Author: Gerard (Gerry) Caulfield
MDL-26807 Updating the withselectedusers_help string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b15041dc403821f09492893cf6cb3aef309d65e7
http://github.com/moodle/moodle/commit/b15041dc403821f09492893cf6cb3aef309d65e7