[#79821886] Fixed issue with log in failure when congregation isn't assigned to a volunteer. Due to the Homepage Controller indirectly requiring access to the findCongregation(int) method.

HomepageController.showHomepage 
	-> VolunteerModelFactory.generateVolunteerModel
		-> PersonModelFactory.generateCongregationModel
			-> CongregationDao.findCongregation(congregationId)