Merge branch 'master' into derp

Conflicts:
	Gruntfile.js
	dist/css/bootstrap-theme.css
	dist/css/bootstrap-theme.css.map
	dist/css/bootstrap-theme.min.css
	dist/css/bootstrap.css
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	docs/_includes/components/dropdowns.html
	docs/_includes/components/media.html
	docs/_includes/components/navs.html
	docs/_includes/components/progress-bars.html
	docs/_includes/components/responsive-embed.html
	docs/_includes/css/buttons.html
	docs/_includes/css/forms.html
	docs/_includes/css/less.html
	docs/_includes/css/overview.html
	docs/_includes/css/responsive-utilities.html
	docs/_includes/customizer-variables.html
	docs/_includes/getting-started/browser-device-support.html
	docs/_includes/getting-started/grunt.html
	docs/_includes/getting-started/template.html
	docs/_includes/header.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/popovers.html
	docs/_includes/js/scrollspy.html
	docs/_includes/js/tabs.html
	docs/_includes/js/tooltips.html
	docs/_includes/nav/components.html
	docs/_includes/nav/getting-started.html
	docs/_layouts/default.html
	docs/about.html
	docs/assets/css/docs.min.css
	docs/assets/css/src/docs.css
	docs/assets/js/customize.min.js
	docs/assets/js/docs.min.js
	docs/assets/js/raw-files.min.js
	docs/browser-bugs.html
	docs/components.html
	docs/components/navbar.md
	docs/css.html
	docs/dist/css/bootstrap-theme.css
	docs/dist/css/bootstrap-theme.css.map
	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/examples/blog/index.html
	docs/examples/carousel/index.html
	docs/examples/cover/index.html
	docs/examples/dashboard/index.html
	docs/examples/grid/index.html
	docs/examples/jumbotron-narrow/index.html
	docs/examples/jumbotron/index.html
	docs/examples/justified-nav/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/offcanvas/index.html
	docs/examples/signin/index.html
	docs/examples/starter-template/index.html
	docs/examples/sticky-footer-navbar/index.html
	docs/examples/sticky-footer/index.html
	docs/examples/theme/index.html
	docs/examples/tooltip-viewport/index.html
	docs/getting-started.html
	docs/javascript.html
	docs/migration.html
	less/_animation.less
	less/_modal.less
	less/_navbar.less
	less/_variables.less
	less/glyphicons.less
	less/navs.less
	less/panels.less
	less/progress-bars.less

docs/javascript/collapse.md

@@ -33,7 +33,7 @@ Using the collapse plugin, we built a simple accordion by extending the panel co
   <div class="panel panel-default">
     <div class="panel-heading" role="tab" id="headingTwo">
       <h4 class="panel-title">
-        <a data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
+        <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
           Collapsible Group Item #2
         </a>
       </h4>
@@ -47,7 +47,7 @@ Using the collapse plugin, we built a simple accordion by extending the panel co
   <div class="panel panel-default">
     <div class="panel-heading" role="tab" id="headingThree">
       <h4 class="panel-title">
-        <a data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
+        <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
           Collapsible Group Item #3
         </a>
       </h4>