My proxy (nginx public port 80) to django (gunicorn wsgi localhost port 8000) strips off the path to the application \"/app\" so requests for http://server/app/hello
http://server/app/hello
See documentation for FORCE_SCRIPT_NAME:
https://docs.djangoproject.com/en/dev/ref/settings/#force-script-name
Set that to be '/app' instead of default of None.