Refactor content's id to contentId (more unique)

src/app/content-creation/content-creation.component.ts

@@ -45,7 +45,7 @@ export class ContentCreationComponent implements OnInit {
     this.contentService.addContent({ subject: subject, body: body, roomId: this.roomId } as Content)
       .subscribe(content => {
         this.notification.show(`Content '${content.subject}' successfully created.`);
-        this.router.navigate([`/creator/room/${content.roomId}/${content.id}`]);
+        this.router.navigate([`/creator/room/${content.roomId}/${content.contentId}`]);
         this.dialogRef.close();
       });
   }

src/app/content-detail/content-detail.component.html

@@ -5,7 +5,7 @@
         <mat-card-title>
           <h3 class="subheading-2">{{content.subject}}</h3>
         </mat-card-title>
-        <mat-card-subtitle>ID: {{ content.id }}
+        <mat-card-subtitle>ID: {{ content.contentId }}
           <br> Round: {{ content.round }}</mat-card-subtitle>
       </mat-card-header>
       <mat-divider></mat-divider>
@@ -21,7 +21,7 @@
       <mat-divider></mat-divider>
       <!-- answes list here -->
       <mat-card-actions>
-        <button mat-button color="primary" matTooltip="Create new content" routerLink="/creator/room/{{content.id}}/content-creation">
+        <button mat-button color="primary" matTooltip="Create new content" routerLink="/creator/room/{{content.contentId}}/content-creation">
           Create answer
         </button>
         <button mat-button color="warn" matTooltip="Delete selected answer">

src/app/content-list/content-list.component.html

 <mat-list>
   <mat-list-item *ngFor="let content of contents">
-    <button mat-button routerLink="{{content.id}}">
-      Content {{content.id}}: {{content.subject}}
+    <button mat-button routerLink="{{content.contentId}}">
+      Content {{content.contentId}}: {{content.subject}}
     </button>
   </mat-list-item>
 </mat-list>

src/app/content.ts

 import { ContentType } from './content-type';
 
 export class Content {
-  id: string;
+  contentId: string;
   revision: string;
   roomId: string;
   subject: string;