MAGETWO-31855: UI improvements

- CR updates

Author: Oleg Zinoviev

lib/web/css/source/lib/utilities.less

@@ -2,7 +2,9 @@
 //  * @copyright Copyright (c) 2014 X.commerce, Inc. (http://www.magentocommerce.com)
 //  */
 
-// convert to rem
+//
+//    Convert to rem
+//--------------------------------------
 .to-rem(
     @_value
 ) when not (@_value = false) and not (@_value = '') {