Git commits in Moodle 3.8.1 by David Monllaó

commit 8ae7a4ad68e32715e14a06e8500ed7a4fa11da1a
Author: David Monllaó <davidm@moodle.com>
Date:   Tue, 26 Nov 2019 14:39:14 +0800
Tag:    v3.8.1

MDL-67304 analytics: Add missing png svg incorrect icon


commit 5bde4eb35e07d4e98c6a84648fb4a429207f1a82
Author: David Monllaó <davidm@moodle.com>
Date:   Tue, 12 Nov 2019 08:28:14 +0800
Tag:    v3.8.1

MDL-67217 unittest: usleep and windows don't get along well