rake update[v4.0.0-alpha.6]

11 files changed, 279 insertions, 174 deletions

diff --git a/assets/javascripts/bootstrap/alert.js b/assets/javascripts/bootstrap/alert.js
index 159afee..b332252 100644
--- a/assets/javascripts/bootstrap/alert.js
+++ b/assets/javascripts/bootstrap/alert.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): alert.js
+ * Bootstrap (v4.0.0-alpha.6): alert.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Alert = function ($) {
    */
 
   var NAME = 'alert';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.alert';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -38,7 +38,7 @@ var Alert = function ($) {
   var ClassName = {
     ALERT: 'alert',
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   /**
@@ -101,14 +101,18 @@ var Alert = function ($) {
     };
 
     Alert.prototype._removeElement = function _removeElement(element) {
-      $(element).removeClass(ClassName.IN);
+      var _this = this;
+
+      $(element).removeClass(ClassName.SHOW);
 
       if (!Util.supportsTransitionEnd() || !$(element).hasClass(ClassName.FADE)) {
         this._destroyElement(element);
         return;
       }
 
-      $(element).one(Util.TRANSITION_END, $.proxy(this._destroyElement, this, element)).emulateTransitionEnd(TRANSITION_DURATION);
+      $(element).one(Util.TRANSITION_END, function (event) {
+        return _this._destroyElement(element, event);
+      }).emulateTransitionEnd(TRANSITION_DURATION);
     };
 
     Alert.prototype._destroyElement = function _destroyElement(element) {
diff --git a/assets/javascripts/bootstrap/button.js b/assets/javascripts/bootstrap/button.js
index 932c68f..03f787e 100644
--- a/assets/javascripts/bootstrap/button.js
+++ b/assets/javascripts/bootstrap/button.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): button.js
+ * Bootstrap (v4.0.0-alpha.6): button.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Button = function ($) {
    */
 
   var NAME = 'button';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.button';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -82,15 +82,15 @@ var Button = function ($) {
 
           if (triggerChangeEvent) {
             input.checked = !$(this._element).hasClass(ClassName.ACTIVE);
-            $(this._element).trigger('change');
+            $(input).trigger('change');
           }
 
           input.focus();
         }
-      } else {
-        this._element.setAttribute('aria-pressed', !$(this._element).hasClass(ClassName.ACTIVE));
       }
 
+      this._element.setAttribute('aria-pressed', !$(this._element).hasClass(ClassName.ACTIVE));
+
       if (triggerChangeEvent) {
         $(this._element).toggleClass(ClassName.ACTIVE);
       }
diff --git a/assets/javascripts/bootstrap/carousel.js b/assets/javascripts/bootstrap/carousel.js
index cfe5ce3..c834f67 100644
--- a/assets/javascripts/bootstrap/carousel.js
+++ b/assets/javascripts/bootstrap/carousel.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): carousel.js
+ * Bootstrap (v4.0.0-alpha.6): carousel.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var Carousel = function ($) {
    */
 
   var NAME = 'carousel';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.carousel';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -47,7 +47,9 @@ var Carousel = function ($) {
 
   var Direction = {
     NEXT: 'next',
-    PREVIOUS: 'prev'
+    PREV: 'prev',
+    LEFT: 'left',
+    RIGHT: 'right'
   };
 
   var Event = {
@@ -64,8 +66,10 @@ var Carousel = function ($) {
     CAROUSEL: 'carousel',
     ACTIVE: 'active',
     SLIDE: 'slide',
-    RIGHT: 'right',
-    LEFT: 'left',
+    RIGHT: 'carousel-item-right',
+    LEFT: 'carousel-item-left',
+    NEXT: 'carousel-item-next',
+    PREV: 'carousel-item-prev',
     ITEM: 'carousel-item'
   };
 
@@ -73,7 +77,7 @@ var Carousel = function ($) {
     ACTIVE: '.active',
     ACTIVE_ITEM: '.active.carousel-item',
     ITEM: '.carousel-item',
-    NEXT_PREV: '.next, .prev',
+    NEXT_PREV: '.carousel-item-next, .carousel-item-prev',
     INDICATORS: '.carousel-indicators',
     DATA_SLIDE: '[data-slide], [data-slide-to]',
     DATA_RIDE: '[data-ride="carousel"]'
@@ -108,9 +112,10 @@ var Carousel = function ($) {
     // public
 
     Carousel.prototype.next = function next() {
-      if (!this._isSliding) {
-        this._slide(Direction.NEXT);
+      if (this._isSliding) {
+        throw new Error('Carousel is sliding');
       }
+      this._slide(Direction.NEXT);
     };
 
     Carousel.prototype.nextWhenVisible = function nextWhenVisible() {
@@ -121,9 +126,10 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype.prev = function prev() {
-      if (!this._isSliding) {
-        this._slide(Direction.PREVIOUS);
+      if (this._isSliding) {
+        throw new Error('Carousel is sliding');
       }
+      this._slide(Direction.PREVIOUS);
     };
 
     Carousel.prototype.pause = function pause(event) {
@@ -151,7 +157,7 @@ var Carousel = function ($) {
       }
 
       if (this._config.interval && !this._isPaused) {
-        this._interval = setInterval($.proxy(document.visibilityState ? this.nextWhenVisible : this.next, this), this._config.interval);
+        this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
       }
     };
 
@@ -207,27 +213,35 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype._addEventListeners = function _addEventListeners() {
+      var _this2 = this;
+
       if (this._config.keyboard) {
-        $(this._element).on(Event.KEYDOWN, $.proxy(this._keydown, this));
+        $(this._element).on(Event.KEYDOWN, function (event) {
+          return _this2._keydown(event);
+        });
       }
 
       if (this._config.pause === 'hover' && !('ontouchstart' in document.documentElement)) {
-        $(this._element).on(Event.MOUSEENTER, $.proxy(this.pause, this)).on(Event.MOUSELEAVE, $.proxy(this.cycle, this));
+        $(this._element).on(Event.MOUSEENTER, function (event) {
+          return _this2.pause(event);
+        }).on(Event.MOUSELEAVE, function (event) {
+          return _this2.cycle(event);
+        });
       }
     };
 
