Merge remote branch 'upstream/master'

1 files changed, 340 insertions, 178 deletions

diff --git a/library/bootstrap/js/bootstrap.js b/library/bootstrap/js/bootstrap.js
index 53da1c77c..8dff365fb 100644
--- a/library/bootstrap/js/bootstrap.js
+++ b/library/bootstrap/js/bootstrap.js
@@ -1,13 +1,22 @@
 /*!
- * Bootstrap v3.2.0 (http://getbootstrap.com)
+ * Bootstrap v3.3.0 (http://getbootstrap.com)
  * Copyright 2011-2014 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
-if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript requires jQuery') }
+if (typeof jQuery === 'undefined') {
+  throw new Error('Bootstrap\'s JavaScript requires jQuery')
+}
+
++function ($) {
+  var version = $.fn.jquery.split(' ')[0].split('.')
+  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1)) {
+    throw new Error('Bootstrap\'s JavaScript requires jQuery version 1.9.1 or higher')
+  }
+}(jQuery);
 
 /* ========================================================================
- * Bootstrap: transition.js v3.2.0
+ * Bootstrap: transition.js v3.3.0
  * http://getbootstrap.com/javascript/#transitions
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -67,7 +76,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: alert.js v3.2.0
+ * Bootstrap: alert.js v3.3.0
  * http://getbootstrap.com/javascript/#alerts
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -86,7 +95,9 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     $(el).on('click', dismiss, this.close)
   }
 
-  Alert.VERSION = '3.2.0'
+  Alert.VERSION = '3.3.0'
+
+  Alert.TRANSITION_DURATION = 150
 
   Alert.prototype.close = function (e) {
     var $this    = $(this)
@@ -102,7 +113,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     if (e) e.preventDefault()
 
     if (!$parent.length) {
-      $parent = $this.hasClass('alert') ? $this : $this.parent()
+      $parent = $this.closest('.alert')
     }
 
     $parent.trigger(e = $.Event('close.bs.alert'))
@@ -119,7 +130,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     $.support.transition && $parent.hasClass('fade') ?
       $parent
         .one('bsTransitionEnd', removeElement)
-        .emulateTransitionEnd(150) :
+        .emulateTransitionEnd(Alert.TRANSITION_DURATION) :
       removeElement()
   }
 
@@ -160,7 +171,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: button.js v3.2.0
+ * Bootstrap: button.js v3.3.0
  * http://getbootstrap.com/javascript/#buttons
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -180,7 +191,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.isLoading = false
   }
 
-  Button.VERSION  = '3.2.0'
+  Button.VERSION  = '3.3.0'
 
   Button.DEFAULTS = {
     loadingText: 'loading...'
@@ -196,10 +207,10 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     if (data.resetText == null) $el.data('resetText', $el[val]())
 
-    $el[val](data[state] == null ? this.options[state] : data[state])
-
     // push to event loop to allow forms to submit
     setTimeout($.proxy(function () {
+      $el[val](data[state] == null ? this.options[state] : data[state])
+
       if (state == 'loadingText') {
         this.isLoading = true
         $el.addClass(d).attr(d, d)
@@ -221,6 +232,8 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
         else $parent.find('.active').removeClass('active')
       }
       if (changed) $input.prop('checked', !this.$element.hasClass('active')).trigger('change')
+    } else {
+      this.$element.attr('aria-pressed', !this.$element.hasClass('active'))
     }
 
     if (changed) this.$element.toggleClass('active')
@@ -261,17 +274,21 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   // BUTTON DATA-API
   // ===============
 
-  $(document).on('click.bs.button.data-api', '[data-toggle^="button"]', function (e) {
-    var $btn = $(e.target)
-    if (!$btn.hasClass('btn')) $btn = $btn.closest('.btn')
-    Plugin.call($btn, 'toggle')
-    e.preventDefault()
-  })
+  $(document)
+    .on('click.bs.button.data-api', '[data-toggle^="button"]', function (e) {
+      var $btn = $(e.target)
+      if (!$btn.hasClass('btn')) $btn = $btn.closest('.btn')
+      Plugin.call($btn, 'toggle')
+      e.preventDefault()
+    })
+    .on('focus.bs.button.data-api blur.bs.button.data-api', '[data-toggle^="button"]', function (e) {
+      $(e.target).closest('.btn').toggleClass('focus', e.type == 'focus')
+    })
 
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: carousel.js v3.2.0
+ * Bootstrap: carousel.js v3.3.0
  * http://getbootstrap.com/javascript/#carousel
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -286,7 +303,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   // =========================
 
   var Carousel = function (element, options) {
-    this.$element    = $(element).on('keydown.bs.carousel', $.proxy(this.keydown, this))
+    this.$element    = $(element)
     this.$indicators = this.$element.find('.carousel-indicators')
     this.options     = options
     this.paused      =
@@ -295,17 +312,22 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.$active     =
     this.$items      = null
 
-    this.options.pause == 'hover' && this.$element
+    this.options.keyboard && this.$element.on('keydown.bs.carousel', $.proxy(this.keydown, this))
+
+    this.options.pause == 'hover' && !('ontouchstart' in document.documentElement) && this.$element
       .on('mouseenter.bs.carousel', $.proxy(this.pause, this))
       .on('mouseleave.bs.carousel', $.proxy(this.cycle, this))
   }
 
