Developer credits
Git commits in Moodle 2.3.x by Eduardo Pinto
commit dd30ae41d079aa61dd71225497c44f9ed1c2b999 Author: Eduardo Pinto <efgpinto@gmail.com> Date: Thu, 23 Feb 2012 14:10:18 +0800 Tag: v2.3.0-beta MDL-26496 Lesson Module: removed warning when no answer is selected from single choice question