korgac: re-add 10 days check
Summary: The previous commit was overzealous
Reviewers: winterz
Reviewed By: winterz
Subscribers: kde-pim
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D29677
(cherry picked from commit fabe8467cd6e11b1ae4084ad113b15ef5d122ac4)