-  Carousel.VERSION  = '3.2.0'
+  Carousel.VERSION  = '3.3.0'
+
+  Carousel.TRANSITION_DURATION = 600
 
   Carousel.DEFAULTS = {
     interval: 5000,
     pause: 'hover',
-    wrap: true
+    wrap: true,
+    keyboard: true
   }
 
   Carousel.prototype.keydown = function (e) {
@@ -335,6 +357,13 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     return this.$items.index(item || this.$active)
   }
 
+  Carousel.prototype.getItemForDirection = function (direction, active) {
+    var delta = direction == 'prev' ? -1 : 1
+    var activeIndex = this.getItemIndex(active)
+    var itemIndex = (activeIndex + delta) % this.$items.length
+    return this.$items.eq(itemIndex)
+  }
+
   Carousel.prototype.to = function (pos) {
     var that        = this
     var activeIndex = this.getItemIndex(this.$active = this.$element.find('.item.active'))
@@ -344,7 +373,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     if (this.sliding)       return this.$element.one('slid.bs.carousel', function () { that.to(pos) }) // yes, "slid"
     if (activeIndex == pos) return this.pause().cycle()
 
-    return this.slide(pos > activeIndex ? 'next' : 'prev', $(this.$items[pos]))
+    return this.slide(pos > activeIndex ? 'next' : 'prev', this.$items.eq(pos))
   }
 
   Carousel.prototype.pause = function (e) {
@@ -372,7 +401,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
   Carousel.prototype.slide = function (type, next) {
     var $active   = this.$element.find('.item.active')
-    var $next     = next || $active[type]()
+    var $next     = next || this.getItemForDirection(type, $active)
     var isCycling = this.interval
     var direction = type == 'next' ? 'left' : 'right'
     var fallback  = type == 'next' ? 'first' : 'last'
@@ -418,7 +447,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
             that.$element.trigger(slidEvent)
           }, 0)
         })
-        .emulateTransitionEnd($active.css('transition-duration').slice(0, -1) * 1000)
+        .emulateTransitionEnd(Carousel.TRANSITION_DURATION)
     } else {
       $active.removeClass('active')
       $next.addClass('active')
@@ -467,7 +496,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   // CAROUSEL DATA-API
   // =================
 
-  $(document).on('click.bs.carousel.data-api', '[data-slide], [data-slide-to]', function (e) {
+  var clickHandler = function (e) {
     var href
     var $this   = $(this)
     var $target = $($this.attr('data-target') || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) // strip for ie7
@@ -483,7 +512,11 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     }
 
     e.preventDefault()
-  })
+  }
+
+  $(document)
+    .on('click.bs.carousel.data-api', '[data-slide]', clickHandler)
+    .on('click.bs.carousel.data-api', '[data-slide-to]', clickHandler)
 
   $(window).on('load', function () {
     $('[data-ride="carousel"]').each(function () {
@@ -495,7 +528,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: collapse.js v3.2.0
+ * Bootstrap: collapse.js v3.3.0
  * http://getbootstrap.com/javascript/#collapse
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -512,16 +545,25 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   var Collapse = function (element, options) {
     this.$element      = $(element)
     this.options       = $.extend({}, Collapse.DEFAULTS, options)
+    this.$trigger      = $(this.options.trigger).filter('[href="#' + element.id + '"], [data-target="#' + element.id + '"]')
     this.transitioning = null
 
-    if (this.options.parent) this.$parent = $(this.options.parent)
+    if (this.options.parent) {
+      this.$parent = this.getParent()
+    } else {
+      this.addAriaAndCollapsedClass(this.$element, this.$trigger)
+    }
+
     if (this.options.toggle) this.toggle()
   }
 
-  Collapse.VERSION  = '3.2.0'
+  Collapse.VERSION  = '3.3.0'
+
+  Collapse.TRANSITION_DURATION = 350
 
   Collapse.DEFAULTS = {
-    toggle: true
+    toggle: true,
+    trigger: '[data-toggle="collapse"]'
   }
 
   Collapse.prototype.dimension = function () {
@@ -532,17 +574,21 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   Collapse.prototype.show = function () {
     if (this.transitioning || this.$element.hasClass('in')) return
 
+    var activesData
+    var actives = this.$parent && this.$parent.find('> .panel').children('.in, .collapsing')
+
+    if (actives && actives.length) {
+      activesData = actives.data('bs.collapse')
+      if (activesData && activesData.transitioning) return
+    }
+
     var startEvent = $.Event('show.bs.collapse')
     this.$element.trigger(startEvent)
     if (startEvent.isDefaultPrevented()) return
 
-    var actives = this.$parent && this.$parent.find('> .panel > .in')
-
     if (actives && actives.length) {
-      var hasData = actives.data('bs.collapse')
-      if (hasData && hasData.transitioning) return
       Plugin.call(actives, 'hide')
-      hasData || actives.data('bs.collapse', null)
+      activesData || actives.data('bs.collapse', null)
     }
 
     var dimension = this.dimension()
@@ -550,6 +596,11 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.$element
       .removeClass('collapse')
       .addClass('collapsing')[dimension](0)
+      .attr('aria-expanded', true)
+
+    this.$trigger
+      .removeClass('collapsed')
+      .attr('aria-expanded', true)
 
     this.transitioning = 1
 
@@ -568,7 +619,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     this.$element
       .one('bsTransitionEnd', $.proxy(complete, this))
-      .emulateTransitionEnd(350)[dimension](this.$element[0][scrollSize])
+      .emulateTransitionEnd(Collapse.TRANSITION_DURATION)[dimension](this.$element[0][scrollSize])
   }
 
