Git commits in Moodle 3.8.3 by Michael Hawkins

commit 535be631f87887ec8192a5c2a4222ffbfd57d85f
Author: Michael Hawkins <michaelh@moodle.com>
Date:   Thu, 27 Feb 2020 13:16:00 +0800
Tag:    v3.8.3

MDL-68061 gradereport_history: Restrict per page config value to int