Author: Paul Holden
MDL-85497 user: ask for confirmation before page is reset.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ea840539a4ac7a849ab7892e07653162ba89a84f
http://github.com/moodle/moodle/commit/ea840539a4ac7a849ab7892e07653162ba89a84f
+ 5.1 en [resetpageconfirm,core_my]