Git commits in Moodle 3.2.x by Danny Jung

commit 2dd87cb37a3448df877737eff0406e705145fcdc
Author: Danny Jung <dannyjung90@gmail.com>
Date:   Sat, 27 May 2017 03:02:58 +0800
Tag:    v3.2.4

MDL-59073 Workshop: Prevent submission without content or file