new cp admin, specifics on other countries/locale settings

1) in user listing, show date format specific to each country. Ex: DD/MM/YY instead of MM/DD/YY or YY/MM/DD

2) would really be nice comma instead of dot for sepator (ex: 12.5 GB / 100, better 12,5 GB) for certain countries that use decimal system.

So when adding quota, permit comma, also up top, show with comma not dot.