Set a generic title if not present in submission

Also modify attribute lookup to correctly handle both normal JSON Arrays
and Rails' "indexed hash" objects.
Remove validation on notices.title
Update view and specs

Just show the title, a generated title will include type. Update
submission specs to not rely on factory title. Update type specs to use
generated title to ensure the correct type was created.
Clean up submission specs
Fix association validation bug

Most of our specs were passing because the validation on Title would
prevent us from getting to a point where this bug mattered.

Once I fixed the validation on Entities, I created a similar spec for
Works, found that also failing and fixed things there the same way.