Shim for db tests

Add a default for postgres if can't find db in config. And it can't find the db in the config, as it can't find the config. Haven't figured out how to properly link it from the main project.
Move Holidays to simpler
Move Street Sweeping to simpler
Move Schedules to use simpler

Remove all trace of repositories
Add travis db connection
Comment out db tests

Currently can't figure out the proper way to get travis to read the db env var, which is only the first step on getting these tests to run properly. Created Issue #27
Dispose of db connection in status.
Merge pull request #26 from codeforamerica/refactor-schedules-to-use-simpler

Refactor schedules to use simpler