TRUNK-4261: Error while submitting empty form in the page: "openmrs/admin/concepts/conceptReferenceTerm.form"

commit 3cb0f3c3a498a2794d17733bcb695f36454af47e
Author: Julius Duic <jpduic1@gmail.com>
Date:   Wed Jul 23 15:00:55 2014 -0400

    Display multiple form errors when validating

commit 6037cf3250c9016c46bb2214c6269a025fab024a
Author: Marvin Yan <marvin.yan@outlook.com>
Date:   Wed Jul 23 14:06:51 2014 -0400

    Add check for null ConceptSource
TRUNK-4212: add more logging to debug saveTask_shouldSaveTaskToTheDatabase
Merge pull request #998 from anotherdave/TRUNK-4212-4

TRUNK-4212: more logging to debug saveTask_shouldSaveTaskToTheDatabase
Merge pull request #993 from marvinyan/trunk-4261

TRUNK-4261: Error while submitting empty form in the page: "openmrs/admin/concepts/conceptReferenceTerm.form"
TRUNK-4208: Removed gender as a requirement during PersonValidation, added it instead to PatientValidation.

- Moved unit tests from PersonValidatorTest to PatientValidatorTest to reflect this new behaviour.

- Birthdate is already *not* a requirement for Persons.

- Added test for PersonValidator to check that it's not validating gender requirement.

TRUNK-4208: Refactored PersonValidator. Extracted birth date validation into it's own method.