switch resizable handles based on rtl direction

lib/scripts/media.js

@@ -484,10 +484,10 @@ var dw_mediamanager = {
      * @author Kate Arzamastseva <pshns@ukr.net>
      */
     update_resizable: function () {
-        $resizables = dw_mediamanager.$resizables();
+        var $resizables = dw_mediamanager.$resizables();
 
         $resizables.resizable({
-            handles: 'w', //TODO switch between e and w depending on language
+            handles: (jQuery('html[dir=rtl]') ? 'w' :'e'),
             resize: function(event, ui){
                 var $page = jQuery('#mediamanager__page');
                 var widthFull = $page.width();