Author: Adrian Greeve
MDL-31750 - course: Creating a consistent api for checking permissions for moving courses to different categories.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fae51910bf8d7e859f9dae807b9ca54089c5109e
http://github.com/moodle/moodle/commit/fae51910bf8d7e859f9dae807b9ca54089c5109e
+ 2.5 en [cannotmovecoursetocategory,core_error]