Bug 11223: Fix the ind1 semantics for 785 in the staff interface

Bug 11223: Fix the ind1 semantics for 785 in the staff interface

For 780 and 785 the field should not display when the first indicator
is 1. After checking the code, I found that 785 in staff was missing.
This patches fixes that one.

To test:
- Catalog a record with 785 and 780 fields with one 1st indicator set to
  0 and another to 1.
- Verify in staff and OPAC detail pages that only the fields with 0 display.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>