Enables context isolation for loading window

loading.html

@@ -19,9 +19,8 @@
         <span class="dot"></span>
         <span class="dot"></span>
       </div>
-      <div class="message"></div>
+      <div id="message"></div>
     </div>
-    <script type="text/javascript" src="js/components.js"></script>
     <script type="text/javascript" src="ts/windows/loading/start.js"></script>
   </body>
 </html>