fdo#39468 Translate German Comments - vcl/source/window/dlgctrl.cxx

Change-Id: Ibfae3f4d94f675db0275e83f8d5f074269713cad
Reviewed-on: https://gerrit.libreoffice.org/8427
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>