Git commits in Moodle 3.8.0 by Sagar Ghimire

commit 36667548b5c6e8f8b1b401ad7cbc2076fe328cb0
Author: Sagar Ghimire <sagarghimire@catalyst-au.net>
Date:   Thu, 01 Aug 2019 07:52:12 +0800
Tag:    v3.8.0-beta

MDL-60916 core_course: Replace course search with global search

commit a57a585cd256cad917cf28003edeef75948fef26
Author: Sagar Ghimire <sagarghimire@catalyst-au.net>
Date:   Mon, 24 Jun 2019 09:29:47 +0800
Tag:    v3.8.0-beta

MDL-48610 tablelib: Always show alphabet filter in grader report