Git commits in Moodle 3.6.0 by David Knuplesch

commit a487a3edf2f20d75dfeb26f3c8516ed72f5f25d0
Author: David Knuplesch <david.knuplesch@uni-ulm.de>
Date:   Sun, 23 Sep 2018 04:54:20 +0800
Tag:    v3.6.0-beta

MDL-60710 course: setting to show/hide duplicate coursecontact