Updated environments and Rails.
Removed attr_accessible stuff.
Added configurable secret key to Devise.
Added new secret key base.
Removed some options that no longer exist in Rails 4.
Defined JS Compressor.
Fixed deprecation warnings regarding the new :multiple option in AF and with how nil pids are dealt with.
Locked Hydra-Derivatives down to stop the dependence on FITS existing.
Merge pull request #79 from OregonDigital/feature/Rails4

Upgrade to Rails 4