Bug 14181: MARC21 773 -- Display when ind1 = 0 or blank

Bug 14181: MARC21 773 -- Display when ind1 = 0 or blank

Display 773 in opac and staff details when ind1 !=1

Test plan
=========

1/ Add a new record which uses the 773 field to an instance running
   master code. (the selected MARC framework should have the 773's
   relevant sub-fields enabled and visible on staff client, opac and
   the editor).
2/ Set ind1 as '0' (zero). The note should be displayed both on OPAC
   as well as the staff client.
3/ Reset ind1 with a non-zero value or leave it blank. The display
   note should no longer be visible from either client or opac.
4/ Apply the patch.
5/ Repeat step #1 and #2. The note is displayed on staff and opac.
6/ Repeat step #3. The display note should be visible on both staff
   and opac.
7/ run koha-qa.pl -c 1 -v 2

Note : For #1 above, the following LoC record was used:
       http://www.loc.gov/marc/bibliographic/examples.html#monographic

       The patch applied cleanly and performed as expected.

       The koha-qa.pl gave OK as results.

Signed-off-by: Indranil Das Gupta  <indradg@gmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>