Bug 36619: Restore 'Columns' visibility on the patron search when placing a hold

Bug 36619: Restore 'Columns' visibility on the patron search when placing a hold

Test plan:
Go to /cgi-bin/koha/reserve/request.pl?biblionumber=117
Search for "d"
Notice that with this patch applied the "Columns" button is back and
that the "Configure" is working correctly

Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>