Git commits in Moodle 4.0.0 by Thach Le Huy

commit dc3aa743e42c1b6e2b584e869422e451ff0cff76
Author: Thach Le Huy <Thach.LeHuy@nashtechglobal.com>
Date:   Tue, 29 Jun 2021 22:09:39 +0800
Tag:    v4.0.0-beta

MDL-72033 User tours: step placement issues if screen too narrow

commit 1cf69802f03d03cbc165634cb966b29629c333c6
Author: Thach Le Huy <Thach.LeHuy@nashtechglobal.com>
Date:   Wed, 16 Jun 2021 14:49:41 +0800
Tag:    v4.0.0-beta

MDL-71537 User tours: Minor display errors on mobile

commit b3be2bbb67545816d2f667f42960c138c2247664
Author: Thach Le Huy <Thach.LeHuy@nashtechglobal.com>
Date:   Thu, 03 Jun 2021 08:29:27 +0800
Tag:    v4.0.0-beta

MDL-71814 Atto: File picker – file info panel focus issue