disable menu when not logged in

ui/hv2-ui/src/app/navigation/navigation.component.html

@@ -4,16 +4,16 @@
       [mode]="(isHandset$ | async) ? 'over' : 'side'"
       [opened]="(isHandset$ | async) === false">
     <mat-toolbar>Menu</mat-toolbar>
-    <mat-nav-list>
+    <mat-nav-list *ngIf="authenticated">
       <a mat-list-item href="/tenants">Meine Mieter/innen</a>
-    </mat-nav-list><mat-divider></mat-divider><mat-nav-list>
+    </mat-nav-list><mat-divider *ngIf="authenticated"></mat-divider><mat-nav-list *ngIf="authenticated">
       <a mat-list-item href="/flats">Meine Wohnungen</a>
       <a mat-list-item href="/parkings">Meine Garagen</a>
       <a mat-list-item href="/commercialunits">Meine Büros</a>
-    </mat-nav-list><mat-divider></mat-divider><mat-nav-list>
+    </mat-nav-list *ngIf="authenticated"><mat-divider *ngIf="authenticated"></mat-divider><mat-nav-list>
       <a mat-list-item href="/overheadadvances">Betriebskostensätze</a>
       <a mat-list-item href="/fees">Mietsätze</a>
-    </mat-nav-list><mat-divider></mat-divider><mat-nav-list>
+    </mat-nav-list *ngIf="authenticated"><mat-divider *ngIf="authenticated"></mat-divider><mat-nav-list>
       <a mat-list-item href="/premises">Meine Häuser</a>
     </mat-nav-list>
   </mat-sidenav>