Git commits in Moodle 3.3.1 by Danny Jung

commit 67c112bf9c949803ccce950187ddfdbc21549378
Author: Danny Jung <dannyjung90@gmail.com>
Date:   Sat, 27 May 2017 03:02:58 +0800
Tag:    v3.3.1

MDL-59073 Workshop: Prevent submission without content or file