Developer credits
Git commits in Moodle 2.1.4 by Igor Sazonov
commit 4d85fc8f222348e902ecebf67a61bc9e1be26082 Author: Igor Sazonov <sovletig@yandex.ru> Date: Fri, 02 Dec 2011 00:21:07 +0800 Tag: v2.1.4 MDL-27314 quiz attempts cannot be deleted in separate groups mode.