Git commits in Moodle 2.3.0 by ppichet

commit 0cba6a8d5e67c5a88588cedc61e5369893a3d65f
Author: ppichet <pichet.pierre@uqam.ca>
Date:   Sat, 28 Apr 2012 02:22:03 +0800
Tag:    v2.3.0-beta

MDL-32181 question/calculatedmulti validate multianswers

commit c9340ac145afe8705dc2757648e76dc0586f6c79
Author: ppichet <pichet.pierre@uqam.ca>
Date:   Mon, 16 Apr 2012 10:11:10 +0800
Tag:    v2.3.0-beta

MDL-32358 : numerical question: validation messages errors

commit 57239949ac0ebed8d2cb4d1223a6f110eea1265b
Author: ppichet <pichet.pierre@uqam.ca>
Date:   Wed, 04 Apr 2012 20:53:03 +0800
Tag:    v2.3.0-beta

MDL-32217 Setting options->unitgradingtype