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/popovers.md

@@ -127,7 +127,7 @@ Use the `focus` trigger to dismiss popovers on the next click that the user make
 </div>
 
 {% example html %}
-<a href="#" tabindex="0" class="btn btn-lg btn-danger bs-docs-popover" data-toggle="popover" data-trigger="focus" title="Dismissible popover" data-content="And here's some amazing content. It's very engaging. Right?">Dismissible popover</a>
+<a href="#" tabindex="0" class="btn btn-lg btn-danger bs-docs-popover" role="button" data-toggle="popover" data-trigger="focus" title="Dismissible popover" data-content="And here's some amazing content. It's very engaging. Right?">Dismissible popover</a>
 {% endexample %}
 
 {% highlight js %}
@@ -265,19 +265,19 @@ Initializes popovers for an element collection.
 
 #### .popover('show')
 
-Reveals an elements popover.
+Reveals an element's popover. Popovers whose both title and content are zero-length are never displayed.
 
 {% highlight js %}$('#element').popover('show'){% endhighlight %}
 
 #### .popover('hide')
 
-Hides an elements popover.
+Hides an element's popover.
 
 {% highlight js %}$('#element').popover('hide'){% endhighlight %}
 
 #### .popover('toggle')
 
-Toggles an elements popover.
+Toggles an element's popover.
 
 {% highlight js %}$('#element').popover('toggle'){% endhighlight %}