   Collapse.prototype.hide = function () {
@@ -584,17 +635,21 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     this.$element
       .addClass('collapsing')
-      .removeClass('collapse')
-      .removeClass('in')
+      .removeClass('collapse in')
+      .attr('aria-expanded', false)
+
+    this.$trigger
+      .addClass('collapsed')
+      .attr('aria-expanded', false)
 
     this.transitioning = 1
 
     var complete = function () {
       this.transitioning = 0
       this.$element
-        .trigger('hidden.bs.collapse')
         .removeClass('collapsing')
         .addClass('collapse')
+        .trigger('hidden.bs.collapse')
     }
 
     if (!$.support.transition) return complete.call(this)
@@ -602,13 +657,40 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.$element
       [dimension](0)
       .one('bsTransitionEnd', $.proxy(complete, this))
-      .emulateTransitionEnd(350)
+      .emulateTransitionEnd(Collapse.TRANSITION_DURATION)
   }
 
   Collapse.prototype.toggle = function () {
     this[this.$element.hasClass('in') ? 'hide' : 'show']()
   }
 
+  Collapse.prototype.getParent = function () {
+    return $(this.options.parent)
+      .find('[data-toggle="collapse"][data-parent="' + this.options.parent + '"]')
+      .each($.proxy(function (i, element) {
+        var $element = $(element)
+        this.addAriaAndCollapsedClass(getTargetFromTrigger($element), $element)
+      }, this))
+      .end()
+  }
+
+  Collapse.prototype.addAriaAndCollapsedClass = function ($element, $trigger) {
+    var isOpen = $element.hasClass('in')
+
+    $element.attr('aria-expanded', isOpen)
+    $trigger
+      .toggleClass('collapsed', !isOpen)
+      .attr('aria-expanded', isOpen)
+  }
+
+  function getTargetFromTrigger($trigger) {
+    var href
+    var target = $trigger.attr('data-target')
+      || (href = $trigger.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') // strip for ie7
+
+    return $(target)
+  }
+
 
   // COLLAPSE PLUGIN DEFINITION
   // ==========================
@@ -619,7 +701,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
       var data    = $this.data('bs.collapse')
       var options = $.extend({}, Collapse.DEFAULTS, $this.data(), typeof option == 'object' && option)
 
-      if (!data && options.toggle && option == 'show') option = !option
+      if (!data && options.toggle && option == 'show') options.toggle = false
       if (!data) $this.data('bs.collapse', (data = new Collapse(this, options)))
       if (typeof option == 'string') data[option]()
     })
@@ -644,21 +726,13 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   // =================
 
   $(document).on('click.bs.collapse.data-api', '[data-toggle="collapse"]', function (e) {
-    var href
     var $this   = $(this)
-    var target  = $this.attr('data-target')
-        || e.preventDefault()
-        || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') // strip for ie7
-    var $target = $(target)
-    var data    = $target.data('bs.collapse')
-    var option  = data ? 'toggle' : $this.data()
-    var parent  = $this.attr('data-parent')
-    var $parent = parent && $(parent)
 
-    if (!data || !data.transitioning) {
-      if ($parent) $parent.find('[data-toggle="collapse"][data-parent="' + parent + '"]').not($this).addClass('collapsed')
-      $this[$target.hasClass('in') ? 'addClass' : 'removeClass']('collapsed')
-    }
+    if (!$this.attr('data-target')) e.preventDefault()
+
+    var $target = getTargetFromTrigger($this)
+    var data    = $target.data('bs.collapse')
+    var option  = data ? 'toggle' : $.extend({}, $this.data(), { trigger: this })
 
     Plugin.call($target, option)
   })
@@ -666,7 +740,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: dropdown.js v3.2.0
+ * Bootstrap: dropdown.js v3.3.0
  * http://getbootstrap.com/javascript/#dropdowns
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -686,7 +760,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     $(element).on('click.bs.dropdown', this.toggle)
   }
 
-  Dropdown.VERSION = '3.2.0'
+  Dropdown.VERSION = '3.3.0'
 
   Dropdown.prototype.toggle = function (e) {
     var $this = $(this)
@@ -709,7 +783,9 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
       if (e.isDefaultPrevented()) return
 
-      $this.trigger('focus')
+      $this
+        .trigger('focus')
+        .attr('aria-expanded', 'true')
 
       $parent
         .toggleClass('open')
@@ -720,7 +796,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   }
 
   Dropdown.prototype.keydown = function (e) {
-    if (!/(38|40|27)/.test(e.keyCode)) return
+    if (!/(38|40|27|32)/.test(e.which)) return
 
     var $this = $(this)
 
@@ -732,7 +808,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     var $parent  = getParent($this)
     var isActive = $parent.hasClass('open')
 
