Git commits in Moodle 3.8.0 by Segun Babalola

commit 85d142f56ad11b2e1758b309f0b9b58de654f398
Author: Segun Babalola <cceabab@ad.ucl.ac.uk>
Date:   Wed, 04 Sep 2019 19:10:53 +0800
Tag:    v3.8.0-beta

MDL-66391 core_course: Fix to send correct Ajax parameter for userid