message: API: Use changed extractMongoId in User.ts forUser
diff: @@ -214,7 +214,7 @@ userSchema.methods.forTeacher = function (): IUserSubTeacher {
  userSchema.methods.forUser = function (otherUser: IUser): IUserSubSafe | IUserSubTeacher | IUser {
  const {userIsTeacher, userIsAdmin} = User.checkPrivileges(otherUser);
  - const isSelf = extractMongoId(this._id) === otherUser._id;
  + const isSelf = extractMongoId(this._id) === extractMongoId(otherUser._id);
  if (isSelf || userIsAdmin) {
  return this.toObject();
  } else if (userIsTeacher) {
  