since illustration index links were initially implemented by

commit 2c10d784
Date:   Tue Jul 16 15:49:44 2013 +0200

    fdo#39904, n#825976: implement hyperlinks for Illustrations index

    (cherry picked from commit 8bb2c7f1)

Change-Id: I679fb9c40cd5dc55a5d546ef7c533faf9de2e483
Reviewed-on: https://gerrit.libreoffice.org/45967Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>
(cherry picked from commit 523da0bf)
Reviewed-on: https://gerrit.libreoffice.org/46108Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>