Author: Stephen Bourget
MDL-55910 events: backport MDL-45753 dashboard events
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e8924af84a6ad0515342e16dbfc44be86cd0572e
http://github.com/moodle/moodle/commit/e8924af84a6ad0515342e16dbfc44be86cd0572e
+ 3.1 en [eventdashboardreset,core]
+ 3.1 en [eventdashboardsreset,core]
+ 3.1 en [eventdashboardviewed,core]