update ruby version in travis conf too
upgrade gems in gemfile
fixed requires
make routes rails4 compliant
change mongoid config style
update carrier_wave_backgrounder initializer
fix resque scheduler require
remove attr_protected from mongoid model
remove obsolete sprockets helpers
upgrade capybara and remove letter opener for now
change regex syntax
remove obsolete hamlbars setting
fix mongoid scopes and indexes
upgrade fabrication
Mongoid.master doesn't exists anymore
upgrade tire
include sprockets rails helpers
fix whitelist issue
use a rails 4 compatible fork of rocket_tag
fix mongoid and pretty_print conflict