[Common UI] Specs for edit controllers

Add specs for controllers used to support Edit mode,
one of the common UI elements being transitioned for
WTD-574.

platform/commonUI/edit/src/EditController.js

@@ -20,6 +20,9 @@ define(
 
             setNavigation(navigationService.getNavigation());
             navigationService.addListener(setNavigation);
+            $scope.$on("$destroy", function () {
+                navigationService.removeListener(setNavigation);
+            });
         }
 
         return EditController;