add gem 'pg' for production
add active_admin
add rails_12factor for heroku
add strong params to group and product
add hstore-multilang for localization
add utf8sanitizer for production
add activerecord-postgres-hstore
update hstore
add bootstrap, devise for admin
removed active admin
add localization for products
add localization for product groups
changed layout header
add helper method available locales
add automated testing
add simple_authentication_token