Removed unneeded language files.

R=neil.fraser@gmail.com

Review URL: https://codereview.appspot.com/31140043

git-svn-id: http://blockly.googlecode.com/svn/trunk@1508 c400ca83-b69d-9dd7-9705-49c6b8615e23
Fixed Portuguese and added it to the index.
I realized that translatewiki has been writing to pt_br,
but our apps read from pt-br.
One confusing thing I did in this CL, that may not be clear on Rietveld:
1. I deleted apps/json/pt-br.json.
2. I moved pt_br.json to pt-br.json to get the additional terms.
3. I regenerated the files.
TODO: Ask Siebrand to use pt-br instead of pt_br.

R=neil.fraser@gmail.com

Review URL: https://codereview.appspot.com/31090044

git-svn-id: http://blockly.googlecode.com/svn/trunk@1509 c400ca83-b69d-9dd7-9705-49c6b8615e23