Issue #2878684 by samuel.mortenson: Use String.match to correlate regions when...

Issue #2878684 by samuel.mortenson: Use String.match to correlate regions when switching Layouts in Panels IPE

Closes #2878684

panels_ipe/js/views/AppView.js

@@ -173,10 +173,15 @@
 
       // @todo Our backend should inform us of region suggestions.
       regions.each(function (region) {
-        // If a layout with the same name exists, copy our block collection.
-        var new_region = layout.get('regionCollection').get(region.get('name'));
+        var potential_regions = layout.get('regionCollection').filter(function (item) {
+          if (item.get('name') != null) {
+            return item.get('name').match(region.get('name')) || region.get('name').match(item.get('name'));
+          }
+        });
+        var new_region = layout.get('regionCollection').get(region.get('name')) || potential_regions[0];
+        // If a layout with a similar name exists, copy our block collection.
         if (new_region) {
-          new_region.set('blockCollection', region.get('blockCollection'));
+          new_region.get('blockCollection').add(region.get('blockCollection').toJSON());
         }
         // Otherwise add these blocks to our generic pool.
         else {