Bug 16459: Add patron to a patron card requires catalogue permission

Bug 16459: Add patron to a patron card requires catalogue permission

Currently, serials => 'routing' is required, which does not make any
sense.
It's a copy/paste error when this file has been created (you can blame
me).

Note that I am not sure catalogue is the correct permission, but it's
the one used almost everywhere in this module

Test plan:
Confirm that catalogue is enough to search for patrons to add to a
patron card.

Signed-off-by: Srdjan <srdjan@catalyst.net.nz>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 3bb51d038639c7b197022a2c7c6ae864c834060f)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>