Git commits in Moodle 2.0.10 by sam marshall

commit 70bc0513df125bb659d4682c456519d2fa977f1c
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Sun, 27 May 2012 12:49:10 +0800
Tag:    v2.0.10

MDL-33466: Group restriction should hide activity even with 'show availability' option