-content` value.** [See this StackOverflow answer](https://stackoverflow.com/a/37535548) for more details.
+
+{% capture example %}
+<div class="d-flex bd-highlight mb-3">
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+</div>
+
+<div class="d-flex bd-highlight mb-3">
+  <div class="mr-auto p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+</div>
+
+<div class="d-flex bd-highlight mb-3">
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="ml-auto p-2 bd-highlight">Flex item</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+### With align-items
+
+Vertically move one flex item to the top or bottom of a container by mixing `align-items`, `flex-direction: column`, and `margin-top: auto` or `margin-bottom: auto`.
+
+{% capture example %}
+<div class="d-flex align-items-start flex-column bd-highlight mb-3" style="height: 200px;">
+  <div class="mb-auto p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+</div>
+
+<div class="d-flex align-items-end flex-column bd-highlight mb-3" style="height: 200px;">
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="p-2 bd-highlight">Flex item</div>
+  <div class="mt-auto p-2 bd-highlight">Flex item</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Wrap
+
+Change how flex items wrap in a flex container. Choose from no wrapping at all (the browser default) with `.flex-nowrap`, wrapping with `.flex-wrap`, or reverse wrapping with `.flex-wrap-reverse`.
+
+<div class="bd-example">
+  <div class="d-flex flex-nowrap bd-highlight" style="width: 8rem;">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex flex-nowrap">
+  ...
+</div>
+{% endhighlight %}
+
+<div class="bd-example">
+  <div class="d-flex flex-wrap bd-highlight">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex flex-wrap">
+  ...
+</div>
+{% endhighlight %}
+
+<div class="bd-example">
+  <div class="d-flex flex-wrap-reverse bd-highlight">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex flex-wrap-reverse">
+  ...
+</div>
+{% endhighlight %}
+
+
+Responsive variations also exist for `flex-wrap`.
+
+{% for bp in site.data.breakpoints %}
+- `.flex{{ bp.abbr }}-nowrap`
+- `.flex{{ bp.abbr }}-wrap`
+- `.flex{{ bp.abbr }}-wrap-reverse`{% endfor %}
+
+## Order
+
+Change the _visual_ order of specific flex items with a handful of `order` utilities. We only provide options for making an item first or last, as well as a reset to use the DOM order. As `order` takes any integer value (e.g., `5`), add custom CSS for any additional values needed.
+
+{% capture example %}
+<div class="d-flex flex-nowrap bd-highlight">
+  <div class="order-3 p-2 bd-highlight">First flex item</div>
+  <div class="order-2 p-2 bd-highlight">Second flex item</div>
+  <div class="order-1 p-2 bd-highlight">Third flex item</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+Responsive variations also exist for `order`.
+
+{% for bp in site.data.breakpoints %}{% for i in (0..12) %}
+- `.order{{ bp.abbr }}-{{ i }}`{% endfor %}{% endfor %}
+
+## Align content
+
+Use `align-content` utilities on flexbox containers to align flex items *together* on the cross axis. Choose from `start` (browser default), `end`, `center`, `between`, `around`, or `stretch`. To demonstrate these utilities, we've enforced `flex-wrap: wrap` and increased the number of flex items.
+
+**Heads up!** This property has no effect on single rows of flex items.
+
+<div class="bd-example">
+  <div class="d-flex align-content-start flex-wrap bd-highlight mb-3" style="height: 200px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex align-content-start flex-wrap">
+  ...
+</div>
+{% endhighlight %}
+
+<div class="bd-example">
+  <div class="d-flex align-content-end flex-wrap bd-highlight mb-3" style="height: 200px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex align-content-end flex-wrap">...</div>
+{% endhighlight %}
+
+<div class="bd-example">
+  <div class="d-flex align-content-center flex-wrap bd-highlight mb-3" style="height: 200px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex align-content-center flex-wrap">...</div>
+{% endhighlight %}
+
+<div class="bd-example">
+  <div class="d-flex align-content-between flex-wrap bd-highlight mb-3" style="height: 200px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex align-content-between flex-wrap">...</div>
+{% endhighlight %}
+
+<div class="bd-example">
+  <div class="d-flex align-content-around flex-wrap bd-highlight mb-3" style="height: 200px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex align-content-around flex-wrap">...</div>
+{% endhighlight %}
+
+<div class="bd-example">
+  <div class="d-flex align-content-stretch flex-wrap bd-highlight mb-3" style="height: 200px">
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+    <div class="p-2 bd-highlight">Flex item</div>
+  </div>
+</div>
+
+{% highlight html %}
+<div class="d-flex align-content-stretch flex-wrap">...</div>
+{% endhighlight %}
+
+Responsive variations also exist for `align-content`.
