Merge branch 'master' into v4

Conflicts:
	Gruntfile.js
	_config.yml
	dist/css/bootstrap-theme.css
	dist/css/bootstrap-theme.min.css
	dist/css/bootstrap.css
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	dist/fonts/glyphicons-halflings-regular.eot
	dist/fonts/glyphicons-halflings-regular.svg
	dist/fonts/glyphicons-halflings-regular.ttf
	dist/fonts/glyphicons-halflings-regular.woff
	docs/_data/glyphicons.yml
	docs/_includes/components/alerts.html
	docs/_includes/components/badges.html
	docs/_includes/components/button-dropdowns.html
	docs/_includes/components/button-groups.html
	docs/_includes/components/dropdowns.html
	docs/_includes/components/glyphicons.html
	docs/_includes/components/input-groups.html
	docs/_includes/components/labels.html
	docs/_includes/components/media.html
	docs/_includes/components/navbar.html
	docs/_includes/components/navs.html
	docs/_includes/components/pagination.html
	docs/_includes/components/panels.html
	docs/_includes/components/progress-bars.html
	docs/_includes/css/buttons.html
	docs/_includes/css/forms.html
	docs/_includes/css/grid.html
	docs/_includes/css/helpers.html
	docs/_includes/css/images.html
	docs/_includes/css/less.html
	docs/_includes/css/responsive-utilities.html
	docs/_includes/css/sass.html
	docs/_includes/css/tables.html
	docs/_includes/css/type.html
	docs/_includes/getting-started/accessibility.html
	docs/_includes/getting-started/browser-device-support.html
	docs/_includes/getting-started/community.html
	docs/_includes/getting-started/download.html
	docs/_includes/getting-started/examples.html
	docs/_includes/getting-started/whats-included.html
	docs/_includes/js/affix.html
	docs/_includes/js/alerts.html
	docs/_includes/js/buttons.html
	docs/_includes/js/carousel.html
	docs/_includes/js/collapse.html
	docs/_includes/js/dropdowns.html
	docs/_includes/js/modal.html
	docs/_includes/js/overview.html
	docs/_includes/js/tabs.html
	docs/_includes/nav/components.html
	docs/_includes/nav/css.html
	docs/_includes/nav/javascript.html
	docs/_includes/nav/main.html
	docs/about.html
	docs/assets/css/docs.min.css
	docs/assets/js/customize.min.js
	docs/assets/js/raw-files.min.js
	docs/dist/css/bootstrap-theme.css
	docs/dist/css/bootstrap-theme.min.css
	docs/dist/css/bootstrap.css
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css
	docs/dist/fonts/glyphicons-halflings-regular.eot
	docs/dist/fonts/glyphicons-halflings-regular.svg
	docs/dist/fonts/glyphicons-halflings-regular.ttf
	docs/dist/fonts/glyphicons-halflings-regular.woff
	docs/examples/carousel/index.html
	docs/examples/navbar-fixed-top/index.html
	docs/examples/navbar-static-top/index.html
	docs/examples/navbar/index.html
	docs/examples/non-responsive/index.html
	docs/examples/non-responsive/non-responsive.css
	docs/examples/sticky-footer-navbar/index.html
	docs/examples/theme/index.html
	fonts/glyphicons-halflings-regular.eot
	fonts/glyphicons-halflings-regular.svg
	fonts/glyphicons-halflings-regular.ttf
	fonts/glyphicons-halflings-regular.woff
	less/_carousel.less
	less/_forms.less
	less/glyphicons.less

docs/assets/js/src/customizer.js

@@ -11,7 +11,7 @@
 window.onload = function () { // wait for load in a dumb way because B-0
   'use strict';
   var cw = '/*!\n' +
-           ' * Bootstrap v3.3.0 (http://getbootstrap.com)\n' +
+           ' * Bootstrap v3.3.1 (http://getbootstrap.com)\n' +
            ' * Copyright 2011-' + new Date().getFullYear() + ' Twitter, Inc.\n' +
            ' * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n' +
            ' */\n\n'
@@ -22,8 +22,8 @@ window.onload = function () { // wait for load in a dumb way because B-0
   function showError(msg, err) {
     $('<div id="bsCustomizerAlert" class="bs-customizer-alert">' +
         '<div class="container">' +
-          '<a href="#bsCustomizerAlert" data-dismiss="alert" class="close pull-right">&times;</a>' +
-          '<p class="bs-customizer-alert-text"><span class="glyphicon glyphicon-warning-sign"></span>' + msg + '</p>' +
+          '<a href="#bsCustomizerAlert" data-dismiss="alert" class="close pull-right" aria-label="Close" role="button"><span aria-hidden="true">&times;</span></a>' +
+          '<p class="bs-customizer-alert-text"><span class="glyphicon glyphicon-warning-sign" aria-hidden="true"></span><span class="sr-only">Warning:</span>' + msg + '</p>' +
           (err.extract ? '<pre class="bs-customizer-alert-extract">' + err.extract.join('\n') + '</pre>' : '') +
         '</div>' +
       '</div>').appendTo('body').alert()
@@ -32,7 +32,7 @@ window.onload = function () { // wait for load in a dumb way because B-0
 
   function showSuccess(msg) {
     $('<div class="bs-callout bs-callout-info">' +
-      '<button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>' + msg +
+      '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>' + msg +
     '</div>').insertAfter('.bs-customize-download')
   }
 
@@ -50,7 +50,7 @@ window.onload = function () { // wait for load in a dumb way because B-0
   }
 
   function showAlert(type, msg, insertAfter) {
-    $('<div class="alert alert-' + type + '">' + msg + '<button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button></div>')
+    $('<div class="alert alert-' + type + '">' + msg + '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button></div>')
       .insertAfter(insertAfter)
   }