Make it obvious which parts are translatable to avoid overtranslation

Change-Id: Ic2772f6d4c394189b6fa089906985a7fdae75b26
Reviewed-on: https://gerrit.libreoffice.org/28945Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>