     Carousel.prototype._keydown = function _keydown(event) {
-      event.preventDefault();
-
       if (/input|textarea/i.test(event.target.tagName)) {
         return;
       }
 
       switch (event.which) {
         case ARROW_LEFT_KEYCODE:
+          event.preventDefault();
           this.prev();
           break;
         case ARROW_RIGHT_KEYCODE:
+          event.preventDefault();
           this.next();
           break;
         default:
@@ -257,10 +271,10 @@ var Carousel = function ($) {
       return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];
     };
 
-    Carousel.prototype._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, directionalClassname) {
+    Carousel.prototype._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {
       var slideEvent = $.Event(Event.SLIDE, {
         relatedTarget: relatedTarget,
-        direction: directionalClassname
+        direction: eventDirectionName
       });
 
       $(this._element).trigger(slideEvent);
@@ -281,21 +295,33 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype._slide = function _slide(direction, element) {
-      var _this2 = this;
+      var _this3 = this;
 
       var activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0];
       var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);
 
       var isCycling = Boolean(this._interval);
 
-      var directionalClassName = direction === Direction.NEXT ? ClassName.LEFT : ClassName.RIGHT;
+      var directionalClassName = void 0;
+      var orderClassName = void 0;
+      var eventDirectionName = void 0;
+
+      if (direction === Direction.NEXT) {
+        directionalClassName = ClassName.LEFT;
+        orderClassName = ClassName.NEXT;
+        eventDirectionName = Direction.LEFT;
+      } else {
+        directionalClassName = ClassName.RIGHT;
+        orderClassName = ClassName.PREV;
+        eventDirectionName = Direction.RIGHT;
+      }
 
       if (nextElement && $(nextElement).hasClass(ClassName.ACTIVE)) {
         this._isSliding = false;
         return;
       }
 
-      var slideEvent = this._triggerSlideEvent(nextElement, directionalClassName);
+      var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);
       if (slideEvent.isDefaultPrevented()) {
         return;
       }
@@ -315,12 +341,12 @@ var Carousel = function ($) {
 
       var slidEvent = $.Event(Event.SLID, {
         relatedTarget: nextElement,
-        direction: directionalClassName
+        direction: eventDirectionName
       });
 
       if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.SLIDE)) {
 
-        $(nextElement).addClass(direction);
+        $(nextElement).addClass(orderClassName);
 
         Util.reflow(nextElement);
 
@@ -328,16 +354,14 @@ var Carousel = function ($) {
         $(nextElement).addClass(directionalClassName);
 
         $(activeElement).one(Util.TRANSITION_END, function () {
-          $(nextElement).removeClass(directionalClassName).removeClass(direction);
-
-          $(nextElement).addClass(ClassName.ACTIVE);
+          $(nextElement).removeClass(directionalClassName + ' ' + orderClassName).addClass(ClassName.ACTIVE);
 
-          $(activeElement).removeClass(ClassName.ACTIVE).removeClass(direction).removeClass(directionalClassName);
+          $(activeElement).removeClass(ClassName.ACTIVE + ' ' + orderClassName + ' ' + directionalClassName);
 
-          _this2._isSliding = false;
+          _this3._isSliding = false;
 
           setTimeout(function () {
-            return $(_this2._element).trigger(slidEvent);
+            return $(_this3._element).trigger(slidEvent);
           }, 0);
         }).emulateTransitionEnd(TRANSITION_DURATION);
       } else {
diff --git a/assets/javascripts/bootstrap/collapse.js b/assets/javascripts/bootstrap/collapse.js
index cd3caa7..2969a60 100644
--- a/assets/javascripts/bootstrap/collapse.js
+++ b/assets/javascripts/bootstrap/collapse.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): collapse.js
+ * Bootstrap (v4.0.0-alpha.6): collapse.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var Collapse = function ($) {
    */
 
   var NAME = 'collapse';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.collapse';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -46,7 +46,7 @@ var Collapse = function ($) {
   };
 
   var ClassName = {
-    IN: 'in',
+    SHOW: 'show',
     COLLAPSE: 'collapse',
     COLLAPSING: 'collapsing',
     COLLAPSED: 'collapsed'
@@ -58,7 +58,7 @@ var Collapse = function ($) {
   };
 
   var Selector = {
-    ACTIVES: '.card > .in, .card > .collapsing',
+    ACTIVES: '.card > .show, .card > .collapsing',
     DATA_TOGGLE: '[data-toggle="collapse"]'
   };
 
@@ -93,7 +93,7 @@ var Collapse = function ($) {
     // public
 
     Collapse.prototype.toggle = function toggle() {
-      if ($(this._element).hasClass(ClassName.IN)) {
+      if ($(this._element).hasClass(ClassName.SHOW)) {
         this.hide();
       } else {
         this.show();
@@ -103,7 +103,11 @@ var Collapse = function ($) {
     Collapse.prototype.show = function show() {
       var _this = this;
 
-      if (this._isTransitioning || $(this._element).hasClass(ClassName.IN)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning');
+      }
+
+      if ($(this._element).hasClass(ClassName.SHOW)) {
         return;
       }
 
@@ -111,7 +115,7 @@ var Collapse = function ($) {
       var activesData = void 0;
 
       if (this._parent) {
-        actives = $.makeArray($(Selector.ACTIVES));
+        actives = $.makeArray($(this._parent).find(Selector.ACTIVES));
         if (!actives.length) {
           actives = null;
         }
@@ -151,7 +155,7 @@ var Collapse = function ($) {
       this.setTransitioning(true);
 
       var complete = function complete() {
-        $(_this._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).addClass(ClassName.IN);
+        $(_this._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).addClass(ClassName.SHOW);
 
         _this._element.style[dimension] = '';
 
@@ -176,7 +180,11 @@ var Collapse = function ($) {
     Collapse.prototype.hide = function hide() {
       var _this2 = this;
 
