Author: Gerard (Gerry) Caulfield
MDL-26807 Updating the withselectedusers_help string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e336dd64380126df177f8056f5ed9e0a25c3b177
http://github.com/moodle/moodle/commit/e336dd64380126df177f8056f5ed9e0a25c3b177