By moving accessibility relations to the related .ui file,
and deleting calls to SetAccessibleName where possible.

Change-Id: Ic2b309d54d3579158bdf33468f0895ca2b2a393e
Reviewed-on: https://gerrit.libreoffice.org/25956Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>