Added PostgreSQL connect command to fabfile.
Removed secret key and sensitive database credentials.

- dev and prod environments will have separate local_settings.py files
with sensitive, environment-specific info
- these files NOT tracked in VCS
Ignore static files and local_settings from git repository.
Renamed old settings file for modular dev/prod configuration.
Added check in settings files to print console error if local_settings is missing.
Added checks for environment in manage.py and wsgi.py.
Merge pull request #6 from peterfschaadt/routing

Refactored dev/prod settings.