Git commits in Moodle 3.1.1 by Mark Nelson

commit 20ede33d6134a53c3d87bf58af1f47fb4fe9a8fd
Author: Mark Nelson <markn@moodle.com>
Date:   Mon, 27 Jun 2016 13:24:56 +0800
Tag:    v3.1.1

MDL-55027 enrol_lti: avoid invalid image URL causing an exception

commit 3574cae7ffde91db0aff0a502d2f02ac0cd1cdfc
Author: Mark Nelson <markn@moodle.com>
Date:   Mon, 30 May 2016 13:28:09 +0800
Tag:    v3.1.1

MDL-54763 tool_lp: fixed typo in HTML tag