Django App skeleton

Based off of https://github.com/dereknutile/django-1.7-template, which is itself based off of https://github.com/twoscoops/django-twoscoops-project

Not fully working yet because we need some devops/infrastructure work to setup dependencies and connect to the services VM
Based on the definitions in the Filesystem Hierarchy Standard (FHS), `/opt` makes more sense than `/usr/local`. `/srv` makes sense too, but in practice, I don't see very many people using it.

It's more about putting our applications in a place that isn't populated with a bunch of other files than anything else.