Author: Andrew Davis
MDL-27156 repository: Added a new capability so that select users can bypass file size restrictions
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8ac95c279cb1be2bf41683a42146e9cdd6054cfd
http://github.com/moodle/moodle/commit/8ac95c279cb1be2bf41683a42146e9cdd6054cfd
+ 2.3 en [course:ignorefilesizelimits,core_role]