Merge branch 'master' into derp

Conflicts:
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	docs/_includes/customizer-variables.html
	docs/_includes/js/overview.html
	docs/assets/js/customize.min.js
	docs/assets/js/raw-files.min.js
	docs/browser-bugs.html
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css
	less/carousel.less

less/.csslintrc

@@ -3,6 +3,7 @@
   "box-sizing": false,
   "box-model": false,
   "compatible-vendor-prefixes": false,
+  "fallback-colors": false,
   "floats": false,
   "font-sizes": false,
   "gradients": false,

less/buttons.less

@@ -88,6 +88,7 @@
 
   &,
   &:active,
+  &.active,
   &[disabled],
   fieldset[disabled] & {
     background-color: transparent;

less/carousel.less

@@ -27,7 +27,7 @@
 
     // WebKit CSS3 transforms for supported devices
     @media all and (transform-3d), (-webkit-transform-3d) {
-      transition: transform(0.6s ease-in-out);
+      transition: transform .6s ease-in-out;
       backface-visibility: hidden;
       perspective: 1000;