Issue #774: Expose contact information in the patient JSON export
Added separate serializer class for contact information.
Issue 774: Expose contact information in the patient JSON export.
Added support for handling group owners of patient record.
Issue 774: Expose contact information in the patient JSON export.
Minor naming and formatting-related fixes.
Merge pull request #802 from bvancea/issue774

Issue 774: Expose contact information in the patient JSON export.