+
+{% for bp in site.data.breakpoints %}
+- `.align-content{{ bp.abbr }}-start`
+- `.align-content{{ bp.abbr }}-end`
+- `.align-content{{ bp.abbr }}-center`
+- `.align-content{{ bp.abbr }}-around`
+- `.align-content{{ bp.abbr }}-stretch`{% endfor %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/float.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/float.md
new file mode 100644
index 000000000..ec05d3ec7
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/float.md
@@ -0,0 +1,57 @@
+---
+layout: docs
+title: Float
+description: Toggle floats on any element, across any breakpoint, using our responsive float utilities.
+group: utilities
+toc: true
+---
+
+## Overview
+
+These utility classes float an element to the left or right, or disable floating, based on the current viewport size using the [CSS `float` property](https://developer.mozilla.org/en-US/docs/Web/CSS/float). `!important` is included to avoid specificity issues. These use the same viewport breakpoints as our grid system. Please be aware float utilities have no affect on flex items.
+
+## Classes
+
+Toggle a float with a class:
+
+{% capture example %}
+<div class="float-left">Float left on all viewport sizes</div><br>
+<div class="float-right">Float right on all viewport sizes</div><br>
+<div class="float-none">Don't float on all viewport sizes</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Mixins
+
+Or by Sass mixin:
+
+{% highlight scss %}
+.element {
+  @include float-left;
+}
+.another-element {
+  @include float-right;
+}
+.one-more {
+  @include float-none;
+}
+{% endhighlight %}
+
+## Responsive
+
+Responsive variations also exist for each `float` value.
+
+{% capture example %}
+<div class="float-sm-left">Float left on viewports sized SM (small) or wider</div><br>
+<div class="float-md-left">Float left on viewports sized MD (medium) or wider</div><br>
+<div class="float-lg-left">Float left on viewports sized LG (large) or wider</div><br>
+<div class="float-xl-left">Float left on viewports sized XL (extra-large) or wider</div><br>
+{% endcapture %}
+{% include example.html content=example %}
+
+Here are all the support classes;
+
+{% for bp in site.data.breakpoints %}
+- `.float{{ bp.abbr }}-left`
+- `.float{{ bp.abbr }}-right`
+- `.float{{ bp.abbr }}-none`{% endfor %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/image-replacement.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/image-replacement.md
new file mode 100644
index 000000000..0d5a4d30c
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/image-replacement.md
@@ -0,0 +1,33 @@
+---
+layout: docs
+title: Image replacement
+description: Swap text for background images with the image replacement class.
+group: utilities
+toc: true
+---
+
+{% capture callout %}
+##### Warning
+The `text-hide()` class and mixin has been deprecated as of v4.1. It will be removed entirely in v5.
+{% endcapture %}
+{% include callout.html content=callout type="warning" %}
+
+Utilize the `.text-hide` class or mixin to help replace an element's text content with a background image.
+
+{% highlight html %}
+<h1 class="text-hide">Custom heading</h1>
+{% endhighlight %}
+
+{% highlight scss %}
+// Usage as a mixin
+.heading {
+  @include text-hide;
+}
+{% endhighlight %}
+
+Use the `.text-hide` class to maintain the accessibility and SEO benefits of heading tags, but want to utilize a `background-image` instead of text.
+
+{% capture example %}
+<h1 class="text-hide" style="background-image: url('/docs/{{ site.docs_version }}/assets/brand/bootstrap-solid.svg'); width: 50px; height: 50px;">Bootstrap</h1>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/position.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/position.md
new file mode 100644
index 000000000..c819df080
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/position.md
@@ -0,0 +1,45 @@
+---
+layout: docs
+title: Position
+description: Use these shorthand utilities for quickly configuring the position of an element.
