Refactored a bit so that app would run on AWS

Create instance dir if it doesn't already exist
Renamed run.py so that AWS's WSGI will work
Use '/tmp' if there isn't a TMPDIR env var set
Renamed .ebextensionS. With an S. For Stupid.
Import app as application. Don't download GTFS if it's already there.
moving run() into __main__
Fixed conflicts