plus some additional corrections / improvements.
I know, translators will hate me. :-)
In addition, fixed one typo reported by Steen Roennow.
Change-Id: I3ab7dda03d91783637f57349e93dffe4956b9d5d
Reviewed-on: https://gerrit.libreoffice.org/53457
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>