Developer credits
Git commits in Moodle 2.4.0 by ISHIKAWA Takayuki
commit 69101b43925b493a6802b9644436b6799801a123 Author: ISHIKAWA Takayuki <rechka_osaka@yahoo.co.jp> Date: Thu, 14 Jun 2012 20:29:33 +0800 Tag: v2.4.0-beta MDL-33757 gradebook: Adding support to sort userlist by email address