-      if (this._isTransitioning || !$(this._element).hasClass(ClassName.IN)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning');
+      }
+
+      if (!$(this._element).hasClass(ClassName.SHOW)) {
         return;
       }
 
@@ -193,7 +201,7 @@ var Collapse = function ($) {
 
       Util.reflow(this._element);
 
-      $(this._element).addClass(ClassName.COLLAPSING).removeClass(ClassName.COLLAPSE).removeClass(ClassName.IN);
+      $(this._element).addClass(ClassName.COLLAPSING).removeClass(ClassName.COLLAPSE).removeClass(ClassName.SHOW);
 
       this._element.setAttribute('aria-expanded', false);
 
@@ -261,7 +269,7 @@ var Collapse = function ($) {
 
     Collapse.prototype._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
       if (element) {
-        var isOpen = $(element).hasClass(ClassName.IN);
+        var isOpen = $(element).hasClass(ClassName.SHOW);
         element.setAttribute('aria-expanded', isOpen);
 
         if (triggerArray.length) {
diff --git a/assets/javascripts/bootstrap/dropdown.js b/assets/javascripts/bootstrap/dropdown.js
index 0f53f14..87fa677 100644
--- a/assets/javascripts/bootstrap/dropdown.js
+++ b/assets/javascripts/bootstrap/dropdown.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): dropdown.js
+ * Bootstrap (v4.0.0-alpha.6): dropdown.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Dropdown = function ($) {
    */
 
   var NAME = 'dropdown';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.dropdown';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -35,13 +35,14 @@ var Dropdown = function ($) {
     SHOWN: 'shown' + EVENT_KEY,
     CLICK: 'click' + EVENT_KEY,
     CLICK_DATA_API: 'click' + EVENT_KEY + DATA_API_KEY,
+    FOCUSIN_DATA_API: 'focusin' + EVENT_KEY + DATA_API_KEY,
     KEYDOWN_DATA_API: 'keydown' + EVENT_KEY + DATA_API_KEY
   };
 
   var ClassName = {
     BACKDROP: 'dropdown-backdrop',
     DISABLED: 'disabled',
-    OPEN: 'open'
+    SHOW: 'show'
   };
 
   var Selector = {
@@ -79,7 +80,7 @@ var Dropdown = function ($) {
       }
 
       var parent = Dropdown._getParentFromElement(this);
-      var isActive = $(parent).hasClass(ClassName.OPEN);
+      var isActive = $(parent).hasClass(ClassName.SHOW);
 
       Dropdown._clearMenus();
 
@@ -96,7 +97,9 @@ var Dropdown = function ($) {
         $(dropdown).on('click', Dropdown._clearMenus);
       }
 
-      var relatedTarget = { relatedTarget: this };
+      var relatedTarget = {
+        relatedTarget: this
+      };
       var showEvent = $.Event(Event.SHOW, relatedTarget);
 
       $(parent).trigger(showEvent);
@@ -106,9 +109,9 @@ var Dropdown = function ($) {
       }
 
       this.focus();
-      this.setAttribute('aria-expanded', 'true');
+      this.setAttribute('aria-expanded', true);
 
-      $(parent).toggleClass(ClassName.OPEN);
+      $(parent).toggleClass(ClassName.SHOW);
       $(parent).trigger($.Event(Event.SHOWN, relatedTarget));
 
       return false;
@@ -133,7 +136,8 @@ var Dropdown = function ($) {
         var data = $(this).data(DATA_KEY);
 
         if (!data) {
-          $(this).data(DATA_KEY, data = new Dropdown(this));
+          data = new Dropdown(this);
+          $(this).data(DATA_KEY, data);
         }
 
         if (typeof config === 'string') {
@@ -159,13 +163,15 @@ var Dropdown = function ($) {
 
       for (var i = 0; i < toggles.length; i++) {
         var parent = Dropdown._getParentFromElement(toggles[i]);
-        var relatedTarget = { relatedTarget: toggles[i] };
+        var relatedTarget = {
+          relatedTarget: toggles[i]
+        };
 
-        if (!$(parent).hasClass(ClassName.OPEN)) {
+        if (!$(parent).hasClass(ClassName.SHOW)) {
           continue;
         }
 
-        if (event && event.type === 'click' && /input|textarea/i.test(event.target.tagName) && $.contains(parent, event.target)) {
+        if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'focusin') && $.contains(parent, event.target)) {
           continue;
         }
 
@@ -177,7 +183,7 @@ var Dropdown = function ($) {
 
         toggles[i].setAttribute('aria-expanded', 'false');
 
-        $(parent).removeClass(ClassName.OPEN).trigger($.Event(Event.HIDDEN, relatedTarget));
+        $(parent).removeClass(ClassName.SHOW).trigger($.Event(Event.HIDDEN, relatedTarget));
       }
     };
 
@@ -205,7 +211,7 @@ var Dropdown = function ($) {
       }
 
       var parent = Dropdown._getParentFromElement(this);
-      var isActive = $(parent).hasClass(ClassName.OPEN);
+      var isActive = $(parent).hasClass(ClassName.SHOW);
 
       if (!isActive && event.which !== ESCAPE_KEYCODE || isActive && event.which === ESCAPE_KEYCODE) {
 
@@ -218,11 +224,7 @@ var Dropdown = function ($) {
         return;
       }
 
-      var items = $.makeArray($(Selector.VISIBLE_ITEMS));
-
-      items = items.filter(function (item) {
-        return item.offsetWidth || item.offsetHeight;
-      });
+      var items = $(parent).find(Selector.VISIBLE_ITEMS).get();
 
       if (!items.length) {
         return;
@@ -263,7 +265,7 @@ var Dropdown = function ($) {
    * ------------------------------------------------------------------------
    */
 
