#219: use redis_store as Rails cache_store
#219: some refactoring
#219: removed unnecessary code
#219: removed unnecessary ability
#219: updated jbuilder gem
#219: updated ability.rb
#219: Ability#read_relations_for method
#219: rollback and update #read_relations_for
add some specs for group-member
fixed misprint
#219: rollback changes
Merge branch '219-use-caching' of abf.rosalinux.ru:abf/rosa-build into 219-use-caching
#219: updated #read_relations_for method
add indexes to relations
#219: hot fix
Merge branch 'master' into 219-use-caching
#219: Fixed: DEPRECATION WARNING of jbuilder
#221: updated ability.rb
#219: small refactoring of API::Issues controller, fixed ability.rb
#221: added specs for Platform API