Git commits in Moodle 3.9.0 by Felice Candilio

commit 4a4a73467c766baf3cb12fb7933aaefd204c80ce
Author: Felice Candilio <felicemcc@gmail.com>
Date:   Fri, 29 Nov 2019 20:26:28 +0800
Tag:    v3.9.0-beta

MDL-67410 Enrolments: Casting the perpage parameter to INT