Author: Andrew Davis
rating MDL-23908 improved rating role tips help item
http://git.moodle.org/gw?p=moodle.git;a=commit;h=9f8e61de83b54d8de2aed8b2f875a730cc2ac1a3
http://github.com/moodle/moodle/commit/9f8e61de83b54d8de2aed8b2f875a730cc2ac1a3
+ 2.0 en [rolewarning_help,core_rating]