+group: utilities
+toc: true
+---
+
+## Common values
+
+Quick positioning classes are available, though they are not responsive.
+
+{% highlight html %}
+<div class="position-static">...</div>
+<div class="position-relative">...</div>
+<div class="position-absolute">...</div>
+<div class="position-fixed">...</div>
+<div class="position-sticky">...</div>
+{% endhighlight %}
+
+## Fixed top
+
+Position an element at the top of the viewport, from edge to edge. Be sure you understand the ramifications of fixed position in your project; you may need to add additional CSS.
+
+{% highlight html %}
+<div class="fixed-top">...</div>
+{% endhighlight %}
+
+## Fixed bottom
+
+Position an element at the bottom of the viewport, from edge to edge. Be sure you understand the ramifications of fixed position in your project; you may need to add additional CSS.
+
+{% highlight html %}
+<div class="fixed-bottom">...</div>
+{% endhighlight %}
+
+## Sticky top
+
+Position an element at the top of the viewport, from edge to edge, but only after you scroll past it. The `.sticky-top` utility uses CSS's `position: sticky`, which isn't fully supported in all browsers.
+
+**IE11 and IE10 will render `position: sticky` as `position: relative`.** As such, we wrap the styles in a `@supports` query, limiting the stickiness to only browsers that can render it properly.
+
+{% highlight html %}
+<div class="sticky-top">...</div>
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/screenreaders.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/screenreaders.md
new file mode 100644
index 000000000..311102c6a
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/screenreaders.md
@@ -0,0 +1,26 @@
+---
+layout: docs
+title: Screenreaders
+description: Use screenreader utilities to hide elements on all devices except screen readers.
+group: utilities
+toc: true
+---
+
+Hide an element to all devices **except screen readers** with `.sr-only`. Combine `.sr-only` with `.sr-only-focusable` to show the element again when it's focused (e.g. by a keyboard-only user). Can also be used as mixins.
+
+{%- comment -%}
+Necessary for following [accessibility best practices]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/#accessibility).
+{%- endcomment -%}
+
+{% capture example %}
+<a class="sr-only sr-only-focusable" href="#content">Skip to main content</a>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% highlight scss %}
+// Usage as a mixin
+.skip-navigation {
+  @include sr-only;
+  @include sr-only-focusable;
+}
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/shadows.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/shadows.md
new file mode 100644
index 000000000..5e8f5a890
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/shadows.md
@@ -0,0 +1,19 @@
+---
+layout: docs
+title: Shadows
+description: Add or remove shadows to elements with box-shadow utilities.
+group: utilities
+toc: false
+---
+
+## Examples
+
+While shadows on components are disabled by default in Bootstrap and can be enabled via `$enable-shadows`, you can also quickly add or remove a shadow with our `box-shadow` utility classes. Includes support for `.shadow-none` and three default sizes (which have associated variables to match).
+
+{% capture example %}
+<div class="shadow-none p-3 mb-5 bg-light rounded">No shadow</div>
+<div class="shadow-sm p-3 mb-5 bg-white rounded">Small shadow</div>
+<div class="shadow p-3 mb-5 bg-white rounded">Regular shadow</div>
+<div class="shadow-lg p-3 mb-5 bg-white rounded">Larger shadow</div>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/sizing.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/sizing.md
new file mode 100644
index 000000000..e7e578a64
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/sizing.md
@@ -0,0 +1,43 @@
+---
+layout: docs
+title: Sizing
+description: Easily make an element as wide or as tall (relative to its parent) with our width and height utilities.
+group: utilities
+toc: true
+---
+
+Width and height utilities are generated from the `$sizes` Sass map in `_variables.scss`. Includes support for `25%`, `50%`, `75%`, `100%`, and `auto` by default. Modify those values as you need to generate different utilities here.
+
+{% capture example %}
+<div class="w-25 p-3" style="background-color: #eee;">Width 25%</div>
+<div class="w-50 p-3" style="background-color: #eee;">Width 50%</div>
+<div class="w-75 p-3" style="background-color: #eee;">Width 75%</div>
+<div class="w-100 p-3" style="background-color: #eee;">Width 100%</div>
+<div class="w-auto p-3" style="background-color: #eee;">Width auto</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div style="height: 100px; background-color: rgba(255,0,0,0.1);">
+  <div class="h-25 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 25%</div>
+  <div class="h-50 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 50%</div>
+  <div class="h-75 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 75%</div>
+  <div class="h-100 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 100%</div>
+  <div class="h-auto d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height auto</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+You can also use `max-width: 100%;` and `max-height: 100%;` utilities as needed.
