Developer credits
Git commits in Moodle 2.1.x by Mayank Gupta
commit cdc502c5310fbda20f9ba9ce10d2f5b0659aaf88 Author: Mayank Gupta <mayankgupta2005@gmail.com> Date: Sat, 09 Apr 2011 02:10:36 +0800 Tag: v2.1.3 MDL-27037, wiki does not support visiblegroups functionality