-  $(document).on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.ROLE_MENU, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.ROLE_LISTBOX, Dropdown._dataApiKeydownHandler).on(Event.CLICK_DATA_API, Dropdown._clearMenus).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, Dropdown.prototype.toggle).on(Event.CLICK_DATA_API, Selector.FORM_CHILD, function (e) {
+  $(document).on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.ROLE_MENU, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.ROLE_LISTBOX, Dropdown._dataApiKeydownHandler).on(Event.CLICK_DATA_API + ' ' + Event.FOCUSIN_DATA_API, Dropdown._clearMenus).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, Dropdown.prototype.toggle).on(Event.CLICK_DATA_API, Selector.FORM_CHILD, function (e) {
     e.stopPropagation();
   });
 
diff --git a/assets/javascripts/bootstrap/modal.js b/assets/javascripts/bootstrap/modal.js
index f2e2f74..c6113e9 100644
--- a/assets/javascripts/bootstrap/modal.js
+++ b/assets/javascripts/bootstrap/modal.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): modal.js
+ * Bootstrap (v4.0.0-alpha.6): modal.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var Modal = function ($) {
    */
 
   var NAME = 'modal';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.modal';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -62,14 +62,14 @@ var Modal = function ($) {
     BACKDROP: 'modal-backdrop',
     OPEN: 'modal-open',
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
     DIALOG: '.modal-dialog',
     DATA_TOGGLE: '[data-toggle="modal"]',
     DATA_DISMISS: '[data-dismiss="modal"]',
-    FIXED_CONTENT: '.navbar-fixed-top, .navbar-fixed-bottom, .is-fixed'
+    FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top'
   };
 
   /**
@@ -89,6 +89,7 @@ var Modal = function ($) {
       this._isShown = false;
       this._isBodyOverflowing = false;
       this._ignoreBackdropClick = false;
+      this._isTransitioning = false;
       this._originalBodyPadding = 0;
       this._scrollbarWidth = 0;
     }
@@ -104,6 +105,13 @@ var Modal = function ($) {
     Modal.prototype.show = function show(relatedTarget) {
       var _this = this;
 
+      if (this._isTransitioning) {
+        throw new Error('Modal is transitioning');
+      }
+
+      if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
+        this._isTransitioning = true;
+      }
       var showEvent = $.Event(Event.SHOW, {
         relatedTarget: relatedTarget
       });
@@ -124,7 +132,9 @@ var Modal = function ($) {
       this._setEscapeEvent();
       this._setResizeEvent();
 
-      $(this._element).on(Event.CLICK_DISMISS, Selector.DATA_DISMISS, $.proxy(this.hide, this));
+      $(this._element).on(Event.CLICK_DISMISS, Selector.DATA_DISMISS, function (event) {
+        return _this.hide(event);
+      });
 
       $(this._dialog).on(Event.MOUSEDOWN_DISMISS, function () {
         $(_this._element).one(Event.MOUSEUP_DISMISS, function (event) {
@@ -134,16 +144,28 @@ var Modal = function ($) {
         });
       });
 
-      this._showBackdrop($.proxy(this._showElement, this, relatedTarget));
+      this._showBackdrop(function () {
+        return _this._showElement(relatedTarget);
+      });
     };
 
     Modal.prototype.hide = function hide(event) {
+      var _this2 = this;
+
       if (event) {
         event.preventDefault();
       }
 
-      var hideEvent = $.Event(Event.HIDE);
+      if (this._isTransitioning) {
+        throw new Error('Modal is transitioning');
+      }
+
+      var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);
+      if (transition) {
+        this._isTransitioning = true;
+      }
 
+      var hideEvent = $.Event(Event.HIDE);
       $(this._element).trigger(hideEvent);
 
       if (!this._isShown || hideEvent.isDefaultPrevented()) {
@@ -157,14 +179,15 @@ var Modal = function ($) {
 
       $(document).off(Event.FOCUSIN);
 
-      $(this._element).removeClass(ClassName.IN);
+      $(this._element).removeClass(ClassName.SHOW);
 
       $(this._element).off(Event.CLICK_DISMISS);
       $(this._dialog).off(Event.MOUSEDOWN_DISMISS);
 
-      if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
-
-        $(this._element).one(Util.TRANSITION_END, $.proxy(this._hideModal, this)).emulateTransitionEnd(TRANSITION_DURATION);
+      if (transition) {
+        $(this._element).one(Util.TRANSITION_END, function (event) {
+          return _this2._hideModal(event);
+        }).emulateTransitionEnd(TRANSITION_DURATION);
       } else {
         this._hideModal();
       }
@@ -173,10 +196,7 @@ var Modal = function ($) {
     Modal.prototype.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY);
 
-      $(window).off(EVENT_KEY);
-      $(document).off(EVENT_KEY);
-      $(this._element).off(EVENT_KEY);
-      $(this._backdrop).off(EVENT_KEY);
+      $(window, document, this._element, this._backdrop).off(EVENT_KEY);
 
       this._config = null;
       this._element = null;
@@ -198,7 +218,7 @@ var Modal = function ($) {
     };
 
     Modal.prototype._showElement = function _showElement(relatedTarget) {
-      var _this2 = this;
+      var _this3 = this;
 
       var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);
 
@@ -215,7 +235,7 @@ var Modal = function ($) {
         Util.reflow(this._element);
       }
 
-      $(this._element).addClass(ClassName.IN);
+      $(this._element).addClass(ClassName.SHOW);
 
       if (this._config.focus) {
         this._enforceFocus();
@@ -226,10 +246,11 @@ var Modal = function ($) {
       });
 
       var transitionComplete = function transitionComplete() {
-        if (_this2._config.focus) {
-          _this2._element.focus();
+        if (_this3._config.focus) {
+          _this3._element.focus();
         }
-        $(_this2._element).trigger(shownEvent);
+        _this3._isTransitioning = false;
+        $(_this3._element).trigger(shownEvent);
       };
 
       if (transition) {
@@ -240,23 +261,23 @@ var Modal = function ($) {
     };
 
     Modal.prototype._enforceFocus = function _enforceFocus() {
-      var _this3 = this;
+      var _this4 = this;
 
       $(document).off(Event.FOCUSIN) // guard against infinite focus loop
       .on(Event.FOCUSIN, function (event) {
-        if (document !== event.target && _this3._element !== event.target && !$(_this3._element).has(event.target).length) {
-          _this3._element.focus();
+        if (document !== event.target && _this4._element !== event.target && !$(_this4._element).has(event.target).length) {
+          _this4._element.focus();
         }
       });
     };
 
