Git commits in Moodle 3.9.x by David Watson

commit 8208453a14be296273d2d6c223e02588e237626f
Author: David Watson <david@evolutioncode.uk>
Date:   Mon, 11 Jan 2021 01:11:50 +0800
Tag:    v3.9.4

MDL-69431 course: validate section url param against maxsections