npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.4.0/bower_components/core-ajax/core-ajax.html

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 Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
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 <!--
@@ skipping 325 matching lines @@
 
       this.response = this.error = null;
       this.activeRequest = args.url && this.xhr.request(args);
       return this.activeRequest;
     }
 
   });
 
 </script>
 </polymer-element>