Git commits in Moodle 2.5.4 by Aaron Barnes

commit fc938d3c5e3c330a39f5ffa325039b030f3711cf
Author: Aaron Barnes <aaronb@catalyst.net.nz>
Date:   Mon, 16 Dec 2013 12:08:08 +0800
Tag:    v2.5.4

MDL-43394 behat: Fix checkbox action


commit 3f44ba8664f4afde8176b9dd36443564cdf447f1
Author: Aaron Barnes <aaronb@catalyst.net.nz>
Date:   Fri, 15 Nov 2013 08:34:06 +0800
Tag:    v2.5.4

MDL-42913 lib/grouplib.php: Avoid cache sometimes for groups_get_all_groups


commit 2d68ba169d2503331d040a910791f5f57acdcfdd
Author: Aaron Barnes <aaronb@catalyst.net.nz>
Date:   Wed, 04 Sep 2013 16:35:50 +0800
Tag:    v2.5.4

MDL-41592 behat: Allow alt wwwroot to be set for acceptance testing