Author: Paul Holden
MDL-79216 files: new report filter type for filesize data.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=0d9b79fb207406b8507c69fef5c34dfa27582d38
http://github.com/moodle/moodle/commit/0d9b79fb207406b8507c69fef5c34dfa27582d38
+ 4.4 en [filterfieldunit,core_reportbuilder]