Git commits in Moodle 3.4.3 by Kathrin Osswald

commit 276350a9a6852cabce3723254c95dd6f723c7121
Author: Kathrin Osswald <kathrin.osswald@uni-ulm.de>
Date:   Wed, 25 Apr 2018 16:30:11 +0800
Tag:    v3.4.3

MDL-61411 theme Boost: Close navigation on all items (on small screens)