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

less/_carousel.less

@@ -27,24 +27,24 @@
 
     // WebKit CSS3 transforms for supported devices
     @media all and (transform-3d), (-webkit-transform-3d) {
-      transition: transform .6s ease-in-out;
-      backface-visibility: hidden;
-      perspective: 1000;
+      .transition-transform(~'0.6s ease-in-out');
+      .backface-visibility(~'hidden');
+      .perspective(1000);
 
       &.next,
       &.active.right {
-        transform: translate3d(100%, 0, 0);
+        .translate3d(100%, 0, 0);
         left: 0;
       }
       &.prev,
       &.active.left {
-        transform: translate3d(-100%, 0, 0);
+        .translate3d(-100%, 0, 0);
         left: 0;
       }
       &.next.left,
       &.prev.right,
       &.active {
-        transform: translate3d(0, 0, 0);
+        .translate3d(0, 0, 0);
         left: 0;
       }
     }
@@ -134,6 +134,7 @@
     height: 20px;
     margin-top: -10px;
     font-family: serif;
+    line-height: 1;
   }
   .icon-prev {
     left: 50%;
@@ -143,8 +144,6 @@
     right: 50%;
     margin-right: -10px;
   }
-
-
   .icon-prev {
     &:before {
       content: '\2039';// SINGLE LEFT-POINTING ANGLE QUOTATION MARK (U+2039)