+
+{% capture example %}
+<img class="mw-100" data-src="holder.js/1000px100?text=Max-width%20%3D%20100%25" alt="Max-width 100%">
+{% endcapture %}
+{% include example.html content=example %}
+
+{% capture example %}
+<div style="height: 100px; background-color: rgba(255,0,0,0.1);">
+  <div class="mh-100" style="width: 100px; height: 200px; background-color: rgba(0,0,255,0.1);">Max-height 100%</div>
+</div>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/spacing.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/spacing.md
new file mode 100644
index 000000000..b374748e0
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/spacing.md
@@ -0,0 +1,83 @@
+---
+layout: docs
+title: Spacing
+description: Bootstrap includes a wide range of shorthand responsive margin and padding utility classes to modify an element's appearance.
+group: utilities
+toc: true
+---
+
+## How it works
+
+Assign responsive-friendly `margin` or `padding` values to an element or a subset of its sides with shorthand classes. Includes support for individual properties, all properties, and vertical and horizontal properties. Classes are built from a default Sass map ranging from `.25rem` to `3rem`.
+
+## Notation
+
+Spacing utilities that apply to all breakpoints, from `xs` to `xl`, have no breakpoint abbreviation in them. This is because those classes are applied from `min-width: 0` and up, and thus are not bound by a media query. The remaining breakpoints, however, do include a breakpoint abbreviation.
+
+The classes are named using the format `{property}{sides}-{size}` for `xs` and `{property}{sides}-{breakpoint}-{size}` for `sm`, `md`, `lg`, and `xl`.
+
+Where *property* is one of:
+
+* `m` - for classes that set `margin`
+* `p` - for classes that set `padding`
+
+Where *sides* is one of:
+
+* `t` - for classes that set `margin-top` or `padding-top`
+* `b` - for classes that set `margin-bottom` or `padding-bottom`
+* `l` - for classes that set `margin-left` or `padding-left`
+* `r` - for classes that set `margin-right` or `padding-right`
+* `x` - for classes that set both `*-left` and `*-right`
+* `y` - for classes that set both `*-top` and `*-bottom`
+* blank - for classes that set a `margin` or `padding` on all 4 sides of the element
+
+Where *size* is one of:
+
+* `0` - for classes that eliminate the `margin` or `padding` by setting it to `0`
+* `1` - (by default) for classes that set the `margin` or `padding` to `$spacer * .25`
+* `2` - (by default) for classes that set the `margin` or `padding` to `$spacer * .5`
+* `3` - (by default) for classes that set the `margin` or `padding` to `$spacer`
+* `4` - (by default) for classes that set the `margin` or `padding` to `$spacer * 1.5`
+* `5` - (by default) for classes that set the `margin` or `padding` to `$spacer * 3`
+* `auto` - for classes that set the `margin` to auto
+
+(You can add more sizes by adding entries to the `$spacers` Sass map variable.)
+
+## Examples
+
+Here are some representative examples of these classes:
+
+{% highlight scss %}
+.mt-0 {
+  margin-top: 0 !important;
+}
+
+.ml-1 {
+  margin-left: ($spacer * .25) !important;
+}
+
+.px-2 {
+  padding-left: ($spacer * .5) !important;
+  padding-right: ($spacer * .5) !important;
+}
+
+.p-3 {
+  padding: $spacer !important;
+}
+{% endhighlight %}
+
+### Horizontal centering
+
+Additionally, Bootstrap also includes an `.mx-auto` class for horizontally centering fixed-width block level content—that is, content that has `display: block` and a `width` set—by setting the horizontal margins to `auto`.