-    if (!isActive || (isActive && e.keyCode == 27)) {
+    if ((!isActive && e.which != 27) || (isActive && e.which == 27)) {
       if (e.which == 27) $parent.find(toggle).trigger('focus')
       return $this.trigger('click')
     }
@@ -742,10 +818,10 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     if (!$items.length) return
 
-    var index = $items.index($items.filter(':focus'))
+    var index = $items.index(e.target)
 
-    if (e.keyCode == 38 && index > 0)                 index--                        // up
-    if (e.keyCode == 40 && index < $items.length - 1) index++                        // down
+    if (e.which == 38 && index > 0)                 index--                        // up
+    if (e.which == 40 && index < $items.length - 1) index++                        // down
     if (!~index)                                      index = 0
 
     $items.eq(index).trigger('focus')
@@ -755,11 +831,17 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     if (e && e.which === 3) return
     $(backdrop).remove()
     $(toggle).each(function () {
-      var $parent = getParent($(this))
+      var $this         = $(this)
+      var $parent       = getParent($this)
       var relatedTarget = { relatedTarget: this }
+
       if (!$parent.hasClass('open')) return
+
       $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))
+
       if (e.isDefaultPrevented()) return
+
+      $this.attr('aria-expanded', 'false')
       $parent.removeClass('open').trigger('hidden.bs.dropdown', relatedTarget)
     })
   }
@@ -813,12 +895,14 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     .on('click.bs.dropdown.data-api', clearMenus)
     .on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
     .on('click.bs.dropdown.data-api', toggle, Dropdown.prototype.toggle)
-    .on('keydown.bs.dropdown.data-api', toggle + ', [role="menu"], [role="listbox"]', Dropdown.prototype.keydown)
+    .on('keydown.bs.dropdown.data-api', toggle, Dropdown.prototype.keydown)
+    .on('keydown.bs.dropdown.data-api', '[role="menu"]', Dropdown.prototype.keydown)
+    .on('keydown.bs.dropdown.data-api', '[role="listbox"]', Dropdown.prototype.keydown)
 
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: modal.js v3.2.0
+ * Bootstrap: modal.js v3.3.0
  * http://getbootstrap.com/javascript/#modals
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -849,7 +933,10 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     }
   }
 
-  Modal.VERSION  = '3.2.0'
+  Modal.VERSION  = '3.3.0'
+
+  Modal.TRANSITION_DURATION = 300
+  Modal.BACKDROP_TRANSITION_DURATION = 150
 
   Modal.DEFAULTS = {
     backdrop: true,
@@ -907,7 +994,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
           .one('bsTransitionEnd', function () {
             that.$element.trigger('focus').trigger(e)
           })
-          .emulateTransitionEnd(300) :
+          .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
         that.$element.trigger('focus').trigger(e)
     })
   }
@@ -923,9 +1010,6 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     this.isShown = false
 
-    this.$body.removeClass('modal-open')
-
-    this.resetScrollbar()
     this.escape()
 
     $(document).off('focusin.bs.modal')
@@ -938,7 +1022,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     $.support.transition && this.$element.hasClass('fade') ?
       this.$element
         .one('bsTransitionEnd', $.proxy(this.hideModal, this))
-        .emulateTransitionEnd(300) :
+        .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
       this.hideModal()
   }
 
@@ -954,11 +1038,11 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
   Modal.prototype.escape = function () {
     if (this.isShown && this.options.keyboard) {
-      this.$element.on('keyup.dismiss.bs.modal', $.proxy(function (e) {
+      this.$element.on('keydown.dismiss.bs.modal', $.proxy(function (e) {
         e.which == 27 && this.hide()
       }, this))
     } else if (!this.isShown) {
-      this.$element.off('keyup.dismiss.bs.modal')
+      this.$element.off('keydown.dismiss.bs.modal')
     }
   }
 
@@ -966,6 +1050,8 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     var that = this
     this.$element.hide()
     this.backdrop(function () {
+      that.$body.removeClass('modal-open')
+      that.resetScrollbar()
       that.$element.trigger('hidden.bs.modal')
     })
   }
@@ -983,14 +1069,13 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
       var doAnimate = $.support.transition && animate
 
       this.$backdrop = $('<div class="modal-backdrop ' + animate + '" />')
-        .appendTo(this.$body)
-
-      this.$element.on('click.dismiss.bs.modal', $.proxy(function (e) {
-        if (e.target !== e.currentTarget) return
-        this.options.backdrop == 'static'
-          ? this.$element[0].focus.call(this.$element[0])
-          : this.hide.call(this)
-      }, this))
+        .prependTo(this.$element)
+        .on('click.dismiss.bs.modal', $.proxy(function (e) {
+          if (e.target !== e.currentTarget) return
+          this.options.backdrop == 'static'
+            ? this.$element[0].focus.call(this.$element[0])
+            : this.hide.call(this)
+        }, this))
 
       if (doAnimate) this.$backdrop[0].offsetWidth // force reflow
 
@@ -1001,7 +1086,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
       doAnimate ?
         this.$backdrop
           .one('bsTransitionEnd', callback)
-          .emulateTransitionEnd(150) :
+          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
         callback()
 
