nouns are written Upper Case only in German
also Cancel button looks odd as secondary

Change-Id: Id1b051cbb86ab69ea88c7b1da2cda3eb19f063de
Reviewed-on: https://gerrit.libreoffice.org/31971Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>
Tested-by: Katarina Behrens <Katarina.Behrens@cib.de>