Git commits in Moodle 2.6.7 by John Okely

commit b69fd9df9eb410783e822c712f2e2f87fd17cf75
Author: John Okely <john@moodle.com>
Date:   Thu, 13 Nov 2014 14:26:31 +0800
Tag:    v2.6.7

MDL-47700 Grades: Fix incorrect config for overview report showrank