update bootstrap to version 4.3.1

15 files changed, 137 insertions, 455 deletions

diff --git a/vendor/twbs/bootstrap/build/.htmllintrc b/vendor/twbs/bootstrap/build/.htmllintrc
deleted file mode 100644
index d5cf54f5b..000000000
--- a/vendor/twbs/bootstrap/build/.htmllintrc
+++ /dev/null
@@ -1,44 +0,0 @@
-{
-  "attr-bans": ["align", "background", "bgcolor", "border", "frameborder", "longdesc", "marginwidth", "marginheight", "scrolling"],
-  "attr-name-style": false,
-  "attr-no-dup": true,
-  "attr-no-unsafe-char": true,
-  "attr-quote-style": "double",
-  "attr-req-value": true,
-  "attr-validate": false,
-  "class-no-dup": true,
-  "class-style": "none",
-  "doctype-first": true,
-  "doctype-html5": true,
-  "fig-req-figcaption": false,
-  "focusable-tabindex-style": true,
-  "head-req-title": true,
-  "head-valid-content-model": false,
-  "href-style": false,
-  "html-req-lang": true,
-  "html-valid-content-model": false,
-  "id-class-ignore-regex": "(onclick|content|[a-z]+([A-Z][a-z])+)",
-  "id-class-no-ad": true,
-  "id-class-style": false,
-  "id-no-dup": true,
-  "img-req-alt": "allownull",
-  "img-req-src": false,
-  "indent-style": "spaces",
-  "indent-width": 2,
-  "input-radio-req-name": false,
-  "input-req-label": false,
-  "label-req-for": true,
-  "lang-style": "case",
-  "line-no-trailing-whitespace": false,
-  "line-end-style": "lf",
-  "spec-char-escape": false,
-  "table-req-header": false,
-  "tag-bans": ["b", "i"],
-  "tag-close": true,
-  "tag-name-lowercase": true,
-  "tag-name-match": true,
-  "tag-self-close": false,
-  "text-ignore-regex": false,
-  "title-max-len": 70,
-  "title-no-dup": true
-}
diff --git a/vendor/twbs/bootstrap/build/banner.js b/vendor/twbs/bootstrap/build/banner.js
new file mode 100644
index 000000000..453fc3b6e
--- /dev/null
+++ b/vendor/twbs/bootstrap/build/banner.js
@@ -0,0 +1,14 @@
+'use strict'
+
+const pkg = require('../package.json')
+const year = new Date().getFullYear()
+
+function getBanner(pluginFilename) {
+  return `/*!
+  * Bootstrap${pluginFilename ? ` ${pluginFilename}` : ''} v${pkg.version} (${pkg.homepage})
+  * Copyright 2011-${year} ${pkg.author}
+  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+  */`
+}
+
+module.exports = getBanner
diff --git a/vendor/twbs/bootstrap/build/build-plugins.js b/vendor/twbs/bootstrap/build/build-plugins.js
index 22a179066..abcbc5e2f 100644
--- a/vendor/twbs/bootstrap/build/build-plugins.js
+++ b/vendor/twbs/bootstrap/build/build-plugins.js
@@ -1,17 +1,18 @@
 /*!
  * Script to build our plugins to use them separately.
- * Copyright 2018 The Bootstrap Authors
- * Copyright 2018 Twitter, Inc.
+ * Copyright 2019 The Bootstrap Authors
+ * Copyright 2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
 'use strict'
 
-const rollup  = require('rollup')
 const path    = require('path')
+const rollup  = require('rollup')
 const babel   = require('rollup-plugin-babel')
-const TEST    = process.env.NODE_ENV === 'test'
+const banner  = require('./banner.js')
 
