Developer credits
Git commits in Moodle 2.9.0 by Ashley Holman
commit e629bd3ff37049f2b2803e71178819b326273e6b Author: Ashley Holman <dscvlt@gmail.com> Date: Mon, 14 Jul 2014 17:17:38 +0800 Tag: v2.9.0-beta MDL-46356 assign: remove unnecessary get_area_files call