Author: Mark Nelson
MDL-40045 user: replaced add_to_log call when the user list is viewed with an event
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f2f694f399d34e1b9b4651687ea959cc01534853
http://github.com/moodle/moodle/commit/f2f694f399d34e1b9b4651687ea959cc01534853
+ 2.6 en [eventuserlistviewed,core]