[LyX/2.3.x] remerge cs.po

[Pavel Sanda]

commit 3dece9b25d2112cca5b9ac8063e9866982c66987
Author: Pavel Sanda <sanda at lyx.org>
Date:   Wed Sep 16 12:00:09 2020 +0200

    remerge cs.po

 po/cs.po | 3127 ++++++++++++++++++++++++++++++++------------------------------
 1 files changed, 1602 insertions(+), 1525 deletions(-)