Bug 14990: Format the date template-side for moremember

Bug 14990: Format the date template-side for moremember

Test plan:
print slip and show the member detail page, the 3 dates date of birth,
date enrolled and date of expiry should be displayed correctly.

Followed test pan, works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 6506ddd1e859c3afbb9519d6a956495c06d628ce)
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Conflicts:
	members/moremember.pl