Git commits in Moodle 3.4.4 by Leon Stringer

commit 17550776889f20a77d4131488445ee5695905d6c
Author: Leon Stringer <leon@priorsvle.com>
Date:   Wed, 23 May 2018 02:46:12 +0800
Tag:    v3.4.4

MDL-62316 OAuth 2: Only guess image if base URL set.

commit fc1b6699df72bc04f714c15307f9fb84e6302f2f
Author: Leon Stringer <leon@priorsvle.com>
Date:   Fri, 13 Apr 2018 00:59:41 +0800
Tag:    v3.4.4

MDL-61786 auth: Changed strings for Test Settings to lang strings