fdo#39468 Translate German comments - sw/source/core/{unocore|text}

Change-Id: Ib68eb94b296b002a8cd4e73dd6fd72a4f9d2f7d3
Reviewed-on: https://gerrit.libreoffice.org/12058
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>