Author: Paul Holden
MDL-76933 badges: create user-focused datasource for custom reporting.
This report source differs from the original badges source (5274ee5a)
by making `user` the primary table of the report, allowing for reports
on all users regardless of whether they have been awarded badges.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ab670ab2861154ac8d2a4a18c4fda62a376b0c42
http://github.com/moodle/moodle/commit/ab670ab2861154ac8d2a4a18c4fda62a376b0c42
+ 4.2 en [userbadges,core_badges]