Provides the quizname in the url when requesting a free member group

src/app/root/nickname-chooser/member-group-select/member-group-select.component.ts

@@ -46,7 +46,7 @@ export class MemberGroupSelectComponent {
       }
 
       if (this.quizService.quiz.sessionConfig.nicks.autoJoinToGroup) {
-        this.quizApiService.getFreeMemberGroup().subscribe((data: IMessage) => {
+        this.quizApiService.getFreeMemberGroup(this.quizService.quiz.name).subscribe((data: IMessage) => {
           if (data.status === StatusProtocol.Success && data.step === MessageProtocol.GetFreeMemberGroup) {
             this.addToGroup(data.payload.groupName);
           }

src/app/service/api/quiz/quiz-api.service.spec.ts

@@ -53,7 +53,7 @@ describe('QuizApiService', () => {
       },
     };
 
-    service.getFreeMemberGroup().subscribe();
+    service.getFreeMemberGroup(quizName).subscribe();
     backend.expectOne(service.getFreeMemberGroupUrl).flush(quizStatusData);
 
     expect(service).toBeTruthy();

src/app/service/api/quiz/quiz-api.service.ts

@@ -148,8 +148,8 @@ export class QuizApiService {
       { headers: { authorization: sessionStorage.getItem(StorageKey.QuizToken) || sessionStorage.getItem(StorageKey.PrivateKey) } });
   }
 
-  public getFreeMemberGroup(): Observable<IMessage> {
-    return this.http.get<IMessage>(`${this._getFreeMemberGroupUrl}`,
+  public getFreeMemberGroup(quizName: string): Observable<IMessage> {
+    return this.http.get<IMessage>(`${this._getFreeMemberGroupUrl}/${quizName}`,
       { headers: { authorization: sessionStorage.getItem(StorageKey.QuizToken) || sessionStorage.getItem(StorageKey.PrivateKey) } });
   }