[Mobile] Multiple mobile Safari fixes

open #74
New mixins to prefix '-webkit-' to props and vals;
'flex' classes use new webkit mixins;
Fixed flex layout of .object-browse-bar and
.context-available element;
Migrated CSS to remove small .scss include files;

platform/commonUI/general/res/sass/mobile/_layout.scss

@@ -159,7 +159,7 @@
         }
         .pane.right-repr {
             left: 0 !important;
-            transform: translateX($proporMenuOnly);
+	        @include webkitProp(transform, translateX($proporMenuOnly));
             #content-area {
                 opacity: 0;
             }