     Modal.prototype._setEscapeEvent = function _setEscapeEvent() {
-      var _this4 = this;
+      var _this5 = this;
 
       if (this._isShown && this._config.keyboard) {
         $(this._element).on(Event.KEYDOWN_DISMISS, function (event) {
           if (event.which === ESCAPE_KEYCODE) {
-            _this4.hide();
+            _this5.hide();
           }
         });
       } else if (!this._isShown) {
@@ -265,23 +286,28 @@ var Modal = function ($) {
     };
 
     Modal.prototype._setResizeEvent = function _setResizeEvent() {
+      var _this6 = this;
+
       if (this._isShown) {
-        $(window).on(Event.RESIZE, $.proxy(this._handleUpdate, this));
+        $(window).on(Event.RESIZE, function (event) {
+          return _this6._handleUpdate(event);
+        });
       } else {
         $(window).off(Event.RESIZE);
       }
     };
 
     Modal.prototype._hideModal = function _hideModal() {
-      var _this5 = this;
+      var _this7 = this;
 
       this._element.style.display = 'none';
       this._element.setAttribute('aria-hidden', 'true');
+      this._isTransitioning = false;
       this._showBackdrop(function () {
         $(document.body).removeClass(ClassName.OPEN);
-        _this5._resetAdjustments();
-        _this5._resetScrollbar();
-        $(_this5._element).trigger(Event.HIDDEN);
+        _this7._resetAdjustments();
+        _this7._resetScrollbar();
+        $(_this7._element).trigger(Event.HIDDEN);
       });
     };
 
@@ -293,7 +319,7 @@ var Modal = function ($) {
     };
 
     Modal.prototype._showBackdrop = function _showBackdrop(callback) {
-      var _this6 = this;
+      var _this8 = this;
 
       var animate = $(this._element).hasClass(ClassName.FADE) ? ClassName.FADE : '';
 
@@ -310,17 +336,17 @@ var Modal = function ($) {
         $(this._backdrop).appendTo(document.body);
 
         $(this._element).on(Event.CLICK_DISMISS, function (event) {
-          if (_this6._ignoreBackdropClick) {
-            _this6._ignoreBackdropClick = false;
+          if (_this8._ignoreBackdropClick) {
+            _this8._ignoreBackdropClick = false;
             return;
           }
           if (event.target !== event.currentTarget) {
             return;
           }
-          if (_this6._config.backdrop === 'static') {
-            _this6._element.focus();
+          if (_this8._config.backdrop === 'static') {
+            _this8._element.focus();
           } else {
-            _this6.hide();
+            _this8.hide();
           }
         });
 
@@ -328,7 +354,7 @@ var Modal = function ($) {
           Util.reflow(this._backdrop);
         }
 
-        $(this._backdrop).addClass(ClassName.IN);
+        $(this._backdrop).addClass(ClassName.SHOW);
 
         if (!callback) {
           return;
@@ -341,10 +367,10 @@ var Modal = function ($) {
 
         $(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
       } else if (!this._isShown && this._backdrop) {
-        $(this._backdrop).removeClass(ClassName.IN);
+        $(this._backdrop).removeClass(ClassName.SHOW);
 
         var callbackRemove = function callbackRemove() {
-          _this6._removeBackdrop();
+          _this8._removeBackdrop();
           if (callback) {
             callback();
           }
@@ -460,7 +486,7 @@ var Modal = function ($) {
    */
 
   $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    var _this7 = this;
+    var _this9 = this;
 
     var target = void 0;
     var selector = Util.getSelectorFromElement(this);
@@ -471,7 +497,7 @@ var Modal = function ($) {
 
     var config = $(target).data(DATA_KEY) ? 'toggle' : $.extend({}, $(target).data(), $(this).data());
 
-    if (this.tagName === 'A') {
+    if (this.tagName === 'A' || this.tagName === 'AREA') {
       event.preventDefault();
     }
 
@@ -482,8 +508,8 @@ var Modal = function ($) {
       }
 
       $target.one(Event.HIDDEN, function () {
-        if ($(_this7).is(':visible')) {
-          _this7.focus();
+        if ($(_this9).is(':visible')) {
+          _this9.focus();
         }
       });
     });
diff --git a/assets/javascripts/bootstrap/popover.js b/assets/javascripts/bootstrap/popover.js
index 84efc68..5ca8c0c 100644
--- a/assets/javascripts/bootstrap/popover.js
+++ b/assets/javascripts/bootstrap/popover.js
@@ -10,7 +10,7 @@ function _inherits(subClass, superClass) { if (typeof superClass !== "function"
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): popover.js
+ * Bootstrap (v4.0.0-alpha.6): popover.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -24,7 +24,7 @@ var Popover = function ($) {
    */
 
   var NAME = 'popover';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.popover';
   var EVENT_KEY = '.' + DATA_KEY;
   var JQUERY_NO_CONFLICT = $.fn[NAME];
@@ -42,7 +42,7 @@ var Popover = function ($) {
 
   var ClassName = {
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
@@ -95,7 +95,7 @@ var Popover = function ($) {
       this.setElementContent($tip.find(Selector.TITLE), this.getTitle());
       this.setElementContent($tip.find(Selector.CONTENT), this._getContent());
 
-      $tip.removeClass(ClassName.FADE).removeClass(ClassName.IN);
+      $tip.removeClass(ClassName.FADE + ' ' + ClassName.SHOW);
 
       this.cleanupTether();
     };
diff --git a/assets/javascripts/bootstrap/scrollspy.js b/assets/javascripts/bootstrap/scrollspy.js
index d5e4588..e2ee2e3 100644
--- a/assets/javascripts/bootstrap/scrollspy.js
+++ b/assets/javascripts/bootstrap/scrollspy.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): scrollspy.js
+ * Bootstrap (v4.0.0-alpha.6): scrollspy.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var ScrollSpy = function ($) {
    */
 
   var NAME = 'scrollspy';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.scrollspy';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -77,6 +77,8 @@ var ScrollSpy = function ($) {
 
   var ScrollSpy = function () {
     function ScrollSpy(element, config) {
+      var _this = this;
+
       _classCallCheck(this, ScrollSpy);
 
       this._element = element;
@@ -88,7 +90,9 @@ var ScrollSpy = function ($) {
       this._activeTarget = null;
       this._scrollHeight = 0;
 
