Adds a CRUD datastream equivalent to the current NEU one, implements a fairly easy interface for working with it.
Updated crud datastream to lack foxml wrapper
Fixed crud datastream inclusion in the generic file model.  Crud datastream now correctly checks for type 'managed group' on permissions instead of 'group'.
Changes removed from neu_sufia, in the hopes that they can be placed safely inside our application.
Pushing up files_controller_behavior and batch_update_job changes until I figure out how to move those changes into our app
Undo change to files_controller_behavior.rb.  Method is now overriden in the generic_files_controller implemented by our own application.
Removed some puts used for debugging from update_file
Removing northeastern_dublin_core_datastream from the gem, placing it inside the DRS Sufia application.
Merge pull request #6 from nu-lts/feature/add_crud_datastream

Feature/add crud datastream