admin: Better production config for FoodTruck, provide proper first site. * Use a `settings` object to configure Flask. * Accept an `app.cfg` file in the admin folder to configure Flask. * Get a proper first site name when the cookie isn't set yet.

sudo: false
language: python
python:
  - "3.4"
install:
  - "pip install -r requirements.txt"
  - "pip install -r dev-requirements.txt"
script: py.test