Adds full metadata editing for Collections (same DC fields as GenericFiles)  Fixes hydra-editor style partials in views/records.
refs gwu-libraries/gw-sufia#82
refs gwu-libraries/gw-sufia#25
Merge pull request #545 from projecthydra/moar_collection_metadata

Adds full metadata editing for Collections (same DC fields as GenericFiles)
Added list of collections this file belongs to, on file show page