-      $(this._scrollElement).on(Event.SCROLL, $.proxy(this._process, this));
+      $(this._scrollElement).on(Event.SCROLL, function (event) {
+        return _this._process(event);
+      });
 
       this.refresh();
       this._process();
@@ -99,7 +103,7 @@ var ScrollSpy = function ($) {
     // public
 
     ScrollSpy.prototype.refresh = function refresh() {
-      var _this = this;
+      var _this2 = this;
 
       var autoMethod = this._scrollElement !== this._scrollElement.window ? OffsetMethod.POSITION : OffsetMethod.OFFSET;
 
@@ -132,8 +136,8 @@ var ScrollSpy = function ($) {
       }).sort(function (a, b) {
         return a[0] - b[0];
       }).forEach(function (item) {
-        _this._offsets.push(item[0]);
-        _this._targets.push(item[1]);
+        _this2._offsets.push(item[0]);
+        _this2._targets.push(item[1]);
       });
     };
 
@@ -171,17 +175,21 @@ var ScrollSpy = function ($) {
     };
 
     ScrollSpy.prototype._getScrollTop = function _getScrollTop() {
-      return this._scrollElement === window ? this._scrollElement.scrollY : this._scrollElement.scrollTop;
+      return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
     };
 
     ScrollSpy.prototype._getScrollHeight = function _getScrollHeight() {
       return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
     };
 
+    ScrollSpy.prototype._getOffsetHeight = function _getOffsetHeight() {
+      return this._scrollElement === window ? window.innerHeight : this._scrollElement.offsetHeight;
+    };
+
     ScrollSpy.prototype._process = function _process() {
       var scrollTop = this._getScrollTop() + this._config.offset;
       var scrollHeight = this._getScrollHeight();
-      var maxScroll = this._config.offset + scrollHeight - this._scrollElement.offsetHeight;
+      var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
 
       if (this._scrollHeight !== scrollHeight) {
         this.refresh();
@@ -193,9 +201,10 @@ var ScrollSpy = function ($) {
         if (this._activeTarget !== target) {
           this._activate(target);
         }
+        return;
       }
 
-      if (this._activeTarget && scrollTop < this._offsets[0]) {
+      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
         this._activeTarget = null;
         this._clear();
         return;
@@ -228,7 +237,7 @@ var ScrollSpy = function ($) {
       } else {
         // todo (fat) this is kinda sus...
         // recursively add actives to tested nav-links
-        $link.parents(Selector.LI).find(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
+        $link.parents(Selector.LI).find('> ' + Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
       }
 
       $(this._scrollElement).trigger(Event.ACTIVATE, {
@@ -245,7 +254,7 @@ var ScrollSpy = function ($) {
     ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY);
-        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' && config || null;
+        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' && config;
 
         if (!data) {
           data = new ScrollSpy(this, _config);
diff --git a/assets/javascripts/bootstrap/tab.js b/assets/javascripts/bootstrap/tab.js
index a38f48b..ba1b9c1 100644
--- a/assets/javascripts/bootstrap/tab.js
+++ b/assets/javascripts/bootstrap/tab.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): tab.js
+ * Bootstrap (v4.0.0-alpha.6): tab.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Tab = function ($) {
    */
 
   var NAME = 'tab';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.tab';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -36,15 +36,16 @@ var Tab = function ($) {
   var ClassName = {
     DROPDOWN_MENU: 'dropdown-menu',
     ACTIVE: 'active',
+    DISABLED: 'disabled',
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
     A: 'a',
     LI: 'li',
     DROPDOWN: '.dropdown',
-    UL: 'ul:not(.dropdown-menu)',
+    LIST: 'ul:not(.dropdown-menu), ol:not(.dropdown-menu), nav:not(.dropdown-menu)',
     FADE_CHILD: '> .nav-item .fade, > .fade',
     ACTIVE: '.active',
     ACTIVE_CHILD: '> .nav-item > .active, > .active',
@@ -73,17 +74,17 @@ var Tab = function ($) {
     Tab.prototype.show = function show() {
       var _this = this;
 
-      if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $(this._element).hasClass(ClassName.ACTIVE)) {
+      if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $(this._element).hasClass(ClassName.ACTIVE) || $(this._element).hasClass(ClassName.DISABLED)) {
         return;
       }
 
       var target = void 0;
       var previous = void 0;
-      var ulElement = $(this._element).closest(Selector.UL)[0];
+      var listElement = $(this._element).closest(Selector.LIST)[0];
       var selector = Util.getSelectorFromElement(this._element);
 
-      if (ulElement) {
-        previous = $.makeArray($(ulElement).find(Selector.ACTIVE));
+      if (listElement) {
+        previous = $.makeArray($(listElement).find(Selector.ACTIVE));
         previous = previous[previous.length - 1];
       }
 
@@ -109,7 +110,7 @@ var Tab = function ($) {
         target = $(selector)[0];
       }
 
-      this._activate(this._element, ulElement);
+      this._activate(this._element, listElement);
 
       var complete = function complete() {
         var hiddenEvent = $.Event(Event.HIDDEN, {
@@ -139,10 +140,14 @@ var Tab = function ($) {
     // private
 
     Tab.prototype._activate = function _activate(element, container, callback) {
+      var _this2 = this;
+
       var active = $(container).find(Selector.ACTIVE_CHILD)[0];
       var isTransitioning = callback && Util.supportsTransitionEnd() && (active && $(active).hasClass(ClassName.FADE) || Boolean($(container).find(Selector.FADE_CHILD)[0]));
 
