enable polyfills

package.json

@@ -25,10 +25,13 @@
     "@nvxme/ngx-md-render": "^1.0.0-alpha.5",
     "bootstrap": "^3.3.7",
     "bootswatch": "^3.3.7",
+    "classlist.js": "^1.1.20150312",
     "core-js": "^2.5.0",
     "font-awesome": "^4.7.0",
+    "intl": "^1.2.5",
     "jquery": "^3.2.1",
     "rxjs": "^5.4.3",
+    "web-animations-js": "^2.3.1",
     "zone.js": "^0.8.16"
   },
   "devDependencies": {

src/polyfills.ts

@@ -19,26 +19,26 @@
  */
 
 /** IE9, IE10 and IE11 requires all of the following polyfills. **/
-// import 'core-js/es6/symbol';
-// import 'core-js/es6/object';
-// import 'core-js/es6/function';
-// import 'core-js/es6/parse-int';
-// import 'core-js/es6/parse-float';
-// import 'core-js/es6/number';
-// import 'core-js/es6/math';
-// import 'core-js/es6/string';
-// import 'core-js/es6/date';
-// import 'core-js/es6/array';
-// import 'core-js/es6/regexp';
-// import 'core-js/es6/map';
-// import 'core-js/es6/weak-map';
-// import 'core-js/es6/set';
+import 'core-js/es6/symbol';
+import 'core-js/es6/object';
+import 'core-js/es6/function';
+import 'core-js/es6/parse-int';
+import 'core-js/es6/parse-float';
+import 'core-js/es6/number';
+import 'core-js/es6/math';
+import 'core-js/es6/string';
+import 'core-js/es6/date';
+import 'core-js/es6/array';
+import 'core-js/es6/regexp';
+import 'core-js/es6/map';
+import 'core-js/es6/weak-map';
+import 'core-js/es6/set';
 
 /** IE10 and IE11 requires the following for NgClass support on SVG elements */
-// import 'classlist.js';  // Run `npm install --save classlist.js`.
+import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /** IE10 and IE11 requires the following to support `@angular/animation`. */
-// import 'web-animations-js';  // Run `npm install --save web-animations-js`.
+import 'web-animations-js';  // Run `npm install --save web-animations-js`.
 
 
 /** Evergreen browsers require these. **/
@@ -66,8 +66,8 @@ import 'zone.js/dist/zone';  // Included with Angular CLI.
  * Date, currency, decimal and percent pipes.
  * Needed for: All but Chrome, Firefox, Edge, IE11 and Safari 10
  */
-// import 'intl';  // Run `npm install --save intl`.
+import 'intl';  // Run `npm install --save intl`.
 /**
  * Need to import at least one locale-data with intl.
  */
-// import 'intl/locale-data/jsonp/en';
+import 'intl/locale-data/jsonp/en';