npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

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

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       }
       this.async(function() {
         this.updateSize(0, this.duration);
       });
     }
 
   });
 
 </script>
 </polymer-element>