Author: Andrew Hancox
MDL-57455 mod_data: Implement tagging
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ca5f3e0a2e444794f247bdf1ffd4163e6004bcfe
http://github.com/moodle/moodle/commit/ca5f3e0a2e444794f247bdf1ffd4163e6004bcfe
+ 3.4 en [tagarea_data_records,mod_data]