Bug 19292: Add MARC code column on libraries list

Bug 19292: Add MARC code column on libraries list

Test plan:
0) Apply the patch
1) Go to admin/branches.pl
2) In the list of libraries, you should see new column "MARC Organization Code"
3) Insert some codes to some libraries
4) Confirm they are shown in new column

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Fixed capitalization.
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>