Git commits in Moodle 2.5.0 by Chris Scribner

commit 1706e83bb49b73aeffcf0869f7620575fb53aef0
Author: Chris Scribner <scriby@gmail.com>
Date:   Tue, 24 Apr 2012 22:48:47 +0800
Tag:    v2.5.0-beta

Fixing an issue with not sending the launch_presentation_return_url