gems: update
Merge branch 'master' of github.com:balticit/bcs31 into calc
Merge branch 'stage' of github.com:balticit/bcs31 into calc
gems: add enumerize
merge with upstream/stage
merge with upstream/stage :two:
Merge branch 'stage' of github.com:balticit/bcs31 into calc
Merge pull request #17 from Nesit/stage

Change domain
clean up
calc: models and specs
calc: add central cities to seeds
clean up
calc: add price of delivery page
calc: add pay in affiliate to form
calc: change zone relations to many-to-many
clean up
calc: add seed for bcs zones
Merge branch 'stage' of github.com:balticit/bcs31 into calc
Various fixes
fix sliders