Update to latest Bootstrap 3 (RC2)

assets/less/bootstrap.less

@@ -28,6 +28,7 @@
 
 // Components: common
 @import "component-animations.less";
+@import "input-groups.less";
 @import "dropdowns.less";
 @import "list-group.less";
 @import "panels.less";
@@ -54,7 +55,6 @@
 @import "labels.less";
 @import "badges.less";
 @import "progress-bars.less";
-@import "accordion.less";
 @import "carousel.less";
 @import "jumbotron.less";