Allauth, Facebook connect, restructuring

- **Django all auth**
    - [ ] Login/signup
    - [ ] Forgot your password
    - [ ] Account page: update email, change password
    - [ ] Facebook connect
- **Restructuring**
    - [x] Explicit settings files with relative paths
    - [x] Settings in development.py should only be development, production.py only production
    - [ ] User profile?
    - [x] Add Django nose
    - [ ] Add basic tests for django nose
    - [x] Get config from environment variables!