Upgrade gunicorn.
Fix issue with missing CSRF header for Persona login.
Add WhiteNoise for serving static media.
Install django-pipeline.
Move static assets into scrum app.
Add server settings to repo.
Add supervisord start file.
Add celery start script.
Fix some config issues.

Mostly that the 'bootstrap' app was before 'scrum'
in INSTALLED_APPS, thus using 'bootstrap' app's version
of the media, and breaking things.
Add a static helper function to use hashed files.
Fix gunicorn workers setting. Add NR ping to deploy scripts.
Clean up the base template a bit.