Git commits in Moodle 2.2.2 by M Kassaei

commit 5d2dce09b3d76ab05df8cc717d714656041a41e0
Author: M Kassaei <m.kassaei@open.ac.uk>
Date:   Fri, 20 Jan 2012 19:59:14 +0800
Tag:    v2.2.2

MDL-31306 question preview: disable 'Fill correct' for qtypes that can't