Git commits in Moodle 3.2.9 by Brendan Cox

commit 765b3213b7117237b5c68b4365dc54768ab92da5
Author: Brendan Cox <brendan.cox@totaralearning.com>
Date:   Tue, 08 May 2018 16:50:49 +0800
Tag:    v3.2.9

MDL-62210 mod_assign: improved validation in portfolio caller class

commit 1aca561589b0facc8aadd66b5578f5aa1226eaff
Author: Brendan Cox <brendan.cox@totaralearning.com>
Date:   Fri, 27 Apr 2018 07:46:13 +0800
Tag:    v3.2.9

MDL-62232 mod_forum: Additional tests for portfolio file export