Re-add missing import

server/users/models.py

@@ -1,7 +1,7 @@
 import random
 import re
 import string
-from datetime import date
+from datetime import date, datetime
 
 from django.contrib.auth import get_user_model
 from django.contrib.auth.models import AbstractUser, Permission

server/users/tests/test_login.py

@@ -1,14 +1,3 @@
-# -*- coding: utf-8 -*-
-#
-# ITerativ GmbH
-# http://www.iterativ.ch/
-#
-# Copyright (c) 2019 ITerativ GmbH. All rights reserved.
-#
-# Created on 2019-10-02
-# @author: chrigu <christian.cueni@iterativ.ch>
-import json
-import os
 from datetime import timedelta
 from unittest.mock import patch