Improve sorting inside navigator

bower.json

@@ -1,7 +1,7 @@
 {
   "name": "grapesjs",
   "description": "Open source Web Template Editor",
-  "version": "0.5.20",
+  "version": "0.5.21",
   "author": "Artur Arseniev",
   "homepage": "http://grapesjs.com",
   "main": [

package.json

@@ -1,7 +1,7 @@
 {
   "name": "grapesjs",
   "description": "Open source Web Template Editor",
-  "version": "0.5.20",
+  "version": "0.5.21",
   "author": "Artur Arseniev",
   "license": "BSD-3-Clause",
   "homepage": "http://grapesjs.com",

src/utils/Sorter.js

@@ -626,6 +626,9 @@ define(function(require) {
           targetModel = $dst.data('model');
           dst = $dst.get(0);
 
+          if (targetModel && targetModel.view)
+            dst = targetModel.view.el;
+
           if (!targetModel)
             $dst = $dst.parent();
         }