[Fix bug 1178755] Added 'ro' to PROD_LANGUAGES accepted locales.
[Fix bug 1178755] Added 'ro' to PROD_LANGUAGES accepted locales.

fxa90id/mozillians,chirilo/mozillians,justinpotts/mozillians,anistark/mozillians,anistark/mozillians,brian-yang/mozillians,mozilla/mozillians,akarki15/mozillians,safwanrahman/mozillians,akarki15/mozillians,fxa90id/mozillians,akatsoulas/mozillians,safwanrahman/mozillians,justinpotts/mozillians,akatsoulas/mozillians,chirilo/mozillians,akarki15/mozillians,anistark/mozillians,akatsoulas/mozillians,johngian/mozillians,mozilla/mozillians,hoosteeno/mozillians,brian-yang/mozillians,hoosteeno/mozillians,akatsoulas/mozillians,hoosteeno/mozillians,safwanrahman/mozillians,chirilo/mozillians,fxa90id/mozillians,brian-yang/mozillians,safwanrahman/mozillians,mozilla/mozillians,mozilla/mozillians,justinpotts/mozillians,justinpotts/mozillians,johngian/mozillians,akarki15/mozillians,brian-yang/mozillians,hoosteeno/mozillians,johngian/mozillians,johngian/mozillians,chirilo/mozillians,anistark/mozillians,fxa90id/mozillians