Git commits in Moodle 2.2.7 by Michael de Raadt

commit 1cd1eb53e5d66979d65275e33fb4cbd80dbe2a94
Author: Michael de Raadt <michaeld@moodle.com>
Date:   Mon, 29 Oct 2012 17:58:51 +0800
Tag:    v2.2.7

MDL-35358 Lesson Module: fixed teacher grade essays display when lesson is only available for group members only