Git commits in Moodle 3.9.0 by Tom Dickman

commit 4399e4759a07d2f38e8519860dcf3eb337275643
Author: Tom Dickman <tomdickman@catalyst-au.net>
Date:   Thu, 31 Oct 2019 09:32:17 +0800
Tag:    v3.9.0-beta

MDL-45184 tool_licenses: Add custom licenses

commit 2228ca31a202053a35484320b4ee153d70a8ef0c
Author: Tom Dickman <tomdickman@catalyst-au.net>
Date:   Wed, 16 Oct 2019 08:03:15 +0800
Tag:    v3.9.0-beta

MDL-66911 core files: Add license help to file selector

commit 9d9e3a3da275837c4395c4c9735d693617c734b0
Author: Tom Dickman <tomdickman@catalyst-au.net>
Date:   Wed, 24 Jul 2019 05:48:49 +0800
Tag:    v3.9.0-beta

MDL-57635 tool_usertours: Restrict tours by user account details