First go at getting django working on heroku…
Merge branch 'feature/73-heroku-django' of https://github.com/andylolz/server into features/73-heroku-django

Conflicts:
	requirements.txt
updated settings.py to use MONGOLAB_URI
moved json_util up one directory
added runtime.txt using python 2.7.4 for heroku
moved json_util again
added psycopg2 and repointed to postgresql
added heroku pgsql settings
added MONGO_DBNAME to heroku
got rid of the dj_database_url call
split the pgsql and mongo config for local vs heroku deployments
switched db config for travis
updated .travis.yml with the shortened oabutton paths