message: Complete comments for notification api
diff: @@ -123,12 +123,32 @@ export class NotificationController {
  *
  * @apiParam {String} id User ID.
  *
  - * @apiSuccess {Notification[]} notifications Notifications.
  + * @apiSuccess {Notification[]} notifications List of notifications.
  *
  * @apiSuccessExample {json} Success-Response:
  - * {
  - * [todo]
  - * }
  + * [{
  + * "_id": "5ab2fbe464efe60006cef0b1",
  + * "updatedAt": "2018-03-22T00:42:12.577Z",
  + * "createdAt": "2018-03-22T00:42:12.577Z",
  + * "changedUnit": {...},
  + * "changedLecture": {...},
  + * "changedCourse": {...},
  + * "isOld": false,
  + * "text": "Course ProblemSolver has an updated text unit.",
  + * "user": {...},
  + * "__v": 0
  + * }, {
  + * "_id": "5ab2fc7b64efe60006cef0bb",
  + * "updatedAt": "2018-03-22T00:44:43.966Z",
  + * "createdAt": "2018-03-22T00:44:43.966Z",
  + * "changedUnit": {...},
  + * "changedLecture": {...},
  + * "changedCourse": {...},
  + * "isOld": false,
  + * "text": "Course katacourse has an updated unit.",
  + * "user": {...},
  + * "__v": 0
  + * }]
  */
  @Authorized(['student', 'teacher', 'admin'])
  @Get('/user/:id')
  @@ -155,11 +175,25 @@ export class NotificationController {
  * @apiParam {String} id Notification ID.
  * @apiParam {IUser} currentUser Currently logged in user.
  *
  - * @apiSuccess {Todo} x y.
  + * @apiSuccess {Object} deletion Object with deleted notification.
  *
  * @apiSuccessExample {json} Success-Response:
  * {
  - * todo
  + * "$__": {...},
  + * "isNew": false,
  + * "_doc": {
  + * "__v": 0,
  + * "user": {...},
  + * "text": "Course ProblemSolver has an updated text unit.",
  + * "isOld": false,
  + * "changedCourse": {...},
  + * "changedLecture": {...},
  + * "changedUnit": {...},
  + * "createdAt": "2018-03-22T00:42:12.577Z",
  + * "updatedAt": "2018-03-22T00:42:12.577Z",
  + * "_id": {...}
  + * },
  + * "$init": true
  * }
  *
  * @apiError NotFoundError Notification could not be found.
  