Git commits in Moodle 3.2.x by Eugene Venter

commit dbd8cadb5cb24652182a16d51a97644b2eb0b095
Author: Eugene Venter <eugene@catalyst.net.nz>
Date:   Tue, 01 Nov 2016 05:10:21 +0800
Tag:    v3.2.0-rc1

MDL-52216 mod_lesson: prevent invalid view modes