     } else if (!this.isShown && this.$backdrop) {
@@ -1014,7 +1099,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
       $.support.transition && this.$element.hasClass('fade') ?
         this.$backdrop
           .one('bsTransitionEnd', callbackRemove)
-          .emulateTransitionEnd(150) :
+          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
         callbackRemove()
 
     } else if (callback) {
@@ -1023,8 +1108,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   }
 
   Modal.prototype.checkScrollbar = function () {
-    if (document.body.clientWidth >= window.innerWidth) return
-    this.scrollbarWidth = this.scrollbarWidth || this.measureScrollbar()
+    this.scrollbarWidth = this.measureScrollbar()
   }
 
   Modal.prototype.setScrollbar = function () {
@@ -1037,6 +1121,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   }
 
   Modal.prototype.measureScrollbar = function () { // thx walsh
+    if (document.body.clientWidth >= window.innerWidth) return 0
     var scrollDiv = document.createElement('div')
     scrollDiv.className = 'modal-scrollbar-measure'
     this.$body.append(scrollDiv)
@@ -1099,7 +1184,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: tooltip.js v3.2.0
+ * Bootstrap: tooltip.js v3.3.0
  * http://getbootstrap.com/javascript/#tooltip
  * Inspired by the original jQuery.tipsy by Jason Frame
  * ========================================================================
@@ -1125,7 +1210,9 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.init('tooltip', element, options)
   }
 
-  Tooltip.VERSION  = '3.2.0'
+  Tooltip.VERSION  = '3.3.0'
+
+  Tooltip.TRANSITION_DURATION = 150
 
   Tooltip.DEFAULTS = {
     animation: true,
@@ -1203,6 +1290,11 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     var self = obj instanceof this.constructor ?
       obj : $(obj.currentTarget).data('bs.' + this.type)
 
+    if (self && self.$tip && self.$tip.is(':visible')) {
+      self.hoverState = 'in'
+      return
+    }
+
     if (!self) {
       self = new this.constructor(obj.currentTarget, this.getDelegateOptions())
       $(obj.currentTarget).data('bs.' + this.type, self)
@@ -1245,7 +1337,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     if (this.hasContent() && this.enabled) {
       this.$element.trigger(e)
 
-      var inDom = $.contains(document.documentElement, this.$element[0])
+      var inDom = $.contains(this.$element[0].ownerDocument.documentElement, this.$element[0])
       if (e.isDefaultPrevented() || !inDom) return
       var that = this
 
@@ -1281,13 +1373,13 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
       if (autoPlace) {
         var orgPlacement = placement
-        var $parent      = this.$element.parent()
-        var parentDim    = this.getPosition($parent)
+        var $container   = this.options.container ? $(this.options.container) : this.$element.parent()
+        var containerDim = this.getPosition($container)
 
-        placement = placement == 'bottom' && pos.top   + pos.height       + actualHeight - parentDim.scroll > parentDim.height ? 'top'    :
-                    placement == 'top'    && pos.top   - parentDim.scroll - actualHeight < 0                                   ? 'bottom' :
-                    placement == 'right'  && pos.right + actualWidth      > parentDim.width                                    ? 'left'   :
-                    placement == 'left'   && pos.left  - actualWidth      < parentDim.left                                     ? 'right'  :
+        placement = placement == 'bottom' && pos.bottom + actualHeight > containerDim.bottom ? 'top'    :
+                    placement == 'top'    && pos.top    - actualHeight < containerDim.top    ? 'bottom' :
+                    placement == 'right'  && pos.right  + actualWidth  > containerDim.width  ? 'left'   :
+                    placement == 'left'   && pos.left   - actualWidth  < containerDim.left   ? 'right'  :
                     placement
 
         $tip
@@ -1300,14 +1392,17 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
       this.applyPlacement(calculatedOffset, placement)
 
       var complete = function () {
+        var prevHoverState = that.hoverState
         that.$element.trigger('shown.bs.' + that.type)
         that.hoverState = null
+
+        if (prevHoverState == 'out') that.leave(that)
       }
 
       $.support.transition && this.$tip.hasClass('fade') ?
         $tip
           .one('bsTransitionEnd', complete)
-          .emulateTransitionEnd(150) :
+          .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
         complete()
     }
   }
@@ -1354,16 +1449,18 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     if (delta.left) offset.left += delta.left
     else offset.top += delta.top
 
-    var arrowDelta          = delta.left ? delta.left * 2 - width + actualWidth : delta.top * 2 - height + actualHeight
-    var arrowPosition       = delta.left ? 'left'        : 'top'
-    var arrowOffsetPosition = delta.left ? 'offsetWidth' : 'offsetHeight'
+    var isVertical          = /top|bottom/.test(placement)
+    var arrowDelta          = isVertical ? delta.left * 2 - width + actualWidth : delta.top * 2 - height + actualHeight
+    var arrowOffsetPosition = isVertical ? 'offsetWidth' : 'offsetHeight'
 
     $tip.offset(offset)
-    this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], arrowPosition)
+    this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], isVertical)
   }
 
