Author: Frederic Massart
MDL-45895 user: Scaffold of the new preferences page
Part of MDL-45774
http://git.moodle.org/gw?p=moodle.git;a=commit;h=0e8418a8de6b8b4f104b5c6bbd92f95df353fc46
http://github.com/moodle/moodle/commit/0e8418a8de6b8b4f104b5c6bbd92f95df353fc46
+ 2.9 en [cannotedituserpreferences,core_error]