-      var complete = $.proxy(this._transitionComplete, this, element, active, isTransitioning, callback);
+      var complete = function complete() {
+        return _this2._transitionComplete(element, active, isTransitioning, callback);
+      };
 
       if (active && isTransitioning) {
         $(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
@@ -151,7 +156,7 @@ var Tab = function ($) {
       }
 
       if (active) {
-        $(active).removeClass(ClassName.IN);
+        $(active).removeClass(ClassName.SHOW);
       }
     };
 
@@ -159,7 +164,7 @@ var Tab = function ($) {
       if (active) {
         $(active).removeClass(ClassName.ACTIVE);
 
-        var dropdownChild = $(active).find(Selector.DROPDOWN_ACTIVE_CHILD)[0];
+        var dropdownChild = $(active.parentNode).find(Selector.DROPDOWN_ACTIVE_CHILD)[0];
 
         if (dropdownChild) {
           $(dropdownChild).removeClass(ClassName.ACTIVE);
@@ -173,7 +178,7 @@ var Tab = function ($) {
 
       if (isTransitioning) {
         Util.reflow(element);
-        $(element).addClass(ClassName.IN);
+        $(element).addClass(ClassName.SHOW);
       } else {
         $(element).removeClass(ClassName.FADE);
       }
@@ -201,7 +206,7 @@ var Tab = function ($) {
         var data = $this.data(DATA_KEY);
 
         if (!data) {
-          data = data = new Tab(this);
+          data = new Tab(this);
           $this.data(DATA_KEY, data);
         }
 
diff --git a/assets/javascripts/bootstrap/tooltip.js b/assets/javascripts/bootstrap/tooltip.js
index 2d3f6b4..d261eab 100644
--- a/assets/javascripts/bootstrap/tooltip.js
+++ b/assets/javascripts/bootstrap/tooltip.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): tooltip.js
+ * Bootstrap (v4.0.0-alpha.6): tooltip.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -17,7 +17,7 @@ var Tooltip = function ($) {
    * Check for Tether dependency
    * Tether - http://tether.io/
    */
-  if (window.Tether === undefined) {
+  if (typeof Tether === 'undefined') {
     throw new Error('Bootstrap tooltips require Tether (http://tether.io/)');
   }
 
@@ -28,7 +28,7 @@ var Tooltip = function ($) {
    */
 
   var NAME = 'tooltip';
-  var VERSION = '4.0.0-alpha.5';
+  var VERSION = '4.0.0-alpha.6';
   var DATA_KEY = 'bs.tooltip';
   var EVENT_KEY = '.' + DATA_KEY;
   var JQUERY_NO_CONFLICT = $.fn[NAME];
@@ -45,7 +45,8 @@ var Tooltip = function ($) {
     selector: false,
     placement: 'top',
     offset: '0 0',
-    constraints: []
+    constraints: [],
+    container: false
   };
 
   var DefaultType = {
@@ -58,7 +59,8 @@ var Tooltip = function ($) {
     selector: '(string|boolean)',
     placement: '(string|function)',
     offset: 'string',
-    constraints: 'array'
+    constraints: 'array',
+    container: '(string|element|boolean)'
   };
 
   var AttachmentMap = {
@@ -69,7 +71,7 @@ var Tooltip = function ($) {
   };
 
   var HoverState = {
-    IN: 'in',
+    SHOW: 'show',
     OUT: 'out'
   };
 
@@ -88,7 +90,7 @@ var Tooltip = function ($) {
 
   var ClassName = {
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
@@ -123,6 +125,7 @@ var Tooltip = function ($) {
       this._timeout = 0;
       this._hoverState = '';
       this._activeTrigger = {};
+      this._isTransitioning = false;
       this._tether = null;
 
       // protected
@@ -168,7 +171,7 @@ var Tooltip = function ($) {
         }
       } else {
 
-        if ($(this.getTipElement()).hasClass(ClassName.IN)) {
+        if ($(this.getTipElement()).hasClass(ClassName.SHOW)) {
           this._leave(null, this);
           return;
         }
@@ -185,6 +188,7 @@ var Tooltip = function ($) {
       $.removeData(this.element, this.constructor.DATA_KEY);
 
       $(this.element).off(this.constructor.EVENT_KEY);
+      $(this.element).closest('.modal').off('hide.bs.modal');
 
       if (this.tip) {
         $(this.tip).remove();
@@ -204,9 +208,15 @@ var Tooltip = function ($) {
     Tooltip.prototype.show = function show() {
       var _this = this;
 
-      var showEvent = $.Event(this.constructor.Event.SHOW);
+      if ($(this.element).css('display') === 'none') {
+        throw new Error('Please use show on visible elements');
+      }
 
+      var showEvent = $.Event(this.constructor.Event.SHOW);
       if (this.isWithContent() && this._isEnabled) {
+        if (this._isTransitioning) {
+          throw new Error('Tooltip is transitioning');
+        }
         $(this.element).trigger(showEvent);
 
         var isInTheDom = $.contains(this.element.ownerDocument.documentElement, this.element);
@@ -231,7 +241,9 @@ var Tooltip = function ($) {
 
         var attachment = this._getAttachment(placement);
 
-        $(tip).data(this.constructor.DATA_KEY, this).appendTo(document.body);
+        var container = this.config.container === false ? document.body : $(this.config.container);
+
+        $(tip).data(this.constructor.DATA_KEY, this).appendTo(container);
 
         $(this.element).trigger(this.constructor.Event.INSERTED);
 
@@ -249,11 +261,12 @@ var Tooltip = function ($) {
         Util.reflow(tip);
         this._tether.position();
 
-        $(tip).addClass(ClassName.IN);
+        $(tip).addClass(ClassName.SHOW);
 
         var complete = function complete() {
           var prevHoverState = _this._hoverState;
           _this._hoverState = null;
+          _this._isTransitioning = false;
 
           $(_this.element).trigger(_this.constructor.Event.SHOWN);
 