+
+<div class="bd-example">
+  <div class="mx-auto" style="width: 200px; background-color: rgba(86,61,124,.15);">
+    Centered element
+  </div>
+</div>
+
+{% highlight html %}
+<div class="mx-auto" style="width: 200px;">
+  Centered element
+</div>
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/text.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/text.md
new file mode 100644
index 000000000..ab42dc90b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/text.md
@@ -0,0 +1,92 @@
+---
+layout: docs
+title: Text
+description: Documentation and examples for common text utilities to control alignment, wrapping, weight, and more.
+group: utilities
+toc: true
+---
+
+## Text alignment
+
+Easily realign text to components with text alignment classes.
+
+{% capture example %}
+<p class="text-justify">Ambitioni dedisse scripsisse iudicaretur. Cras mattis iudicium purus sit amet fermentum. Donec sed odio operae, eu vulputate felis rhoncus. Praeterea iter est quasdam res quas ex communi. At nos hinc posthac, sitientis piros Afros. Petierunt uti sibi concilium totius Galliae in diem certam indicere. Cras mattis iudicium purus sit amet fermentum.</p>
+{% endcapture %}
+{% include example.html content=example %}
+
+For left, right, and center alignment, responsive classes are available that use the same viewport width breakpoints as the grid system.
+
+{% capture example %}
+<p class="text-left">Left aligned text on all viewport sizes.</p>
+<p class="text-center">Center aligned text on all viewport sizes.</p>
+<p class="text-right">Right aligned text on all viewport sizes.</p>
+
+<p class="text-sm-left">Left aligned text on viewports sized SM (small) or wider.</p>
+<p class="text-md-left">Left aligned text on viewports sized MD (medium) or wider.</p>
+<p class="text-lg-left">Left aligned text on viewports sized LG (large) or wider.</p>
+<p class="text-xl-left">Left aligned text on viewports sized XL (extra-large) or wider.</p>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Text wrapping and overflow
+
+Prevent text from wrapping with a `.text-nowrap` class.
+
+{% capture example %}
+<div class="text-nowrap bd-highlight" style="width: 8rem;">
+  This text should overflow the parent.
+</div>
+{% endcapture %}
+{% include example.html content=example %}
+
+For longer content, you can add a `.text-truncate` class to truncate the text with an ellipsis. **Requires `display: inline-block` or `display: block`.**
+
+{% capture example %}
+<!-- Block level -->
+<div class="row">
+  <div class="col-2 text-truncate">
+    Praeterea iter est quasdam res quas ex communi.
+  </div>
+</div>
+
+<!-- Inline level -->
+<span class="d-inline-block text-truncate" style="max-width: 150px;">
+  Praeterea iter est quasdam res quas ex communi.
+</span>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Text transform
+
+Transform text in components with text capitalization classes.
+
+{% capture example %}
+<p class="text-lowercase">Lowercased text.</p>
+<p class="text-uppercase">Uppercased text.</p>
+<p class="text-capitalize">CapiTaliZed text.</p>
+{% endcapture %}
+{% include example.html content=example %}
+
+Note how `text-capitalize` only changes the first letter of each word, leaving the case of any other letters unaffected.
+
+## Font weight and italics
+
+Quickly change the weight (boldness) of text or italicize text.
+
+{% capture example %}
+<p class="font-weight-bold">Bold text.</p>
+<p class="font-weight-normal">Normal weight text.</p>
+<p class="font-weight-light">Light weight text.</p>
+<p class="font-italic">Italic text.</p>
+{% endcapture %}
+{% include example.html content=example %}
+
+## Monospace
+
+Change a selection to our monospace font stack with `.text-monospace`.
+
+{% capture example %}
+<p class="text-monospace">This is in monospace</p>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/vertical-align.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/vertical-align.md
new file mode 100644
index 000000000..bc4f0b950
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/vertical-align.md
@@ -0,0 +1,40 @@
+---
+layout: docs
+title: Vertical alignment
+description: Easily change the vertical alignment of inline, inline-block, inline-table, and table cell elements.
+group: utilities
+---
+
+Change the alignment of elements with the [`vertical-alignment`](https://developer.mozilla.org/en-US/docs/Web/CSS/vertical-align) utilities. Please note that vertical-align only affects inline, inline-block, inline-table, and table cell elements.
+
+Choose from `.align-baseline`, `.align-top`, `.align-middle`, `.align-bottom`, `.align-text-bottom`, and `.align-text-top` as needed.
