Author: Paul Holden
MDL-76902 course: create categories datasource for custom reporting.
New report source based on the course category entity, joined to the
course, cohort and role assignment/user entities to provide data for
the reportbuilder editor.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=db5c663fb9e8d44bb53e97625527ea2cee4c23b4
http://github.com/moodle/moodle/commit/db5c663fb9e8d44bb53e97625527ea2cee4c23b4
+ 4.3 en [coursecount,core_course]