fixed issues with ngrx platform upgrade: selectors, tests and router state in the dev tools

src/app/browser-app.module.ts

@@ -25,7 +25,8 @@ import { CoreModule } from './core/core.module';
 import { AppModule } from './app.module';
 
 import { AppComponent } from './app.component';
-import { StoreRouterConnectingModule } from '@ngrx/router-store';
+import { RouterStateSerializer, StoreRouterConnectingModule } from '@ngrx/router-store';
+import { DSpaceRouterStateSerializer } from './shared/ngrx/dspace-router-state-serializer';
 
 export function init(cache: TransferState) {
   return () => {
@@ -70,6 +71,10 @@ export function HttpLoaderFactory(http: Http) {
       deps: [
         TransferState
       ]
+    },
+    {
+      provide: RouterStateSerializer,
+      useClass: DSpaceRouterStateSerializer
     }
   ]
 })