+
+With inline elements:
+
+{% capture example %}
+<span class="align-baseline">baseline</span>
+<span class="align-top">top</span>
+<span class="align-middle">middle</span>
+<span class="align-bottom">bottom</span>
+<span class="align-text-top">text-top</span>
+<span class="align-text-bottom">text-bottom</span>
+{% endcapture %}
+{% include example.html content=example %}
+
+With table cells:
+
+{% capture example %}
+<table style="height: 100px;">
+  <tbody>
+    <tr>
+      <td class="align-baseline">baseline</td>
+      <td class="align-top">top</td>
+      <td class="align-middle">middle</td>
+      <td class="align-bottom">bottom</td>
+      <td class="align-text-top">text-top</td>
+      <td class="align-text-bottom">text-bottom</td>
+    </tr>
+  </tbody>
+</table>
+{% endcapture %}
+{% include example.html content=example %}
diff --git a/vendor/twbs/bootstrap/site/docs/4.1/utilities/visibility.md b/vendor/twbs/bootstrap/site/docs/4.1/utilities/visibility.md
new file mode 100644
index 000000000..cb02e1b88
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.1/utilities/visibility.md
@@ -0,0 +1,33 @@
+---
+layout: docs
+title: Visibility
+description: Control the visibility, without modifying the display, of elements with visibility utilities.
+group: utilities
+---
+
+Set the `visibility` of elements with our visibility utilities. These utility classes do not modify the `display` value at all and do not affect layout – `.invisible` elements still take up space in the page. Content will be hidden both visually and for assistive technology/screen reader users.
+
+Apply `.visible` or `.invisible` as needed.
+
+{% highlight html %}
+<div class="visible">...</div>
+<div class="invisible">...</div>
+{% endhighlight %}
+
+{% highlight scss %}
+// Class
+.visible {
+  visibility: visible;
+}
+.invisible {
+  visibility: hidden;
+}
+
+// Usage as a mixin
+.element {
+  @include invisible(visible);
+}
+.element {
+  @include invisible(hidden);
+}
+{% endhighlight %}
diff --git a/vendor/twbs/bootstrap/site/index.html b/vendor/twbs/bootstrap/site/index.html
new file mode 100644
index 000000000..2c5dda44b
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/index.html
@@ -0,0 +1,83 @@
+---
+layout: home
+---
+
+<main class="bd-masthead" id="content" role="main">
+  <div class="container">
+    <div class="row align-items-center">
+      <div class="col-6 mx-auto col-md-6 order-md-2">
+        <img class="img-fluid mb-3 mb-md-0" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/bootstrap-stack.png" alt="" width="1024" height="860">
+      </div>
+      <div class="col-md-6 order-md-1 text-center text-md-left pr-md-5">
+        <h1 class="mb-3 bd-text-purple-bright">Bootstrap</h1>
+        <p class="lead">
+          Build responsive, mobile-first projects on the web with the world's most popular front-end component library.
+        </p>
+        <p class="lead mb-4">
+          Bootstrap is an open source toolkit for developing with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with our Sass variables and mixins, responsive grid system, extensive prebuilt components, and powerful plugins built on jQuery.
