Git commits in Moodle 2.8.x by Viduranga Wijesooriya

commit cfd867e7d91c377d38e34127b33a3ecdfbaf0490
Author: Viduranga Wijesooriya <vpowerrc@gmail.com>
Date:   Thu, 26 Mar 2015 03:33:45 +0800
Tag:    v2.8.6

MDL-49477 availability_grade-form: checkbox disable problem fixed