Initial work.  Seems to get file upload to split valid files into their own object types.
Merge branch 'develop' into feature/composite_core_objects
Basic controller stub
Merge branch 'develop' into feature/shared_views
Big merge.
Properly namespaces out nu_file in the Drs subdirectory.
Eliminate annoying namespacing on content_type files, change configuration to read them regardless.
Moving files to the shared location, and replacing @nu_collection with @set
Refactoring collections controller
Slightly changed the autoload include, seems to have gotten things working.
Namespaced out the call to Drs::Nufile.create_master_content_object
Changing params from nu_collection, to set
Adds properties and characterization datastreams to all content bearing objects.  Also adds code for running the characterization job around save.
NuFiles now attach themselves to their core record via RELS EXT.
Wrote a custom .content_objects method to return every content bearing object associated with a core file instance.
Adds creator setter to the Dublin Core Datastream, refactors DC spec to test this and removes some silly tests.
Update simple setters for date/keywords to also work over the DC object.
Adds a kludgy way of assigning the type agnostic creator information required in the DC datastream.
Not even remotely done yet refactoring, but better to commit progress now...
Update nucollections to correctly set their own DC record on update and edit