Bug 26679: Use index-term-genre for 655

Bug 26679: Use index-term-genre for 655

To test:
1 - have a bib with a 655 that is not linked to an authority
2 - confirm link on OPAC and intranet details uses subject index
3 - apply patch, restart, reload pages
4 - confirm links now use index-term-genre and give correct results

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 21ddbae73524d927116d37083a33febc0dfd7818)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit bb3ff613a7164f9f07910d1a06cd0e74fed4b5af)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>