[Edit] Restructure source folder

Restructure sources associated with Edit mode; work on
WTD-788 has increased number of sources here so more
organization is useful.

platform/commonUI/edit/src/controllers/EditController.js

@@ -4,7 +4,7 @@
  * Module defining EditController. Created by vwoeltje on 11/14/14.
  */
 define(
-    ["./objects/EditableDomainObject"],
+    ["../objects/EditableDomainObject"],
     function (EditableDomainObject) {
         "use strict";