+const TEST    = process.env.NODE_ENV === 'test'
 const plugins = [
   babel({
     exclude: 'node_modules/**', // Only transpile our source code
@@ -24,9 +25,6 @@ const plugins = [
     ]
   })
 ]
-
-const format = 'umd'
-const rootPath = !TEST ? '../js/dist/' : '../js/coverage/dist/'
 const bsPlugins = {
   Alert: path.resolve(__dirname, '../js/src/alert.js'),
   Button: path.resolve(__dirname, '../js/src/button.js'),
@@ -37,45 +35,51 @@ const bsPlugins = {
   Popover: path.resolve(__dirname, '../js/src/popover.js'),
   ScrollSpy: path.resolve(__dirname, '../js/src/scrollspy.js'),
   Tab: path.resolve(__dirname, '../js/src/tab.js'),
+  Toast: path.resolve(__dirname, '../js/src/toast.js'),
   Tooltip: path.resolve(__dirname, '../js/src/tooltip.js'),
   Util: path.resolve(__dirname, '../js/src/util.js')
 }
+const rootPath = TEST ? '../js/coverage/dist/' : '../js/dist/'
+
+function build(plugin) {
+  console.log(`Building ${plugin} plugin...`)
 
-Object.keys(bsPlugins)
-  .forEach((pluginKey) => {
-    console.log(`Building ${pluginKey} plugin...`)
+  const external = ['jquery', 'popper.js']
+  const globals = {
+    jquery: 'jQuery', // Ensure we use jQuery which is always available even in noConflict mode
+    'popper.js': 'Popper'
+  }
 
-    const external = ['jquery', 'popper.js']
-    const globals = {
-      jquery: 'jQuery', // Ensure we use jQuery which is always available even in noConflict mode
-      'popper.js': 'Popper'
-    }
+  // Do not bundle Util in plugins
+  if (plugin !== 'Util') {
+    external.push(bsPlugins.Util)
+    globals[bsPlugins.Util] = 'Util'
+  }
 
-    // Do not bundle Util in plugins
-    if (pluginKey !== 'Util') {
-      external.push(bsPlugins.Util)
-      globals[bsPlugins.Util] = 'Util'
-    }
+  // Do not bundle Tooltip in Popover
+  if (plugin === 'Popover') {
+    external.push(bsPlugins.Tooltip)
+    globals[bsPlugins.Tooltip] = 'Tooltip'
+  }
 
-    // Do not bundle Tooltip in Popover
-    if (pluginKey === 'Popover') {
-      external.push(bsPlugins.Tooltip)
-      globals[bsPlugins.Tooltip] = 'Tooltip'
-    }
+  const pluginFilename = `${plugin.toLowerCase()}.js`
 
-    rollup.rollup({
-      input: bsPlugins[pluginKey],
-      plugins,
-      external
-    }).then((bundle) => {
-      bundle.write({
-        format,
-        name: pluginKey,
-        sourcemap: true,
-        globals,
-        file: path.resolve(__dirname, `${rootPath}${pluginKey.toLowerCase()}.js`)
-      })
-        .then(() => console.log(`Building ${pluginKey} plugin... Done !`))
-        .catch((err) => console.error(`${pluginKey}: ${err}`))
+  rollup.rollup({
+    input: bsPlugins[plugin],
+    plugins,
+    external
+  }).then((bundle) => {
+    bundle.write({
+      banner: banner(pluginFilename),
+      format: 'umd',
+      name: plugin,
+      sourcemap: true,
+      globals,
+      file: path.resolve(__dirname, `${rootPath}${pluginFilename}`)
     })
+      .then(() => console.log(`Building ${plugin} plugin... Done!`))
+      .catch((err) => console.error(`${plugin}: ${err}`))
   })
+}
+
+Object.keys(bsPlugins).forEach((plugin) => build(plugin))
diff --git a/vendor/twbs/bootstrap/build/change-version.js b/vendor/twbs/bootstrap/build/change-version.js
index 7102dc083..f1b4f747a 100644
--- a/vendor/twbs/bootstrap/build/change-version.js
+++ b/vendor/twbs/bootstrap/build/change-version.js
@@ -2,8 +2,8 @@
 
