Git commits in Moodle 3.9.x by Vitaly

commit 12d4c82f984dca01fd07383b524b91751772adb3
Author: Vitaly <potenkov@gmail.com>
Date:   Sat, 19 Sep 2020 02:45:26 +0800
Tag:    v3.9.4

MDL-56653 enrol_meta: a single DB query in edit_instance_validation


commit 141216f94c552d35c547c053ae4660e070418b42
Author: Vitaly <potenkov@gmail.com>
Date:   Wed, 16 Sep 2020 02:46:47 +0800
Tag:    v3.9.3

MDL-69342 core_user: fixed user picture updating