Author: Gerard (Gerry) Caulfield
MDL-26807 Updating the withselectedusers_help string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=592aa64ac5f1f8054255ee9cbf922502179dd25a
http://github.com/moodle/moodle/commit/592aa64ac5f1f8054255ee9cbf922502179dd25a