Git commits in Moodle 3.3.x by Nicolas Dunand

commit 5e092e254044a20af04e163adf9d0f4d2759a169
Author: Nicolas Dunand <nico@kolya.ch>
Date:   Wed, 07 Feb 2018 01:37:18 +0800
Tag:    v3.3.5

MDL-61344 mod_assign: Show additional files when adding submission