fix compile bugs

src/app/app.component.ts

@@ -29,7 +29,7 @@ export class AppComponent {
   constructor(private tesService: TesService,
               private authService: AuthorisationService,
               private computeSitesService: ComputesitesService,
-              private settingsService: SettingsService,
+              public settingsService: SettingsService,
               private browserWindowService: BrowserWindowService,
               public snackBar: MatSnackBar,
               private overlayContainer: OverlayContainer,

src/app/launch-dialog/launch-dialog.component.html

@@ -13,7 +13,7 @@
         </mat-expansion-panel>
     </mat-accordion>
     </div>
-    <mat-accordion style="width: 100%" [displayMode]="flat">
+    <mat-accordion style="width: 100%" [displayMode]="'flat'">
         <mat-expansion-panel style="width: 100%" [expanded]="true">
             <mat-expansion-panel-header>
                 <mat-panel-title> 

src/app/launcher/launcher.component.html

@@ -9,7 +9,7 @@
                 </mat-list-item>
             </mat-list>
             <div style="border-style: solid none none none ; border-width: 1px; border-color: var(--panel-border-color); box-sizing: border-box">
-            <mat-accordion style="width: 100%" [displayMode]="flat">
+            <mat-accordion style="width: 100%" [displayMode]="'flat'">
                 <div *ngFor="let id of (computeSitesService.appidentities | async)" style="border-style: none none solid none; border-width: 1px; border-color: var(--panel-border-color) ">
                     <!--<mat-expansion-panel (afterExpand)="selectId(id)" (closed)="selectId(id)" style="width: 100%">-->
                     <mat-expansion-panel style="width: 100%" [expanded]="(identity$ | async) === id" class="mat-elevation-z0">

src/app/launcher/launcher.component.ts

@@ -67,7 +67,7 @@ export class LauncherComponent implements OnInit {
                 private router: Router,
                 private route: ActivatedRoute,
                 private strudelappsService: StrudelappsService,
-                private settingsService: SettingsService,
+                public settingsService: SettingsService,
                 ) {
 
     this.app$ = new BehaviorSubject<Strudelapp>(null);

src/app/noaccount/noaccount.component.ts

@@ -13,7 +13,7 @@ import { SshAuthzServer } from '../identity';
 })
 export class NoaccountComponent implements OnInit {
 
-  private site: SshAuthzServer;
+  public site: SshAuthzServer;
   private subscription: Subscription;
 
   constructor(private route: ActivatedRoute, private authService: AuthorisationService) {