Incorporated latest changes from translatewiki.
- Added Greek, French, Italian, Dutch, and Ukrainian to index page.
- Added Greek to Turtle.
- Back-propagated changes to qqq.json.

R=neil.fraser@gmail.com

Review URL: https://codereview.appspot.com/26500045

git-svn-id: http://blockly.googlecode.com/svn/trunk@1499 c400ca83-b69d-9dd7-9705-49c6b8615e23