Bug 14723: Make delivery notes translatable

Bug 14723: Make delivery notes translatable

Delivery notes weren't translatable. This patch adds
them in notices.tt. If note is Mail::Sendmail error generic
'Error occured while sending email' is shown.

Also fixes MySQLisms and adds AFTER to atomicupdate file.

To test prove t/db_dependent/Letters.t

Sponsored-by: Koha-Suomi Oy
Signed-off-by: Stina Hallin <stina.hallin@ub.lu.se>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>