Merge pull request #2 from tituomin/master

Event and location imports work for matko. Some model changes.
Fix pep8 issues

Command used:
$ pep8 --exclude=migrations  --ignore=E501,E701 events
Add Travis CI support and create env settings files
Change testing db to postgres
Add ISO 8601 duration serializer
Creating template
clean
Merge remote-tracking branch 'openshift/master'
Add CD settings and upgrade hstore lib
Add JSON-LD improvements in serialization
Add better reversed URL support in @id. modify couple model fields

Additional:
- Many PEP8 fixes
- Some testing
Working venue filter for matko locations.
Add Swagger
Remove old GeoIP and add postgis support
Move common code to importer baseclass.
Helmet importer: a start.
Strip versions from requirements.txt
Start using PostGIS db backend
Update .gitignore
Fix Python v3 compatibility