Author: Paul Holden
MDL-79781 course: detect invalid creator role for pending courses.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=512670fe944c36dfcea231a0131adc7b19aa4b81
http://github.com/moodle/moodle/commit/512670fe944c36dfcea231a0131adc7b19aa4b81
+ 4.1 en [courserequestroleerror,core]