fdo#39468 Translate German Comments - sc/source/filter/excel/

Change-Id: I2a5104c6da0cf9843c42b1687aec6eb9c459c3d4
Reviewed-on: https://gerrit.libreoffice.org/11735
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>