findDonors method of DonorCommunicationsRepository Change due to mistake in  lastDonationFromDate , lastDonationToDate and clinicDate check with deferredUntil date.Update name 'donorDeferral'.Add findDonors_shouldNotReturnDonorsDeferredOnClinicDate , findDonors_shouldNotReturnCurrentlyDeferredDonors Test Case and userAuthentication method in DonorCommunicationsRepositoryTest #135 T10h:00