Improving registry models
Meta class is first that methods by Django convention
Better docstring
Adding header and body unit tests.
Handling registry list daterange reply
Completing Broadcast Item Creation
Completing Broadcast Registry Sync by Date Range
Completing Handle Registry Item Creation Broadcast
Removing some unneeded imports
Merge branch 'develop' of https://github.com/APTrust/APTrustDPN into develop
Daterange syn forms implemented.