Move elements/ to ui/

appengine/swarming/ui/polymer05/stats-app.html

 <!--
 # Copyright 2015 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 -->
 
 <!--
 @group Swarming Elements
 
@@ skipping 165 matching lines @@
     ajaxLoadingChanged: function(oldValue, newValue) {
       if (newValue) {
         this.$.loading.active = true;
       } else {
         this.$.loading.active = false;
       }
     }
   });
   </script>
 </polymer-element>