fdo#39468 Translate German Comments - sc/source/filter/{lotus,rtf}

Change-Id: Ib5f1865cfd5d62f45919af8119d4ab691811225b
Reviewed-on: https://gerrit.libreoffice.org/12021
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>