[Mobile] Reorganize

Reorganized the sass files. To incorporate, new
mobile directory, which holds all the mobile
sass code.

platform/commonUI/general/res/sass/items/_item.scss

@@ -96,6 +96,7 @@
 	                padding: $interiorMargin;
                 }
             }
+//            NOTE: make icon disappear
             .item-main {
                 @include phone {
                     display: none;