+        </p>
+        <div class="d-flex flex-column flex-md-row lead mb-3">
+          <a href="{{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/introduction/" class="btn btn-lg btn-bd-primary mb-3 mb-md-0 mr-md-3" onclick="ga('send', 'event', 'Jumbotron actions', 'Get started', 'Get started');">Get started</a>
+          <a href="{{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/" class="btn btn-lg btn-outline-secondary" onclick="ga('send', 'event', 'Jumbotron actions', 'Download', 'Download {{ site.current_version }}');">Download</a>
+        </div>
+        <p class="text-muted mb-0">
+          Currently v{{ site.current_version }}
+        </p>
+      </div>
+    </div>
+    {% include ads.html %}
+  </div>
+</main>
+
+<div class="masthead-followup row m-0 border border-white">
+  <div class="col-12 col-md-4 p-3 p-md-5 bg-light border border-white">
+    <!-- Icon by Bytesize https://github.com/danklammer/bytesize-icons -->
+    {% include icons/import.svg width="32" height="32" class="text-primary mb-2" %}
+    <h3>Installation</h3>
+    <p>Include Bootstrap's source Sass and JavaScript files via npm, Composer or Meteor. Package managed installs don't include documentation, but do include our build system and readme.</p>
+
+{% highlight sh %}
+npm install bootstrap
+{% endhighlight %}
+
+{% highlight sh %}
+gem install bootstrap -v {{ site.current_ruby_version }}
+{% endhighlight %}
+
+    <hr class="half-rule">
+    <a class="btn btn-outline-primary" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/">Read installation docs</a>
+  </div>
+
+  <div class="col-12 col-md-4 p-3 p-md-5 bg-light border border-white">
+    <!-- Icon by Bytesize https://github.com/danklammer/bytesize-icons -->
+    {% include icons/download.svg width="32" height="32" class="text-primary mb-2" %}
+    <h3>BootstrapCDN</h3>
+    <p>When you only need to include Bootstrap's compiled CSS or JS, you can use <a href="https://www.bootstrapcdn.com/">BootstrapCDN</a>.</p>
+
+<h5>CSS only</h5>
+{% highlight html %}
+<link rel="stylesheet" href="{{ site.cdn.css }}" integrity="{{ site.cdn.css_hash }}" crossorigin="anonymous">
+{% endhighlight %}
+
+<h5>JS, Popper.js, and jQuery</h5>
+{% highlight html %}
+<script src="{{ site.cdn.jquery }}" integrity="{{ site.cdn.jquery_hash }}" crossorigin="anonymous"></script>
+<script src="{{ site.cdn.popper }}" integrity="{{ site.cdn.popper_hash }}" crossorigin="anonymous"></script>
+<script src="{{ site.cdn.js }}" integrity="{{ site.cdn.js_hash }}" crossorigin="anonymous"></script>
+{% endhighlight %}
+    <hr class="half-rule">
+    <a class="btn btn-outline-primary" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/layout/overview/">Explore the docs</a>
+  </div>
+
+  <div class="col-12 col-md-4 p-3 p-md-5 bg-light border border-white">
+    <!-- Icon by Bytesize https://github.com/danklammer/bytesize-icons -->
+    {% include icons/lightning.svg width="32" height="32" class="text-primary mb-2" %}
+    <h3>Official Themes</h3>
+    <p>
+      Take Bootstrap 4 to the next level with official premium themes—toolkits built on Bootstrap with new components and plugins, docs, and build tools.
+    </p>
+    <img class="img-fluid mt-3 mx-auto" src="{{ site.baseurl }}/docs/{{ site.docs_version }}/assets/img/bootstrap-themes.png" alt="Bootstrap Themes" width="1024" height="388">
+    <hr class="half-rule">
+    <a href="{{ site.themes }}" class="btn btn-outline-primary">Browse themes</a>
+  </div>
+</div>
diff --git a/vendor/twbs/bootstrap/site/robots.txt b/vendor/twbs/bootstrap/site/robots.txt
new file mode 100644
index 000000000..aef3fa1f6
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/robots.txt
@@ -0,0 +1,9 @@
+---
+---
+
+# www.robotstxt.org/
+
+# Allow crawling of all content
+User-agent: *
+Disallow:
+Sitemap: {{ site.url }}/sitemap.xml
diff --git a/vendor/twbs/bootstrap/site/sw.js b/vendor/twbs/bootstrap/site/sw.js
new file mode 100644
index 000000000..bc67fee25
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/sw.js
@@ -0,0 +1,5 @@
+/* global workbox:false */
+
+self.importScripts('docs/4.1/assets/js/vendor/{fileName}')
+
+workbox.precaching.precacheAndRoute([])
author	Max Kostikov <max@kostikov.co>	2018-09-28 15:46:14 +0200
committer	Max Kostikov <max@kostikov.co>	2018-09-28 15:46:14 +0200
commit	4a904fa3a8af1c101ede76657249fb7eb47faf60 (patch)
tree	544509813fb68579ef2b556ce879a971d183269a /vendor/twbs/bootstrap/site
parent	f5f6ec3d71acb3e0488386819d5060e59331ec23 (diff)
parent	c13d7e29ef9676b0f0e4ae23aa52e203f4ad8895 (diff)
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