fix(polyfills): web-animations-js should be in browser.polyfills.ts (#582)

Author: ruant

ClientApp/polyfills/browser.polyfills.ts

@@ -1,3 +1,5 @@
 import './polyfills.ts';
 
 import 'zone.js/dist/zone';
+import 'reflect-metadata';
+// import 'web-animations-js';  // Run `npm install --save web-animations-js`.

ClientApp/polyfills/polyfills.ts

@@ -24,8 +24,6 @@
 /** IE10 and IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
-// import 'web-animations-js';  // Run `npm install --save web-animations-js`.
-
 /** Evergreen browsers require these. **/
 import 'core-js/es6/reflect';
 import 'core-js/es7/reflect';