ndlib/sipity — pull request #25 by jeremyf (2014-12-12 14:15:11+00:00)
Title: Switching DoiCreationRequestJob to use header_id

Given that there is a database constraint on the DoiCreationRequest,
the repository/job interaction is easier to handle if I am passing the
header_id instead of the doi_creation_request_id.

I am also able to remove some object persistence.