Add support for standard port 80

[7im-]

Full FAH client supports both port 80 and 8080. NaCl should do the same. See line 870:

function ws_call(ws, cmd, data, success, error, upload, download) { server_call('http://' + ws + ':8080/api/' + cmd, data, success, error, upload, download);

[Kryptoxic]

I'm staying subscribed to this. I really hope the enhancement is added because I use my personal laptop to fold at school sometimes and my school blocks every other port except 80 so a port 80 fallback would be nice in case port 8080 cannot connect.