WIP on new pydotorg.

This is certainly not working yet, but I need some help/review on a few things:

- [x] Get the application resource to use python3
- [x] Figure out how to do private repos
- [x] Disable settings.py generation (and most other stuff too)
- [x] Make sure my chef-fu is OK.
- [x] Get sass up and running (need bundler + gemfile)
- [x] Make collectstatic work
- [x] make migration work