移除time_zone,修复problem越权

utils/api/tests.py

@@ -11,7 +11,7 @@ class APITestCase(TestCase):
     def create_user(self, username, password, admin_type=AdminType.REGULAR_USER, login=True, problem_permission=ProblemPermission.NONE):
         user = User.objects.create(username=username, admin_type=admin_type, problem_permission=problem_permission)
         user.set_password(password)
-        UserProfile.objects.create(user=user, time_zone="Asia/Shanghai")
+        UserProfile.objects.create(user=user)
         user.save()
         if login:
             self.client.login(username=username, password=password)

utils/management/commands/initadmin.py

@@ -33,7 +33,7 @@ class Command(BaseCommand):
             rand_password = "rootroot"
             user.set_password(rand_password)
             user.save()
-            UserProfile.objects.create(user=user, time_zone="Asia/Shanghai")
+            UserProfile.objects.create(user=user)
             self.stdout.write(self.style.SUCCESS("Successfully created super admin user.\n"
                                                  "Username: root\nPassword: %s\n"
                                                  "Remember to change password and turn on two factors auth "