Git commits in Moodle 3.3.0 by Loc Nguyen

commit 288ac7b9d74895e6b6d60830fe5d29df2c6ef740
Author: Loc Nguyen <loc.nguyendinh@harveynash.vn>
Date:   Tue, 10 Jan 2017 15:22:11 +0800
Tag:    v3.3.0-beta

MDL-57586 workshop: Change workshop variable protected to public