Renamed apps/code/common.js to apps/code/code.js.
Review URL: https://codereview.appspot.com/8168044

git-svn-id: http://blockly.googlecode.com/svn/trunk@731 c400ca83-b69d-9dd7-9705-49c6b8615e23
Removed level 10.
Added new level between old levels 4 and 5.
Review URL: https://codereview.appspot.com/8319046

git-svn-id: http://blockly.googlecode.com/svn/trunk@732 c400ca83-b69d-9dd7-9705-49c6b8615e23
Adds Basque, Danish, Greek, and Portuguese.  Adds new level description to Danish.
Review URL: https://codereview.appspot.com/8361044

git-svn-id: http://blockly.googlecode.com/svn/trunk@733 c400ca83-b69d-9dd7-9705-49c6b8615e23
Reverted bad changes to maze languages.

git-svn-id: http://blockly.googlecode.com/svn/trunk@734 c400ca83-b69d-9dd7-9705-49c6b8615e23