-  Tooltip.prototype.replaceArrow = function (delta, dimension, position) {
-    this.arrow().css(position, delta ? (50 * (1 - delta / dimension) + '%') : '')
+  Tooltip.prototype.replaceArrow = function (delta, dimension, isHorizontal) {
+    this.arrow()
+      .css(isHorizontal ? 'left' : 'top', 50 * (1 - delta / dimension) + '%')
+      .css(isHorizontal ? 'top' : 'left', '')
   }
 
   Tooltip.prototype.setContent = function () {
@@ -1374,16 +1471,17 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     $tip.removeClass('fade in top bottom left right')
   }
 
-  Tooltip.prototype.hide = function () {
+  Tooltip.prototype.hide = function (callback) {
     var that = this
     var $tip = this.tip()
     var e    = $.Event('hide.bs.' + this.type)
 
-    this.$element.removeAttr('aria-describedby')
-
     function complete() {
       if (that.hoverState != 'in') $tip.detach()
-      that.$element.trigger('hidden.bs.' + that.type)
+      that.$element
+        .removeAttr('aria-describedby')
+        .trigger('hidden.bs.' + that.type)
+      callback && callback()
     }
 
     this.$element.trigger(e)
@@ -1395,7 +1493,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     $.support.transition && this.$tip.hasClass('fade') ?
       $tip
         .one('bsTransitionEnd', complete)
-        .emulateTransitionEnd(150) :
+        .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
       complete()
 
     this.hoverState = null
@@ -1416,13 +1514,20 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
   Tooltip.prototype.getPosition = function ($element) {
     $element   = $element || this.$element
+
     var el     = $element[0]
     var isBody = el.tagName == 'BODY'
-    return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : null, {
-      scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop(),
-      width:  isBody ? $(window).width()  : $element.outerWidth(),
-      height: isBody ? $(window).height() : $element.outerHeight()
-    }, isBody ? { top: 0, left: 0 } : $element.offset())
+
+    var elRect    = el.getBoundingClientRect()
+    if (elRect.width == null) {
+      // width and height are missing in IE8, so compute them manually; see https://github.com/twbs/bootstrap/issues/14093
+      elRect = $.extend({}, elRect, { width: elRect.right - elRect.left, height: elRect.bottom - elRect.top })
+    }
+    var elOffset  = isBody ? { top: 0, left: 0 } : $element.offset()
+    var scroll    = { scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
+    var outerDims = isBody ? { width: $(window).width(), height: $(window).height() } : null
+
+    return $.extend({}, elRect, scroll, outerDims, elOffset)
   }
 
   Tooltip.prototype.getCalculatedOffset = function (placement, pos, actualWidth, actualHeight) {
@@ -1486,14 +1591,6 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     return (this.$arrow = this.$arrow || this.tip().find('.tooltip-arrow'))
   }
 
-  Tooltip.prototype.validate = function () {
-    if (!this.$element[0].parentNode) {
-      this.hide()
-      this.$element = null
-      this.options  = null
-    }
-  }
-
   Tooltip.prototype.enable = function () {
     this.enabled = true
   }
@@ -1520,8 +1617,11 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   }
 
   Tooltip.prototype.destroy = function () {
+    var that = this
     clearTimeout(this.timeout)
-    this.hide().$element.off('.' + this.type).removeData('bs.' + this.type)
+    this.hide(function () {
+      that.$element.off('.' + that.type).removeData('bs.' + that.type)
+    })
   }
 
 
@@ -1530,12 +1630,18 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
   function Plugin(option) {
     return this.each(function () {
-      var $this   = $(this)
-      var data    = $this.data('bs.tooltip')
-      var options = typeof option == 'object' && option
+      var $this    = $(this)
+      var data     = $this.data('bs.tooltip')
+      var options  = typeof option == 'object' && option
+      var selector = options && options.selector
 
       if (!data && option == 'destroy') return
-      if (!data) $this.data('bs.tooltip', (data = new Tooltip(this, options)))
+      if (selector) {
+        if (!data) $this.data('bs.tooltip', (data = {}))
+        if (!data[selector]) data[selector] = new Tooltip(this, options)
+      } else {
+        if (!data) $this.data('bs.tooltip', (data = new Tooltip(this, options)))
+      }
       if (typeof option == 'string') data[option]()
     })
   }
@@ -1557,7 +1663,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: popover.js v3.2.0
+ * Bootstrap: popover.js v3.3.0
  * http://getbootstrap.com/javascript/#popovers
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -1577,7 +1683,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
   if (!$.fn.tooltip) throw new Error('Popover requires tooltip.js')
 
-  Popover.VERSION  = '3.2.0'
+  Popover.VERSION  = '3.3.0'
 
   Popover.DEFAULTS = $.extend({}, $.fn.tooltip.Constructor.DEFAULTS, {
     placement: 'right',
@@ -1604,7 +1710,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     var content = this.getContent()
 
     $tip.find('.popover-title')[this.options.html ? 'html' : 'text'](title)
-    $tip.find('.popover-content').empty()[ // we use append for html objects to maintain js events
+    $tip.find('.popover-content').children().detach().end()[ // we use append for html objects to maintain js events
       this.options.html ? (typeof content == 'string' ? 'html' : 'append') : 'text'
     ](content)
 
