Properly namespaces out nu_file in the Drs subdirectory.
Eliminate annoying namespacing on content_type files, change configuration to read them regardless.
Slightly changed the autoload include, seems to have gotten things working.
Namespaced out the call to Drs::Nufile.create_master_content_object
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.