Developer credits
Git commits in Moodle 2.3.x by ISHIKAWA Takayuki
commit d0d407f0bb7a3996e551fb9aa4a653a5c9bd28f9 Author: ISHIKAWA Takayuki <rechka_osaka@yahoo.co.jp> Date: Thu, 14 Jun 2012 20:29:33 +0800 Tag: v2.3.1 MDL-33757 gradebook: Adding support to sort userlist by email address