Developer credits
Git commits in Moodle 2.5.0 by Tim Gus
commit e1580085c437445822061a795b1b3a1559a6774c Author: Tim Gus <tim.gusak@remote-learner.net> Date: Sat, 05 Jan 2013 01:29:14 +0800 Tag: v2.5.0-beta MDL-31557 Add index for timemodified in grade_grades_history table