 /*!
  * Script to update version number references in the project.
- * Copyright 2017-2018 The Bootstrap Authors
- * Copyright 2017-2018 Twitter, Inc.
+ * Copyright 2017-2019 The Bootstrap Authors
+ * Copyright 2017-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/vendor/twbs/bootstrap/build/gcp-key.json.enc b/vendor/twbs/bootstrap/build/gcp-key.json.enc
deleted file mode 100644
index 6e1856a2f..000000000
--- a/vendor/twbs/bootstrap/build/gcp-key.json.enc
+++ /dev/null
diff --git a/vendor/twbs/bootstrap/build/generate-sri.js b/vendor/twbs/bootstrap/build/generate-sri.js
index 10936e8a1..a93f3e538 100644
--- a/vendor/twbs/bootstrap/build/generate-sri.js
+++ b/vendor/twbs/bootstrap/build/generate-sri.js
@@ -5,18 +5,20 @@
  * Remember to use the same vendor files as the CDN ones,
  * otherwise the hashes won't match!
  *
- * Copyright 2017-2018 The Bootstrap Authors
- * Copyright 2017-2018 Twitter, Inc.
+ * Copyright 2017-2019 The Bootstrap Authors
+ * Copyright 2017-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
 'use strict'
 
+const crypto = require('crypto')
 const fs = require('fs')
 const path = require('path')
-const sriToolbox = require('sri-toolbox')
 const sh = require('shelljs')
 
+const pkg = require('../package.json')
+
 sh.config.fatal = true
 
 const configFile = path.join(__dirname, '../_config.yml')
@@ -34,11 +36,15 @@ const files = [
     configPropertyName: 'js_hash'
   },
   {
-    file: 'site/docs/4.1/assets/js/vendor/jquery-slim.min.js',
+    file: 'dist/js/bootstrap.bundle.min.js',
+    configPropertyName: 'js_bundle_hash'
+  },
+  {
+    file: `site/docs/${pkg.version_short}/assets/js/vendor/jquery-slim.min.js`,
     configPropertyName: 'jquery_hash'
   },
   {
-    file: 'site/docs/4.1/assets/js/vendor/popper.min.js',
+    file: 'node_modules/popper.js/dist/umd/popper.min.js',
     configPropertyName: 'popper_hash'
   }
 ]
@@ -49,9 +55,9 @@ files.forEach((file) => {
       throw err
     }
 
-    const integrity = sriToolbox.generate({
-      algorithms: ['sha384']
-    }, data)
+    const algo = 'sha384'
+    const hash = crypto.createHash(algo).update(data, 'utf8').digest('base64')
+    const integrity = `${algo}-${hash}`
 
     console.log(`${file.configPropertyName}: ${integrity}`)
 
diff --git a/vendor/twbs/bootstrap/build/lint-vars.js b/vendor/twbs/bootstrap/build/lint-vars.js
deleted file mode 100644
index 1b8d71cc6..000000000
--- a/vendor/twbs/bootstrap/build/lint-vars.js
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/usr/bin/env node
-
-/*!
- * Script to find unused Sass variables.
- * Copyright 2017-2018 The Bootstrap Authors
- * Copyright 2017-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-'use strict'
-
-const fs = require('fs')
-const path = require('path')
-const glob = require('glob')
-
-// Blame TC39... https://github.com/benjamingr/RegExp.escape/issues/37
-function regExpQuote(str) {
-  return str.replace(/[-\\^$*+?.()|[\]{}]/g, '\\$&')
-}
-
-let globalSuccess = true
-
-function findUnusedVars(dir) {
-  if (!(fs.existsSync(dir) && fs.statSync(dir).isDirectory())) {
-    console.log(`"${dir}": Not a valid directory!`)
-    process.exit(1)
-  }
-
-  console.log(`Finding unused variables in "${dir}"...`)
-
-  // A variable to handle success/failure message in this function
-  let unusedVarsFound = false
-
-  // Array of all Sass files' content
-  const sassFiles = glob.sync(path.join(dir, '**/*.scss'))
-  // String of all Sass files' content
-  let sassFilesString = ''
-
-  sassFiles.forEach((file) => {
-    sassFilesString += fs.readFileSync(file, 'utf8')
-  })
-
-  // Array of all Sass variables
-  const variables = sassFilesString.match(/(^\$[a-zA-Z0-9_-]+[^:])/gm)
-
-  console.log(`Found ${variables.length} total variables.`)
-
-  // Loop through each variable
-  variables.forEach((variable) => {
-    const re = new RegExp(regExpQuote(variable), 'g')
-    const count = (sassFilesString.match(re) || []).length
-
-    if (count === 1) {
-      console.log(`Variable "${variable}" is not being used.`)
-      unusedVarsFound = true
-      globalSuccess = false
-    }
-  })
-
-  if (unusedVarsFound === false) {
-    console.log(`No unused variables found in "${dir}".`)
-  }
-}
-
-function main(args) {
-  if (args.length < 1) {
-    console.log('Wrong arguments!')
-    console.log('Usage: lint-vars.js folder [, folder2...]')
-    process.exit(1)
-  }
-
-  args.forEach((arg) => {
-    findUnusedVars(arg)
-  })
-
-  if (globalSuccess === false) {
-    process.exit(1)
-  }
-}
-
-// The first and second args are: path/to/node script.js
-main(process.argv.slice(2))
diff --git a/vendor/twbs/bootstrap/build/rollup.config.js b/vendor/twbs/bootstrap/build/rollup.config.js
index 93370d31d..e81a07ef5 100644
--- a/vendor/twbs/bootstrap/build/rollup.config.js
+++ b/vendor/twbs/bootstrap/build/rollup.config.js
@@ -3,10 +3,9 @@
 const path    = require('path')
 const babel   = require('rollup-plugin-babel')
 const resolve = require('rollup-plugin-node-resolve')
+const banner  = require('./banner.js')
 
