Deletes now return 204 instead of 404 (better rest compatability)

ref #13

src/controllers/UserController.ts

@@ -6,6 +6,7 @@ import { UserIdsNotMatchingError, UserNotFoundError } from '../errors/UserErrors
 import { UserGroupNotFoundError } from '../errors/UserGroupErrors';
 import { CreateUser } from '../models/actions/CreateUser';
 import { User } from '../models/entities/User';
+import { ResponseEmpty } from '../models/responses/ResponseEmpty';
 
 
 @JsonController('/users')
@@ -72,11 +73,12 @@ export class UserController {
 
 	@Delete('/:id')
 	@ResponseSchema(User)
-	@ResponseSchema(UserNotFoundError, { statusCode: 404 })
+	@ResponseSchema(ResponseEmpty, { statusCode: 204 })
+	@OnUndefined(204)
 	@OpenAPI({ description: 'Delete a specified runner (if it exists).' })
 	async remove(@EntityFromParam('id') user: User) {
 		if (!user) {
-			throw new UserNotFoundError();
+			return null;
 		}
 
 		await this.userRepository.delete(user);