fix(core): adding es7/array polyfill to support old browsers

Author: xmlking

apps/webapp/src/polyfills.ts

@@ -74,3 +74,4 @@ import 'zone.js/dist/zone'; // Included with Angular CLI.
 // By Sumo
 // Add global to window, assigning the value of window itself.
 (window as any).global = window;
+import 'core-js/es7/array';