Added Romanian and traditional Chinese to index.
I manually cut and pasted the most recent additions to ro.json.
The language name strings for zh-hant and zh-hans were wrong, so I swapped them.

Review URL: https://codereview.appspot.com/34850044

git-svn-id: http://blockly.googlecode.com/svn/trunk@1527 c400ca83-b69d-9dd7-9705-49c6b8615e23
Added file left out of previous CL.

Review URL: https://codereview.appspot.com/34890043

git-svn-id: http://blockly.googlecode.com/svn/trunk@1528 c400ca83-b69d-9dd7-9705-49c6b8615e23