Added MODS display labels 

I replaced the old commented-out metadata display labels with labels from the MODS display gem (though they're still commented-out). Only a few are different from the gem's default values (abstract, alternative_title, author_creator, handle, matrix_number, and subject).
Merge pull request #407 from NEU-Libraries/feature/name_part

Feature/name part
Should show names on list for repdev, even if we're not done with mods display just yet