Bug 30230: Add new 'list_borrowers' permission

Bug 30230: Add new 'list_borrowers' permission

When a patron search is performed only a user with edit_borrowers
permission can search by name. Search can works only with cardnumber but
it makes searching less intuitive I think.

So, as mentioned in the discussion, I've added a new 'list_borrowers' permission,
completely independent of 'edit_borrowers', so that I can search for a member via the interface
and get the results. In addition to the permission to perform check in and checkouts, this no longer poses an obstacle to simple use.

Test plan:

1) Check with a user without 'edit_borrowers' permission that the patron search can only be performed with cardnumber
2) Apply this patch
3) Make the updatedatabase to add new 'list_borrowers' permissions
4) Set 'list_borrowers' permission on one user and see the difference

Signed-off-by: Andrew Fuerste-Henry <andrewfh@dubcolib.org>
Signed-off-by: Emmi Takkinen <emmi.takkinen@koha-suomi.fi>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: David Cook <dcook@prosentient.com.au>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit fc75a344b89198e7e12a534111132cb7f37baf18)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>