Merge pull request #33 from tihuan/chore/add_mbid_to_user

Add mbid to artists - minimize MB query in SearchesController#search
migrate test db
before upstream merge
Merge branch 'master' of https://github.com/fiddler-crabs-2014/encore
Add migration file to allow Hstore in databse
create setlist model and associated files
change service/setlist to service/setlistfm
implement new data saving structure