SIGNED-OFF Bug 7590 Cataloging authorities search result page is broken

SIGNED-OFF Bug 7590 Cataloging authorities search result page is broken

This bug occurs on UNIMARC DB with authorities linked together with TS/TG
relations. To reproduce it:

- Add a new biblio record
- On 610 field, click on the tag editor button to search an authority
- In the Authority search window, enter a large search
- On the result page, for authorities having relations with other terms, in the
  Get it! column, you get a mess of TS/TG relations and not more Choose link.

Signed-off-by: François Charbonnier <francois.charbonnier@biblibre.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>