build: update to angular-v9.1.12 (#1215)

Fixes: #1216

src/app/core/http/http.service.ts

@@ -14,7 +14,7 @@ import { ApiPrefixInterceptor } from './api-prefix.interceptor';
  * HttpClient is declared in a re-exported module, so we have to extend the original module to make it work properly.
  * (see https://github.com/Microsoft/TypeScript/issues/13897)
  */
-declare module '@angular/common/http/src/client' {
+declare module '@angular/common/http/http' {
 
   /**
    * Augment HttpClient with the added configuration methods from HttpService, to allow in-place replacement of

src/app/core/route/route-reusable-strategy.ts

@@ -1,11 +1,13 @@
 /** Angular Imports */
 import { ActivatedRouteSnapshot, DetachedRouteHandle, RouteReuseStrategy } from '@angular/router';
+import { Injectable } from '@angular/core';
 
 /**
  * A route strategy allowing for explicit route reuse.
  * Used as a workaround for https://github.com/angular/angular/issues/18374
  * To reuse a given route, add `data: { reuse: true }` to the route definition.
  */
+@Injectable()
 export class RouteReusableStrategy extends RouteReuseStrategy {
 
   public shouldDetach(route: ActivatedRouteSnapshot): boolean {

src/app/core/shell/sidenav/sidenav.component.ts

@@ -121,7 +121,9 @@ export class SidenavComponent implements OnInit {
    */
   pushActivity(path: string) {
     const activity = this.frequentActivities.find((entry: any) => entry.path === path);
-    this.mappedActivities.push(activity);
+    if (!this.mappedActivities.includes(activity)) {
+      this.mappedActivities.push(activity);
+    }
   }
 
 }

src/app/core/shell/toolbar/toolbar.component.ts

@@ -1,6 +1,7 @@
 /** Angular Imports */
 import { Component, OnInit, Input, EventEmitter, Output } from '@angular/core';
-import { MatSidenav, MatDialog } from '@angular/material';
+import { MatDialog } from '@angular/material/dialog';
+import { MatSidenav } from '@angular/material/sidenav';
 import { BreakpointObserver, Breakpoints } from '@angular/cdk/layout';
 import { Router } from '@angular/router';