Git commits in Moodle 2.9.5 by John Okely

commit e6cc9e7e7d286c960c5a2d5f9eb1f79893599d35
Author: John Okely <john@moodle.com>
Date:   Fri, 12 Feb 2016 14:04:57 +0800
Tag:    v2.9.5

MDL-50218 lti: Return empty grade when none exists


commit a1409ba644c1cc5a2e742affece92bf0da91f986
Author: John Okely <john@moodle.com>
Date:   Thu, 07 Jan 2016 15:22:38 +0800
Tag:    v2.9.5

MDL-52608 core: Use property_exists in fullname