Git commits in Moodle 3.5.6 by Jan Dageförde

commit 22f5807e2241d6d066e959f13f2398ead4b93342
Author: Jan Dageförde <jan.dagefoerde@ercis.uni-muenster.de>
Date:   Fri, 08 Mar 2019 22:14:53 +0800
Tag:    v3.5.6

MDL-65022 wiki: declare the cancel button secondary