Translate some German comments to English, and remove some ASCII art.

Additional changes according to Chris Sherlock's wishes (removing
comment decorations, removing no-purpose comments)

Change-Id: I5346010d67ed5d1b2b2ad0df91ac472dde905683
Reviewed-on: https://gerrit.libreoffice.org/7504
Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>