Author: Paul Holden
MDL-79830 tag: flag count entity reporting via column/filter.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c6963d1c0edfe6191159ecc1497725d7ac5d6fca
http://github.com/moodle/moodle/commit/c6963d1c0edfe6191159ecc1497725d7ac5d6fca
+ 4.4 en [flagcount,core_tag]