added help component, improved prediction with model templates

src/app/services/api.service.ts

@@ -5,6 +5,7 @@ import {Observable} from 'rxjs';
 import {ErrorComponent} from '../error/error.component';
 import {ModalService} from '@inst-iot/bosch-angular-ui-components';
 
+// TODO: find solution when client wants to visit subpage but is not logged in to redirect to login without showing request failed errors
 
 @Injectable({
   providedIn: 'root'