OZP-807: Useful Backend Legacy service for translating OWF8 objects for OWF7 javascript.

1. Added tests for translating persons and groups from OWF 8 to OWF 7.
2. Updated the person translation method.
OZP-850 - initial impl of legacy prefs
OZP-850 - initial impl of legacy prefs
OZP-850 - fixing broken tests that failed to due timezone
OZP-807: Useful Backend Legacy service for translating OWF8 objects for OWF7 javascript.

1. Added test for stack translation from OWF 8 to 7.