fix e2e-test

by giving systemAnnouncement a starting value

scripts/new_version.py

@@ -115,7 +115,7 @@ new_version = _increment_version(old_version)
 _update_version_in_file(new_version)
 _run_software()
 try:
-    _run_tests()
+    _run_tests()  # TODO continues even if it fails!
 except subprocess.SubprocessError:
     _stop_software()
     _undo_version_update_in_files()

src/app/app-root/login/login.component.ts

@@ -26,7 +26,7 @@ export class LoginComponent implements OnInit, OnDestroy {
     pw: new FormControl('')
   });
 
-  systemAnnouncement: string;
+  systemAnnouncement: string = '-';
 
   constructor(
     public mds: MainDataService,