npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.5.0/bower_components/app-router/src/app-router.js

 (function(window, document) {
   // <app-route path="/path" [import="/page/cust-el.html"] [element="cust-el"] [template]></app-route>
   document.registerElement('app-route', {
     prototype: Object.create(HTMLElement.prototype)
   });
 
   // <active-route></active-route> holds the active route's content when `shadow` is not enabled
   document.registerElement('active-route', {
     prototype: Object.create(HTMLElement.prototype)
   });
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       }
     }
 
     return args;
   };
 
   document.registerElement('app-router', {
     prototype: router
   });
 })(window, document);