Git commits in Moodle 2.2.8 by Tim Hunt

commit 406f11ff7727ce0a66d5f49f7ebc12f8f9d55fa9
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 11 Jan 2013 20:51:53 +0800
Tag:    v2.2.8

MDL-37485 plugins overview: require_login before _capability.