Developer credits
Git commits in Moodle 2.5.9 by Adrian Greeve
commit cc375a22b95b2e0f927a21ffd97c06f2276d8c14 Author: Adrian Greeve <adrian@moodle.com> Date: Tue, 28 Oct 2014 10:20:37 +0800 Tag: v2.5.9 MDL-47697 mod_data: Fix group id change when editing.