Author: Paul Holden
MDL-71889 user: help text for profile field max length/user identity.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f69077aa8c879c6f7882c84832118b29fbdf37be
http://github.com/moodle/moodle/commit/f69077aa8c879c6f7882c84832118b29fbdf37be
+ 4.0 en [profilefieldmaxlength,core_admin]
+ 4.0 en [profilefieldmaxlength_help,core_admin]