Rename ScholarsphereDepositor to FedoraArchiver
Make sure our vocabulary gets loaded
Use Worthwhile::GenericFile to store submission files
Describe the behavior that we expect for attached files

This is the beginning of describing the interface that we expect from
Carrierwave.
Rename filename to asset in file models

We also define traits based on file type for our
file factories.
Use factories to set files for fedora archiver spec