MD_DDE_LINKEDIT conversion to .ui

Change-Id: Id058400bad5a8b100ef5a07060ea1c5013c6e6d6
Reviewed-on: https://gerrit.libreoffice.org/10146
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>