Update Twitter Bootstrap upto v3.1.1.

_assets/vendor/bootstrap/js/button.js

@@ -1,31 +1,22 @@
 /* ========================================================================
- * Bootstrap: button.js v3.0.3
+ * Bootstrap: button.js v3.1.1
  * http://getbootstrap.com/javascript/#buttons
  * ========================================================================
- * Copyright 2013 Twitter, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2011-2014 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
 
-+function ($) { "use strict";
++function ($) {
+  'use strict';
 
   // BUTTON PUBLIC CLASS DEFINITION
   // ==============================
 
   var Button = function (element, options) {
-    this.$element = $(element)
-    this.options  = $.extend({}, Button.DEFAULTS, options)
+    this.$element  = $(element)
+    this.options   = $.extend({}, Button.DEFAULTS, options)
+    this.isLoading = false
   }
 
   Button.DEFAULTS = {
@@ -45,25 +36,26 @@
     $el[val](data[state] || this.options[state])
 
     // push to event loop to allow forms to submit
-    setTimeout(function () {
-      state == 'loadingText' ?
-        $el.addClass(d).attr(d, d) :
-        $el.removeClass(d).removeAttr(d);
-    }, 0)
+    setTimeout($.proxy(function () {
+      if (state == 'loadingText') {
+        this.isLoading = true
+        $el.addClass(d).attr(d, d)
+      } else if (this.isLoading) {
+        this.isLoading = false
+        $el.removeClass(d).removeAttr(d)
+      }
+    }, this), 0)
   }
 
   Button.prototype.toggle = function () {
-    var $parent = this.$element.closest('[data-toggle="buttons"]')
     var changed = true
+    var $parent = this.$element.closest('[data-toggle="buttons"]')
 
     if ($parent.length) {
       var $input = this.$element.find('input')
-      if ($input.prop('type') === 'radio') {
-        // see if clicking on current one
-        if ($input.prop('checked') && this.$element.hasClass('active'))
-          changed = false
-        else
-          $parent.find('.active').removeClass('active')
+      if ($input.prop('type') == 'radio') {
+        if ($input.prop('checked') && this.$element.hasClass('active')) changed = false
+        else $parent.find('.active').removeClass('active')
       }
       if (changed) $input.prop('checked', !this.$element.hasClass('active')).trigger('change')
     }