Git commits in Moodle 3.8.x by Thong Bui

commit a8e70bad235b2a3811ce6f8f88c01eedf6432e97
Author: Thong Bui <Thong.BuiVoQuoc@nashtechglobal.com>
Date:   Fri, 21 Aug 2020 12:57:55 +0800
Tag:    v3.8.5

MDL-69466 Autocomplete widget: Improve keyboard accessibility