Author: Petr Škoda
MDL-44911 use unknown_logged class when viewing unknown events in reports
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d409944a95c61c2b74056dab9c5098f8d706b7a9
http://github.com/moodle/moodle/commit/d409944a95c61c2b74056dab9c5098f8d706b7a9
+ 2.7 en [eventunknownlogged,core]