Local testserver regularly dies with locale problem

[bhaettasch]

See stacktrace below -- why does django try to load an aserbaijani locale?!

Traceback (most recent call last):
  File "/mnt/d/repo/kifplan/manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 356, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 61, in execute
    super(Command, self).execute(*args, **options)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 100, in handle
    self.run(**options)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 109, in run
    autoreload.main(self.inner_run, None, options)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 341, in main
    reloader(wrapped_main_func, args, kwargs)
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 307, in python_reloader
    reloader_thread()
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 277, in reloader_thread
[28/Oct/2018 13:06:24] "GET /admin/oplan/roomavailability/ HTTP/1.1" 200 9291
    change = fn()
  File "/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 207, in code_changed
    stat = os.stat(filename)
FileNotFoundError: [Errno 2] No such file or directory: '/mnt/d/repo/kifplan/venv/lib/python3.6/site-packages/django/conf/locale/az/LC_MESSAGES/django.mo'