Git commits in Moodle 2.8.x by Jonathan Harker

commit 81ba2632ed4ba07267e5f6677ec49c25d8386f50
Author: Jonathan Harker <jonathan@catalyst.net.nz>
Date:   Tue, 23 Sep 2014 08:52:47 +0800
Tag:    v2.8.0-beta

MDL-47316 mod_forum: Fix course overview performance