Fixing the issue with String date from EXCEL

Signed-off-by: Dileep Mishra <Dileep.Mishra@kony.com>
Merge pull request #1 from mishradileep-yahoo/fix_for_student_dob

fix_for_student_dob Merge this
Revert "fix_for_student_dob"
Merge pull request #2 from mishradileep-yahoo/revert-1-fix_for_student_dob

revert-1-fix_for_student_dob