fdo#39468 Translate German comments (sc/source/ui/pagedlg/tptable.cxx)

Also remove some ASCII art.

Change-Id: I8d440a05626c4db3ff63108a7e92ba54615ea24b
Reviewed-on: https://gerrit.libreoffice.org/7712
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>