Developer credits
Git commits in Moodle 2.8.x by Jan C. Dageförde
commit 0da8db7426704a50de05ef8d58f957159d587d27 Author: Jan C. Dageförde <jan.dagefoerde@ercis.uni-muenster.de> Date: Wed, 07 Oct 2015 13:51:24 +0800 Tag: v2.8.9 MDL-51679 course: Update groupmode CSS class