@@ -1644,12 +1750,18 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
   function Plugin(option) {
     return this.each(function () {
-      var $this   = $(this)
-      var data    = $this.data('bs.popover')
-      var options = typeof option == 'object' && option
+      var $this    = $(this)
+      var data     = $this.data('bs.popover')
+      var options  = typeof option == 'object' && option
+      var selector = options && options.selector
 
       if (!data && option == 'destroy') return
-      if (!data) $this.data('bs.popover', (data = new Popover(this, options)))
+      if (selector) {
+        if (!data) $this.data('bs.popover', (data = {}))
+        if (!data[selector]) data[selector] = new Popover(this, options)
+      } else {
+        if (!data) $this.data('bs.popover', (data = new Popover(this, options)))
+      }
       if (typeof option == 'string') data[option]()
     })
   }
@@ -1671,7 +1783,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: scrollspy.js v3.2.0
+ * Bootstrap: scrollspy.js v3.3.0
  * http://getbootstrap.com/javascript/#scrollspy
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -1702,7 +1814,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.process()
   }
 
-  ScrollSpy.VERSION  = '3.2.0'
+  ScrollSpy.VERSION  = '3.3.0'
 
   ScrollSpy.DEFAULTS = {
     offset: 10
@@ -1763,8 +1875,9 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
       return activeTarget != (i = targets[targets.length - 1]) && this.activate(i)
     }
 
-    if (activeTarget && scrollTop <= offsets[0]) {
-      return activeTarget != (i = targets[0]) && this.activate(i)
+    if (activeTarget && scrollTop < offsets[0]) {
+      this.activeTarget = null
+      return this.clear()
     }
 
     for (i = offsets.length; i--;) {
@@ -1778,9 +1891,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   ScrollSpy.prototype.activate = function (target) {
     this.activeTarget = target
 
-    $(this.selector)
-      .parentsUntil(this.options.target, '.active')
-      .removeClass('active')
+    this.clear()
 
     var selector = this.selector +
         '[data-target="' + target + '"],' +
@@ -1799,6 +1910,12 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     active.trigger('activate.bs.scrollspy')
   }
 
+  ScrollSpy.prototype.clear = function () {
+    $(this.selector)
+      .parentsUntil(this.options.target, '.active')
+      .removeClass('active')
+  }
+
 
   // SCROLLSPY PLUGIN DEFINITION
   // ===========================
@@ -1842,7 +1959,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: tab.js v3.2.0
+ * Bootstrap: tab.js v3.3.0
  * http://getbootstrap.com/javascript/#tabs
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -1860,7 +1977,9 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.element = $(element)
   }
 
-  Tab.VERSION = '3.2.0'
+  Tab.VERSION = '3.3.0'
+
+  Tab.TRANSITION_DURATION = 150
 
   Tab.prototype.show = function () {
     var $this    = this.element
@@ -1874,22 +1993,30 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     if ($this.parent('li').hasClass('active')) return
 
-    var previous = $ul.find('.active:last a')[0]
-    var e        = $.Event('show.bs.tab', {
-      relatedTarget: previous
+    var $previous = $ul.find('.active:last a')
+    var hideEvent = $.Event('hide.bs.tab', {
+      relatedTarget: $this[0]
+    })
+    var showEvent = $.Event('show.bs.tab', {
+      relatedTarget: $previous[0]
     })
 
-    $this.trigger(e)
+    $previous.trigger(hideEvent)
+    $this.trigger(showEvent)
 
-    if (e.isDefaultPrevented()) return
+    if (showEvent.isDefaultPrevented() || hideEvent.isDefaultPrevented()) return
 
     var $target = $(selector)
 
     this.activate($this.closest('li'), $ul)
     this.activate($target, $target.parent(), function () {
+      $previous.trigger({
+        type: 'hidden.bs.tab',
+        relatedTarget: $this[0]
+      })
       $this.trigger({
         type: 'shown.bs.tab',
-        relatedTarget: previous
+        relatedTarget: $previous[0]
       })
     })
   }
@@ -1898,15 +2025,21 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     var $active    = container.find('> .active')
     var transition = callback
       && $.support.transition
-      && $active.hasClass('fade')
+      && (($active.length && $active.hasClass('fade')) || !!container.find('> .fade').length)
 
     function next() {
       $active
         .removeClass('active')
         .find('> .dropdown-menu > .active')
-        .removeClass('active')
+          .removeClass('active')
+        .end()
+        .find('[data-toggle="tab"]')
+          .attr('aria-expanded', false)
 
-      element.addClass('active')
+      element
+        .addClass('active')
+        .find('[data-toggle="tab"]')
+          .attr('aria-expanded', true)
 
       if (transition) {
         element[0].offsetWidth // reflow for transition
@@ -1916,16 +2049,21 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
       }
 
       if (element.parent('.dropdown-menu')) {
-        element.closest('li.dropdown').addClass('active')
+        element
+          .closest('li.dropdown')
+            .addClass('active')
+          .end()
+          .find('[data-toggle="tab"]')
+            .attr('aria-expanded', true)
       }
 
       callback && callback()
     }
 
-    transition ?
+    $active.length && transition ?
       $active
         .one('bsTransitionEnd', next)
-        .emulateTransitionEnd(150) :
+        .emulateTransitionEnd(Tab.TRANSITION_DURATION) :
       next()
 
