Bug 18403: Add new method Koha::Patron->can_see_patrons_from
Technical note:
Sometimes we do not have the patron object, for instance for the patron modifications
we will need to know if the logged in user can modify patron's from a given library.
This new subroutine 'can_see_patrons_from' will then be useful
Signed-off-by: Signed-off-by: Jon McGowan <jon.mcgowan@ptfs-europe.com> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>