fixed inconsistency in accordance with FACES-1521

1. wrote a test case.
2. change the backing model beans.
3. deployed the wars to liferay-portal-6.1.1
4. hand checked that the constructor was initializing the date of birth with Calendar
5. ran automated tests to verify that nothing broke in any of the job app demos
6. pushed to origin.
7. Here I am on github :-)

In Him,
Vernon