     $active.removeClass('in')
@@ -1963,15 +2101,19 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   // TAB DATA-API
   // ============
 
-  $(document).on('click.bs.tab.data-api', '[data-toggle="tab"], [data-toggle="pill"]', function (e) {
+  var clickHandler = function (e) {
     e.preventDefault()
     Plugin.call($(this), 'show')
-  })
+  }
+
+  $(document)
+    .on('click.bs.tab.data-api', '[data-toggle="tab"]', clickHandler)
+    .on('click.bs.tab.data-api', '[data-toggle="pill"]', clickHandler)
 
 }(jQuery);
 
 /* ========================================================================
- * Bootstrap: affix.js v3.2.0
+ * Bootstrap: affix.js v3.3.0
  * http://getbootstrap.com/javascript/#affix
  * ========================================================================
  * Copyright 2011-2014 Twitter, Inc.
@@ -2000,7 +2142,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     this.checkPosition()
   }
 
-  Affix.VERSION  = '3.2.0'
+  Affix.VERSION  = '3.3.0'
 
   Affix.RESET    = 'affix affix-top affix-bottom'
 
@@ -2009,6 +2151,28 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     target: window
   }
 
+  Affix.prototype.getState = function (scrollHeight, height, offsetTop, offsetBottom) {
+    var scrollTop    = this.$target.scrollTop()
+    var position     = this.$element.offset()
+    var targetHeight = this.$target.height()
+
+    if (offsetTop != null && this.affixed == 'top') return scrollTop < offsetTop ? 'top' : false
+
+    if (this.affixed == 'bottom') {
+      if (offsetTop != null) return (scrollTop + this.unpin <= position.top) ? false : 'bottom'
+      return (scrollTop + targetHeight <= scrollHeight - offsetBottom) ? false : 'bottom'
+    }
+
+    var initializing   = this.affixed == null
+    var colliderTop    = initializing ? scrollTop : position.top
+    var colliderHeight = initializing ? targetHeight : height
+
+    if (offsetTop != null && colliderTop <= offsetTop) return 'top'
+    if (offsetBottom != null && (colliderTop + colliderHeight >= scrollHeight - offsetBottom)) return 'bottom'
+
+    return false
+  }
+
   Affix.prototype.getPinnedOffset = function () {
     if (this.pinnedOffset) return this.pinnedOffset
     this.$element.removeClass(Affix.RESET).addClass('affix')
@@ -2024,42 +2188,40 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
   Affix.prototype.checkPosition = function () {
     if (!this.$element.is(':visible')) return
 
-    var scrollHeight = $(document).height()
-    var scrollTop    = this.$target.scrollTop()
-    var position     = this.$element.offset()
+    var height       = this.$element.height()
     var offset       = this.options.offset
     var offsetTop    = offset.top
     var offsetBottom = offset.bottom
+    var scrollHeight = $('body').height()
 
     if (typeof offset != 'object')         offsetBottom = offsetTop = offset
     if (typeof offsetTop == 'function')    offsetTop    = offset.top(this.$element)
     if (typeof offsetBottom == 'function') offsetBottom = offset.bottom(this.$element)
 
-    var affix = this.unpin   != null && (scrollTop + this.unpin <= position.top) ? false :
-                offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ? 'bottom' :
-                offsetTop    != null && (scrollTop <= offsetTop) ? 'top' : false
+    var affix = this.getState(scrollHeight, height, offsetTop, offsetBottom)
 
-    if (this.affixed === affix) return
-    if (this.unpin != null) this.$element.css('top', '')
+    if (this.affixed != affix) {
+      if (this.unpin != null) this.$element.css('top', '')
 
-    var affixType = 'affix' + (affix ? '-' + affix : '')
-    var e         = $.Event(affixType + '.bs.affix')
+      var affixType = 'affix' + (affix ? '-' + affix : '')
+      var e         = $.Event(affixType + '.bs.affix')
 
-    this.$element.trigger(e)
+      this.$element.trigger(e)
 
-    if (e.isDefaultPrevented()) return
+      if (e.isDefaultPrevented()) return
 
-    this.affixed = affix
-    this.unpin = affix == 'bottom' ? this.getPinnedOffset() : null
+      this.affixed = affix
+      this.unpin = affix == 'bottom' ? this.getPinnedOffset() : null
 
-    this.$element
-      .removeClass(Affix.RESET)
-      .addClass(affixType)
-      .trigger($.Event(affixType.replace('affix', 'affixed')))
+      this.$element
+        .removeClass(Affix.RESET)
+        .addClass(affixType)
+        .trigger(affixType.replace('affix', 'affixed') + '.bs.affix')
+    }
 
     if (affix == 'bottom') {
       this.$element.offset({
-        top: scrollHeight - this.$element.height() - offsetBottom
+        top: scrollHeight - height - offsetBottom
       })
     }
   }
@@ -2104,8 +2266,8 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
       data.offset = data.offset || {}
 
-      if (data.offsetBottom) data.offset.bottom = data.offsetBottom
-      if (data.offsetTop)    data.offset.top    = data.offsetTop
+      if (data.offsetBottom != null) data.offset.bottom = data.offsetBottom
+      if (data.offsetTop    != null) data.offset.top    = data.offsetTop
 
       Plugin.call($spy, data)
     })