Add number to default forward block in Turtle.

git-svn-id: http://blockly.googlecode.com/svn/trunk@656 c400ca83-b69d-9dd7-9705-49c6b8615e23
Touch up VN translation

git-svn-id: http://blockly.googlecode.com/svn/trunk@657 c400ca83-b69d-9dd7-9705-49c6b8615e23
Touch up VN translation

git-svn-id: http://blockly.googlecode.com/svn/trunk@658 c400ca83-b69d-9dd7-9705-49c6b8615e23