Author: Michael Milette
MDL-63219 Output: Enable filters in custom menus.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b2d59a0372e9ec9129462e3d45a2d9364b0ccef6
http://github.com/moodle/moodle/commit/b2d59a0372e9ec9129462e3d45a2d9364b0ccef6
+ 5.0 en [navfilter,core_admin]
+ 5.0 en [navfilter_desc,core_admin]