@@ -263,6 +276,7 @@ var Tooltip = function ($) {
         };
 
         if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+          this._isTransitioning = true;
           $(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(Tooltip._TRANSITION_DURATION);
           return;
         }
@@ -276,13 +290,17 @@ var Tooltip = function ($) {
 
       var tip = this.getTipElement();
       var hideEvent = $.Event(this.constructor.Event.HIDE);
+      if (this._isTransitioning) {
+        throw new Error('Tooltip is transitioning');
+      }
       var complete = function complete() {
-        if (_this2._hoverState !== HoverState.IN && tip.parentNode) {
+        if (_this2._hoverState !== HoverState.SHOW && tip.parentNode) {
           tip.parentNode.removeChild(tip);
         }
 
         _this2.element.removeAttribute('aria-describedby');
         $(_this2.element).trigger(_this2.constructor.Event.HIDDEN);
+        _this2._isTransitioning = false;
         _this2.cleanupTether();
 
         if (callback) {
@@ -296,10 +314,14 @@ var Tooltip = function ($) {
         return;
       }
 
-      $(tip).removeClass(ClassName.IN);
+      $(tip).removeClass(ClassName.SHOW);
 
-      if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+      this._activeTrigger[Trigger.CLICK] = false;
+      this._activeTrigger[Trigger.FOCUS] = false;
+      this._activeTrigger[Trigger.HOVER] = false;
 
+      if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+        this._isTransitioning = true;
         $(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
       } else {
         complete();
@@ -323,7 +345,7 @@ var Tooltip = function ($) {
 
       this.setElementContent($tip.find(Selector.TOOLTIP_INNER), this.getTitle());
 
-      $tip.removeClass(ClassName.FADE).removeClass(ClassName.IN);
+      $tip.removeClass(ClassName.FADE + ' ' + ClassName.SHOW);
 
       this.cleanupTether();
     };
@@ -373,13 +395,23 @@ var Tooltip = function ($) {
 
       triggers.forEach(function (trigger) {
         if (trigger === 'click') {
-          $(_this3.element).on(_this3.constructor.Event.CLICK, _this3.config.selector, $.proxy(_this3.toggle, _this3));
+          $(_this3.element).on(_this3.constructor.Event.CLICK, _this3.config.selector, function (event) {
+            return _this3.toggle(event);
+          });
         } else if (trigger !== Trigger.MANUAL) {
           var eventIn = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSEENTER : _this3.constructor.Event.FOCUSIN;
           var eventOut = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSELEAVE : _this3.constructor.Event.FOCUSOUT;
 
-          $(_this3.element).on(eventIn, _this3.config.selector, $.proxy(_this3._enter, _this3)).on(eventOut, _this3.config.selector, $.proxy(_this3._leave, _this3));
+          $(_this3.element).on(eventIn, _this3.config.selector, function (event) {
+            return _this3._enter(event);
+          }).on(eventOut, _this3.config.selector, function (event) {
+            return _this3._leave(event);
+          });
         }
+
+        $(_this3.element).closest('.modal').on('hide.bs.modal', function () {
+          return _this3.hide();
+        });
       });
 
       if (this.config.selector) {
@@ -414,14 +446,14 @@ var Tooltip = function ($) {
         context._activeTrigger[event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER] = true;
       }
 
-      if ($(context.getTipElement()).hasClass(ClassName.IN) || context._hoverState === HoverState.IN) {
-        context._hoverState = HoverState.IN;
+      if ($(context.getTipElement()).hasClass(ClassName.SHOW) || context._hoverState === HoverState.SHOW) {
+        context._hoverState = HoverState.SHOW;
         return;
       }
 
       clearTimeout(context._timeout);
 
-      context._hoverState = HoverState.IN;
+      context._hoverState = HoverState.SHOW;
 
       if (!context.config.delay || !context.config.delay.show) {
         context.show();
@@ -429,7 +461,7 @@ var Tooltip = function ($) {
       }
 
       context._timeout = setTimeout(function () {
-        if (context._hoverState === HoverState.IN) {
+        if (context._hoverState === HoverState.SHOW) {
           context.show();
         }
       }, context.config.delay.show);
@@ -513,7 +545,7 @@ var Tooltip = function ($) {
     Tooltip._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY);
-        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' ? config : null;
+        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' && config;
 
         if (!data && /dispose|hide/.test(config)) {
           return;
diff --git a/assets/javascripts/bootstrap/util.js b/assets/javascripts/bootstrap/util.js
index 6bb47a7..890b05d 100644
--- a/assets/javascripts/bootstrap/util.js
+++ b/assets/javascripts/bootstrap/util.js
@@ -1,6 +1,6 @@
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): util.js
+ * Bootstrap (v4.0.0-alpha.6): util.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -55,7 +55,9 @@ var Util = function ($) {
 
     for (var name in TransitionEndEvent) {
       if (el.style[name] !== undefined) {
-        return { end: TransitionEndEvent[name] };
+        return {
+          end: TransitionEndEvent[name]
+        };
       }
     }
 
@@ -102,9 +104,8 @@ var Util = function ($) {
 
     getUID: function getUID(prefix) {
       do {
-        /* eslint-disable no-bitwise */
+        // eslint-disable-next-line no-bitwise
         prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
-        /* eslint-enable no-bitwise */
       } while (document.getElementById(prefix));
       return prefix;
     },
@@ -119,7 +120,7 @@ var Util = function ($) {
       return selector;
     },
     reflow: function reflow(element) {
-      new Function('bs', 'return bs')(element.offsetHeight);
+      return element.offsetHeight;
     },
     triggerTransitionEnd: function triggerTransitionEnd(element) {
       $(element).trigger(transition.end);
@@ -132,13 +133,7 @@ var Util = function ($) {
         if (configTypes.hasOwnProperty(property)) {
           var expectedTypes = configTypes[property];
           var value = config[property];
-          var valueType = void 0;
-
-          if (value && isElement(value)) {
-            valueType = 'element';
-          } else {
-            valueType = toType(value);
-          }
+          var valueType = value && isElement(value) ? 'element' : toType(value);
 
           if (!new RegExp(expectedTypes).test(valueType)) {
             throw new Error(componentName.toUpperCase() + ': ' + ('Option "' + property + '" provided type "' + valueType + '" ') + ('but expected type "' + expectedTypes + '".'));