Git commits in Moodle 3.4.6 by Fotis Skandalis

commit 21f3395f7a24d3132ed9ef548b97ae2fc36f281d
Author: Fotis Skandalis <fotskot@gmail.com>
Date:   Mon, 10 Sep 2018 21:57:56 +0800
Tag:    v3.4.6

MDL-62714 theme_boost: Course visibility in navigation bar