Git commits in Moodle 3.4.1 by Kathrin Osswald

commit 2ba2d0220221062ad12715861995011d6d5a518e
Author: Kathrin Osswald <kathrin.osswald@uni-ulm.de>
Date:   Wed, 20 Dec 2017 17:25:49 +0800
Tag:    v3.4.1

MDL-60363 conditional activities: Dim the icon also in student's view.