[model] association between country and states and refactor method to find states by iso
[migration] change numcode with iso code
[spec/models] refactor to use iso instead of numcode
[seed] change states seed to use iso instead of numcode
[migration] remove unnecessery migration for states
[specs/model] add few specs for attr_accessible attributes
Merge pull request #174 from Genshin/refactor_state_country_assoc

Refactor state country assoc
Merge remote-tracking branch 'upstream/master' into develop
Merge remote-tracking branch 'tapalilov/kagetsukidevelop' into develop
small fixes + added apng
importer mostly working
Merge pull request #176 from Kagetsuki/develop

Roster Importer basically working
SS WIP
[gem] Update slim to 2.0.0
[gem] Comment rspec-sidekiq in gaku_engine_dependencies
Clean migrations
Clean address stuff
[views] Move _address_fields and _address_form_fields from shared to addresses
Merge remote-tracking branch 'upstream/master' into develop
updating sample