Git commits in Moodle 2.8.0 by Andrea Bicciolo

commit 087be6ca90a8d423c8f9eb14de9eb54d1a820c23
Author: Andrea Bicciolo <a.bicciolo@mtouch.it>
Date:   Wed, 29 Oct 2014 12:44:16 +0800
Tag:    v2.8.0-rc1

MDL-47201 Reports: Read from multiple log stores in outline report