-const pkg     = require(path.resolve(__dirname, '../package.json'))
 const BUNDLE  = process.env.BUNDLE === 'true'
-const year    = new Date().getFullYear()
 
 let fileDest  = 'bootstrap.js'
 const external = ['jquery', 'popper.js']
@@ -38,11 +37,7 @@ if (BUNDLE) {
 module.exports = {
   input: path.resolve(__dirname, '../js/src/index.js'),
   output: {
-    banner: `/*!
-  * Bootstrap v${pkg.version} (${pkg.homepage})
-  * Copyright 2011-${year} ${pkg.author}
-  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
-  */`,
+    banner,
     file: path.resolve(__dirname, `../dist/js/${fileDest}`),
     format: 'umd',
     globals,
diff --git a/vendor/twbs/bootstrap/build/sauce_browsers.json b/vendor/twbs/bootstrap/build/sauce_browsers.json
deleted file mode 100644
index b112d9c5b..000000000
--- a/vendor/twbs/bootstrap/build/sauce_browsers.json
+++ /dev/null
@@ -1,65 +0,0 @@
-[
-  {
-    "browserName": "safari",
-    "platform": "OS X 10.11",
-    "version": "latest"
-  },
-  {
-    "browserName": "chrome",
-    "platform": "OS X 10.11",
-    "version": "latest"
-  },
-  {
-    "browserName": "firefox",
-    "platform": "OS X 10.11",
-    "version": "latest"
-  },
-  {
-    "browserName": "MicrosoftEdge",
-    "platform": "Windows 10",
-    "version": "latest"
-  },
-  {
-    "browserName": "internet explorer",
-    "version": "11",
-    "platform": "Windows 8.1"
-  },
-  {
-    "browserName": "internet explorer",
-    "version": "10",
-    "platform": "Windows 8"
-  },
-  {
-    "browserName": "chrome",
-    "platform": "Windows 10",
-    "version": "latest"
-  },
-  {
-    "browserName": "firefox",
-    "platform": "Windows 10",
-    "version": "latest"
-  },
-  {
-    "browserName": "iphone",
-    "deviceName": "iPhone Simulator",
-    "platformName": "OS X 10.11",
-    "version": "9.3"
-  },
-  {
-    "browserName": "chrome",
-    "platform": "Linux",
-    "version": "latest"
-  },
-  {
-    "browserName": "firefox",
-    "platform": "Linux",
-    "version": "latest"
-  },
-  {
-    "platform": "Linux",
-    "browserName": "android",
-    "deviceName": "Android Emulator",
-    "version": "latest",
-    "deviceType": "phone"
-  }
-]
diff --git a/vendor/twbs/bootstrap/build/saucelabs-unit-test.js b/vendor/twbs/bootstrap/build/saucelabs-unit-test.js
deleted file mode 100644
index b4d952536..000000000
--- a/vendor/twbs/bootstrap/build/saucelabs-unit-test.js
+++ /dev/null
@@ -1,116 +0,0 @@
-/*!
- * Script to run our Sauce Labs tests.
- * Copyright 2017-2018 The Bootstrap Authors
- * Copyright 2017-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-/*
-Docs: https://wiki.saucelabs.com/display/DOCS/Platform+Configurator
-Mac Opera is not currently supported by Sauce Labs
-Win Opera 15+ is not currently supported by Sauce Labs
-iOS Chrome is not currently supported by Sauce Labs
-*/
-
-'use strict'
-
-const path = require('path')
-const JSUnitSaucelabs = require('jsunitsaucelabs')
-
-const jsUnitSaucelabs = new JSUnitSaucelabs({
-  username: process.env.SAUCE_USERNAME,
-  password: process.env.SAUCE_ACCESS_KEY,
-  build: process.env.TRAVIS_JOB_ID
