Author: Paul Holden
MDL-72172 cohort: implement cohort datasource for custom reporting.
Create two entities exposing reportable data on site cohorts and
their members, via column and filter definitions.
Create report source bringing them together along with the user
entity to provide data for the reportbuilder editor.
Co-authored-by: Carlos Castillo <carlos.castillo@moodle.com>
http://git.moodle.org/gw?p=moodle.git;a=commit;h=bbf95413fbdd9825039d97074c78e848b9b8de30
http://github.com/moodle/moodle/commit/bbf95413fbdd9825039d97074c78e848b9b8de30
+ 4.0 en [cohortmember,core_cohort]