Git commits in Moodle 3.9.7 by Alex Rowe

commit c9d3c97e740f20277bb6b2454cf2630abf21239c
Author: Alex Rowe <arowe@studygroup.com>
Date:   Tue, 09 Feb 2021 09:25:46 +0800
Tag:    v3.9.7

MDL-70049 assign: count_submissions_need_grading call when can't grade