Merge branch '79-follow-up-from-resolve-httpservice-error-handling' into 'master'

Resolve "Follow-up from "Resolve "HttpService - Error handling"""

Closes #79

See merge request swtp-block-ws17/arsnova-angular-frontend!81

src/app/error-handling.service.spec.ts → src/app/base-http.service.spec.ts

 import { TestBed, inject } from '@angular/core/testing';
 
-import { ErrorHandlingService } from './error-handling.service';
+import { BaseHttpService } from './base-http.service';
 
-describe('ErrorHandlingService', () => {
+describe('BaseHttpService', () => {
   beforeEach(() => {
     TestBed.configureTestingModule({
-      providers: [ErrorHandlingService]
+      providers: [BaseHttpService]
     });
   });
 
-  it('should be created', inject([ErrorHandlingService], (service: ErrorHandlingService) => {
+  it('should be created', inject([BaseHttpService], (service: BaseHttpService) => {
     expect(service).toBeTruthy();
   }));
 });

src/app/error-handling.service.ts → src/app/base-http.service.ts

 import { Injectable } from '@angular/core';
-import { Observable } from 'rxjs/Observable';
 import { of } from 'rxjs/observable/of';
+import { Observable } from 'rxjs/Observable';
 
 @Injectable()
-export class ErrorHandlingService {
+export class BaseHttpService {
 
   constructor() {
   }

src/app/comment.service.ts

@@ -3,14 +3,14 @@ import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { Observable } from 'rxjs/Observable';
 import { Comment } from './comment';
 import { catchError, tap } from 'rxjs/operators';
-import { ErrorHandlingService } from './error-handling.service';
+import { BaseHttpService } from './base-http.service';
 
 const httpOptions = {
   headers: new HttpHeaders({ 'Content-Type': 'application/json' })
 };
 
 @Injectable()
-export class CommentService extends ErrorHandlingService {
+export class CommentService extends BaseHttpService {
   private commentsUrl = 'api/comments';
 
   constructor( private http: HttpClient ) {

src/app/content-answer.service.ts

@@ -3,13 +3,13 @@ import { AnswerText } from './answer-text';
 import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { Observable } from 'rxjs/Observable';
 import { catchError, tap } from 'rxjs/operators';
-import { ErrorHandlingService } from './error-handling.service';
+import { BaseHttpService } from './base-http.service';
 const httpOptions = {
   headers: new HttpHeaders({ 'Content-Type': 'application/json' })
 };
 
 @Injectable()
-export class ContentAnswerService extends ErrorHandlingService {
+export class ContentAnswerService extends BaseHttpService {
   private textAnswerUrl = 'api/textAnswers';
   private choiceAnswerUrl = 'api/choiceAnswers';
 

src/app/content.service.ts

@@ -3,13 +3,13 @@ import { Content } from './content';
 import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { Observable } from 'rxjs/Observable';
 import { catchError, tap } from 'rxjs/operators';
-import { ErrorHandlingService } from './error-handling.service';
+import { BaseHttpService } from './base-http.service';
 const httpOptions = {
   headers: new HttpHeaders({ 'Content-Type': 'application/json' })
 };
 
 @Injectable()
-export class ContentService extends ErrorHandlingService {
+export class ContentService extends BaseHttpService {
   private contentUrl = 'api/contents';
 
   constructor(private http: HttpClient) {

src/app/room.service.ts

@@ -3,15 +3,15 @@ import { Room } from './room';
 import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { Observable } from 'rxjs/Observable';
 import { catchError, tap } from 'rxjs/operators';
-import { ErrorHandlingService } from './error-handling.service';
 import { AuthenticationService } from './authentication.service';
+import { BaseHttpService } from './base-http.service';
 
 const httpOptions = {
   headers: new HttpHeaders({})
 };
 
 @Injectable()
-export class RoomService extends ErrorHandlingService {
+export class RoomService extends BaseHttpService {
   private apiUrl = {
     base: 'https://arsnova-staging.mni.thm.de/api',
     rooms: '/room',