-})
-
-const testURL = 'http://localhost:3000/js/tests/index.html?hidepassed'
-const browsersFile = require(path.resolve(__dirname, './sauce_browsers.json'))
-const errorMessages = [
-  'Test exceeded maximum duration',
-  'Test exceeded maximum duration after 180 seconds'
-]
-let jobsDone = 0
-let jobsSucceeded = 0
-
-const waitingCallback = (error, body, id) => {
-  if (error) {
-    console.error(error)
-    process.exit(1)
-  }
-
-  if (typeof body !== 'undefined') {
-    if (!body.completed) {
-      setTimeout(() => {
-        jsUnitSaucelabs.getStatus(id, (error, body) => {
-          waitingCallback(error, body, id)
-        })
-      }, 2000)
-    } else {
-      const test = body['js tests'][0]
-      const platform = test.platform.join(', ')
-      let passed = false
-      let errorStr = false
-
-      if (test.result !== null) {
-        if (typeof test.result === 'string' && errorMessages.includes(test.result)) {
-          errorStr = test.result
-        } else {
-          passed = test.result.total === test.result.passed
-        }
-      }
-
-      console.log(`Tested ${testURL}`)
-      console.log(`Platform: ${platform}`)
-      console.log(`Passed: ${passed}`)
-      console.log(`URL: ${test.url}\n`)
-
-      if (errorStr) {
-        console.error(`${platform}: ${errorStr}`)
-      }
-
-      if (passed) {
-        jobsSucceeded++
-      }
-      jobsDone++
-
-      // Exit
-      if (jobsDone === browsersFile.length - 1) {
-        jsUnitSaucelabs.stop()
-        if (jobsDone > jobsSucceeded) {
-          const failedTests = jobsDone - jobsSucceeded
-          throw new Error(`${failedTests} test${failedTests > 1 ? 's' : ''} failed.`)
-        }
-
-        console.log('All tests passed')
-        process.exit(0)
-      }
-    }
-  }
-}
-
-jsUnitSaucelabs.on('tunnelCreated', () => {
-  browsersFile.forEach((tmpBrowser) => {
-    const browsersPlatform = typeof tmpBrowser.platform === 'undefined' ? tmpBrowser.platformName : tmpBrowser.platform
-    const browsersArray = [browsersPlatform, tmpBrowser.browserName, tmpBrowser.version]
-
-    jsUnitSaucelabs.start([browsersArray], testURL, 'qunit', (error, success) => {
-      if (typeof success !== 'undefined') {
-        const taskIds = success['js tests']
-
-        if (!taskIds || taskIds.length === 0) {
-          throw new Error('Error starting tests through Sauce Labs API')
-        }
-
-        taskIds.forEach((id) => {
-          jsUnitSaucelabs.getStatus(id, (error, body) => {
-            waitingCallback(error, body, id)
-          })
-        })
-      } else {
-        console.error(error)
-      }
-    })
-  })
-})
-
-jsUnitSaucelabs.initTunnel()
diff --git a/vendor/twbs/bootstrap/build/ship.sh b/vendor/twbs/bootstrap/build/ship.sh
index e3b256e91..289284383 100644
--- a/vendor/twbs/bootstrap/build/ship.sh
+++ b/vendor/twbs/bootstrap/build/ship.sh
@@ -34,29 +34,11 @@ printf "\n%sUpdating version number...%s" $magenta $end
 printf "\n%s=======================================================\n%s" $magenta $end
 npm run release-version "$current_version" "$1"
 
