Author: Shamim Rezaie
MDL-68167 user: Fix a hardcoded string to be read from lang pack
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5dd385d522f6f72e445f54b25fe50b8c7c3002f9
http://github.com/moodle/moodle/commit/5dd385d522f6f72e445f54b25fe50b8c7c3002f9
+ 3.9 en [filtertype,core_user]