Bug 11174: fix OPAC search links built from authority 5xx fields

Bug 11174: fix OPAC search links built from authority 5xx fields

In the templates opac-authoritiessearchresultlist of prog and
bootstrap the incorrect parameter 'valuec' is changed to 'value'

To test:

1) Insert an authority record with a 5xx field  (on MARC21 or UNIMARC)
2) Index the record
3) Search for the record in using OPAC authorities search.
4) Click one of the "see also" links built from the 5xx field, the link
   doesn't work
5) Apply the patch
6) Close the browser
7) Open the opac and select the english interface
8) Redo the search
9) Now the link works
10) To use the patch in others languages you need to regenerate the
    templates.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Tested with bootstrap.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Following commit remove the use to valuec:
 commit 31f41e2c1db9d8dca82e0249050acb8f906c8164
    Bug 8206: Specify index in OPAC authority search

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 09fcd6980301bae3daad68f8cc27a2d5e7d488e4)
Signed-off-by: Fridolin SOMERS <fridolin.somers@biblibre.com>