upgrade dependencies (migrate to Angular 10)

ui/src/polyfills.ts

@@ -1,3 +1,7 @@
+/***************************************************************************************************
+ * Load `$localize` onto the global scope - used if i18n tags appear in Angular templates.
+ */
+import '@angular/localize/init';
 /**
  * This file includes polyfills needed by Angular and is loaded before the app.
  * You can add your own extra polyfills to this file.
@@ -18,7 +22,9 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/**
+ * IE11 requires the following for NgClass support on SVG elements
+ */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
@@ -35,7 +41,7 @@
  * will put import in the top of bundle, so user need to create a separate file
  * in this directory (for example: zone-flags.ts), and put the following flags
  * into that file, and then add the following code before importing zone.js.
- * import './zone-flags.ts';
+ * import './zone-flags';
  *
  * The flags allowed in zone-flags.ts are listed here.
  *