Author: Frederic Massart
MDL-46878 my: Allow admins to reset everyone's dashboard
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ad347f6874652a6e3101fa5c536f7dcde2296bea
http://github.com/moodle/moodle/commit/ad347f6874652a6e3101fa5c536f7dcde2296bea
+ 3.0 en [alldashboardswerereset,core_my]
+ 3.0 en [allprofileswerereset,core_my]
+ 3.0 en [reseteveryonesdashboard,core_my]
+ 3.0 en [reseteveryonesprofile,core_my]