fix: forgot to remove window.App form register module

modules/register/register.js

 define([
-    'text!register.html!strip'
+    'app'
+  , 'text!register.html!strip'
   , 'css!register'
   ],
-  function (source) {
+  function (App, source) {
     var response = {};
 
     response.data = source;
     response.callback = function (self) {
-      if (window.App === undefined) {
+      if (App === undefined) {
         def = new $.Deferred;
 
         def.done(function(gadget) {
           // prefix instance-ids, pass JSON
-          window.App.renderGadgets(gadget);
+          App.renderGadgets(gadget);
         });
 
         window.fallbackLoader.deferreds.push(def);
         window.fallbackLoader.args.push(self);
       } else {
         // prefix instance-ids, pass JSON
-        window.App.renderGadgets(self);
+        App.renderGadgets(self);
       }
     };