Fixed  issue of not validating out of date range(#191)
Fixing validation message of incorrect dates(#191)
Removed unreached  block(#191)

--Fails for non integers when parsing , so explicitly defining regex is
not required--
Removed unused variable(#191)
Merge pull request #192 from jembi/Validation_Issues_With_Donor_DOB_#191

Validation issues with donor dob #191