Add i18n for when room couldn't be found

src/app/components/creator/room-creator-page/room-creator-page.component.html

@@ -64,7 +64,7 @@
       <app-content-groups *ngIf="room && room.contentGroups" [contentGroups]="room.contentGroups"></app-content-groups>
 -->
     </mat-card>
-    <div *ngIf="!isLoading && !room">Error: room could not be found!</div>
+    <div *ngIf="!isLoading && !room">{{ 'room-page.room-not-found' | translate }}</div>
   </div>
 </div>
 

src/assets/i18n/creator/de.json

@@ -28,7 +28,8 @@
     "delete-all-comments": "Alle Kommentare löschen",
     "really-delete-comments": "Wollen Sie wirklich alle Kommentare dieser Session löschen?",
     "comments-deleted": "Alle Kommentare wurden gelöscht.",
-    "export-comments": "Kommentare exportieren"
+    "export-comments": "Kommentare exportieren",
+    "room-not-found": "Session wurde nicht gefunden :("
   },
   "content": {
     "content": "Frage",

src/assets/i18n/creator/en.json

@@ -28,7 +28,8 @@
     "delete-all-comments": "Delete all comments",
     "really-delete-comments": "Do you really want to delete all comments of this session?",
     "comments-deleted": "All comments have been deleted.",
-    "export-comments": "Export comments"
+    "export-comments": "Export comments",
+    "room-not-found": "Session not found :("
   },
   "content": {
     "content": "Content",