-# Compile latest CSS and JS
+# Build release
 printf "\n%s=======================================================%s" $magenta $end
-printf "\n%sCompile latest CSS and JS...%s" $magenta $end
+printf "\n%sBuilding release...%s" $magenta $end
 printf "\n%s=======================================================\n%s" $magenta $end
-npm run dist
-
-# Generate the SRI hashes
-printf "\n%s=======================================================%s" $magenta $end
-printf "\n%sGenerate the SRI hashes...%s" $magenta $end
-printf "\n%s=======================================================\n%s" $magenta $end
-npm run release-sri
-
-# Compress the dist files
-printf "\n%s=======================================================%s" $magenta $end
-printf "\n%sCompressing the dist files...%s" $magenta $end
-printf "\n%s=======================================================\n%s" $magenta $end
-npm run release-zip
-
-# Compile the docs
-printf "\n%s=======================================================%s" $magenta $end
-printf "\n%sCompile hosted documentation...%s" $magenta $end
-printf "\n%s=======================================================\n%s" $magenta $end
-npm run docs-github
+npm run release
 
 # Copy the contents of the built docs site over to `bs-docs` repo
 printf "\n%s=======================================================%s" $magenta $end
diff --git a/vendor/twbs/bootstrap/build/svgo.yml b/vendor/twbs/bootstrap/build/svgo.yml
new file mode 100644
index 000000000..047e6947f
--- /dev/null
+++ b/vendor/twbs/bootstrap/build/svgo.yml
@@ -0,0 +1,57 @@
+# Usage:
+# install svgo globally: `npm i -g svgo`
+# svgo --config=build/svgo.yml --input=foo.svg
+
+# https://github.com/svg/svgo/blob/master/docs/how-it-works/en.md
+# replace default config
+
+multipass: true
+#full: true
+
+# https://github.com/svg/svgo/blob/master/lib/svgo/js2svg.js#L6 for more config options
+
+js2svg:
+  pretty: true
+  indent: 2
+
+plugins:
+  # remove this with IE 11 is no longer supported
+  - addAttributesToSVGElement:
+      attributes:
+        - focusable: false
+  - cleanupAttrs: true
+  - cleanupEnableBackground: true
+  - cleanupIDs: true
+  - cleanupListOfValues: true
+  - cleanupNumericValues: true
+  - collapseGroups: true
+  - convertColors: true
+  - convertPathData: true
+  - convertShapeToPath: true
+  - convertStyleToAttrs: true
+  - convertTransform: true
+  - inlineStyles: true
+  - mergePaths: true
+  - minifyStyles: true
+  - moveElemsAttrsToGroup: true
+  - moveGroupAttrsToElems: true
+  - removeComments: true
+  - removeDesc: true
+  - removeDoctype: true
+  - removeEditorsNSData: true
+  - removeEmptyAttrs: true
+  - removeEmptyContainers: true
+  - removeEmptyText: true
+  - removeHiddenElems: true
+  - removeMetadata: true
+  - removeNonInheritableGroupAttrs: true
+  - removeTitle: false
+  - removeUnknownsAndDefaults:
+      keepRoleAttr: true
+  - removeUnusedNS: true
+  - removeUselessDefs: true
+  - removeUselessStrokeAndFill: true
+  - removeViewBox: false
+  - removeXMLNS: false
+  - removeXMLProcInst: true
+  - sortAttrs: true
diff --git a/vendor/twbs/bootstrap/build/vnu-jar.js b/vendor/twbs/bootstrap/build/vnu-jar.js
index 111e03409..7d549cb01 100644
--- a/vendor/twbs/bootstrap/build/vnu-jar.js
+++ b/vendor/twbs/bootstrap/build/vnu-jar.js
@@ -2,8 +2,8 @@
 
