Merge branch 'worker_fix' into 'dev'

no threading

See merge request spatial/postamates!89

deploy/django.yml

@@ -19,7 +19,7 @@ spec:
       containers:
       - name: django
         image: DEPLOY_IMAGE_TAG
-        command: ["sh", "-c", "python manage.py migrate && python manage.py runserver 0.0.0.0:${DJANGO_PORT}"]
+        command: ["sh", "-c", "python manage.py migrate && python manage.py runserver 0.0.0.0:${DJANGO_PORT} --nothreading"]
         ports:
           - containerPort: 8000
             name: django-port