Bug 17648: ACCTDETAILS notice does not show in notices.pl

Bug 17648: ACCTDETAILS notice does not show in notices.pl

The ACCTDETAILS notice apparently bypasses message_queue; notices are sent directly to the linux mail queue.

Test Plan:
1) Apply this patch
2) Create a new patron with an email address
3) Note the patron's ACCTDETAILS notice shows in the patron's messages

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>