 /*!
  * Script to run vnu-jar if Java is available.
- * Copyright 2017-2018 The Bootstrap Authors
- * Copyright 2017-2018 Twitter, Inc.
+ * Copyright 2017-2019 The Bootstrap Authors
+ * Copyright 2017-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
@@ -27,9 +27,6 @@ childProcess.exec('java -version', (error, stdout, stderr) => {
     // Firefox's non-standard autocomplete behavior - see https://bugzilla.mozilla.org/show_bug.cgi?id=654072
     'Attribute “autocomplete” is only allowed when the input type is.*',
     'Attribute “autocomplete” not allowed on element “button” at this point.',
-    // We use holder.js with `data-src` and no `src` to avoid 404 errors;
-    // we could work around this, but I'm not sure it's worth it.
-    'Element “img” is missing required attribute “src”.',
     // Markup used in Components → Forms → Layout → Form grid → Horizontal form is currently invalid,
     // but used this way due to lack of support for flexbox layout on <fieldset> element in most browsers
     'Element “legend” not allowed as child of element “div” in this context.*',
diff --git a/vendor/twbs/bootstrap/build/workbox.config.json b/vendor/twbs/bootstrap/build/workbox.config.json
deleted file mode 100644
index a649431ed..000000000
--- a/vendor/twbs/bootstrap/build/workbox.config.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "globDirectory": "./",
-  "globPatterns": [
-    "_gh_pages/**/*.{html,css,js,json,png,svg}"
-  ],
-  "swSrc": "./site/sw.js",
-  "swDest": "./_gh_pages/sw.js"
-}
diff --git a/vendor/twbs/bootstrap/build/workbox.js b/vendor/twbs/bootstrap/build/workbox.js
deleted file mode 100644
index 3a7ba450a..000000000
--- a/vendor/twbs/bootstrap/build/workbox.js
+++ /dev/null
@@ -1,58 +0,0 @@
-/*!
- * Script to generate our docs service worker.
- * Copyright 2017-2018 The Bootstrap Authors
- * Copyright 2017-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-'use strict'
-
-const fs = require('fs')
-const path = require('path')
-const swBuild = require('workbox-build')
-const config = require('./workbox.config.json')
-
-const buildPrefix = '_gh_pages/'
-
-const workboxSWSrcPath = require.resolve('workbox-sw')
-const wbFileName = path.basename(workboxSWSrcPath)
-const workboxSWDestPath = `${buildPrefix}docs/4.1/assets/js/vendor/${wbFileName}`
-const workboxSWSrcMapPath = `${workboxSWSrcPath}.map`
-const workboxSWDestMapPath = `${workboxSWDestPath}.map`
-
-fs.createReadStream(workboxSWSrcPath).pipe(fs.createWriteStream(workboxSWDestPath))
-fs.createReadStream(workboxSWSrcMapPath).pipe(fs.createWriteStream(workboxSWDestMapPath))
-
-const updateUrl = (manifestEntries) => {
-  const manifest = manifestEntries.map((entry) => {
-    if (entry.url.startsWith(buildPrefix)) {
-      const regex = new RegExp(buildPrefix, 'g')
-      entry.url = entry.url.replace(regex, '')
-    }
-    return entry
-  })
-  return {
-    manifest,
-    warnings: []
-  }
-}
-
-config.manifestTransforms = [updateUrl]
-
-swBuild.injectManifest(config).then(({
-  count,
-  size
-}) => {
-  const wbSwRegex = /{fileName}/g
-  fs.readFile(config.swDest, 'utf8', (err, data) => {
-    if (err) {
-      throw err
-    }
-    const swFileContents = data.replace(wbSwRegex, wbFileName)
-    fs.writeFile(config.swDest, swFileContents, () => {
-      console.log(`Pre-cache Manifest generated. Pre-cached ${count} files, totalling ${size} bytes.`)
-    })
-  })
-}).catch((error) => {
-  console.error(`Something went wrong: ${error}`)
-})