! Fields that are regex-validated can't be left empty as per http://www.simplemachines.org/community/index.php?topic=499992.0 (thanks @emanuele45 for the fix)

Signed-off-by: Peter Spicer <sleeping@myperch.org>
Merge pull request #991 from Arantor/release-2.1

! Fields that are regex-validated can't be left empty as per http://www....