refactor user_match
refactor user_match even more
remove crap
refactor user, users_controller, specs
refactor group helper, specs
refactor group helper, specs, even more
travis build failing, re-arranged things
revert last crapy change
switch test env to use postgres, able to reproduce travis build failing, and fix it
fix bug on user_match guessed results, add spec, refactor
add create db command for travis ci