Added proquest normalization job and unit tests.  Added a datastream for storing the original metadata datastream from a deposit and relations for tracking the datastream and its source.  DateTimeUtil exposing its formatters and an additional method for getting back a DateTime from a UTC date string.
Created unit test for MakeFOXML. Adding implicit simple and preserved content models when appropriate.  Allowing for arbitrary datastreams to be added to objects, with DATA_FILE being added if the datastream name is not specified.  Relative paths for local file references generated in foxml.  MakeFOXML unit test for an ingest originating from a Proquest deposit.  Added mimetype to proquest DATA.xml datastream
Wired up proquest normalization job.  Created helper class for metadata profiles
Merge pull request #120 from UNC-Libraries/proquest-package

Proquest normalization job