Fix add/remove admins

src/app/models/group.ts

@@ -47,7 +47,7 @@ export class Group {
   }
 
   public updateAdmins(admins: IUser[]) {
-    // this.admins = [];
+    this.admins = [];
     for (const admin of admins) {
       const user = new User();
       this.admins.push(user.assignFromResponse(admin));

src/app/services/group/group.service.ts

@@ -64,6 +64,7 @@ export class GroupService extends BaseService {
           name
           dueDate
           joined
+          deletable
         }
       }`, variables: {
         name: name,