fdo#39468 Translate German comments

Also remove ASCII art and some typos.

Change-Id: I76d05209dd674598c787fe6fb486f0e9eadb2629
Reviewed-on: https://gerrit.libreoffice.org/8188
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>