array parameter not handled correctly in phpfreechat admin

I've actually fixed this in my own copy - posting the issue here so I remember to upload it (when I have time).

Version 1.2 of phpFreeChat introduced some new features, called "proxies", and one of them - the noflood proxy - isn't working properly. People were being kicked out of the chat for flooding if they just typed fast. There's an interface turning this off in the phpFreeChat admin area, but it didn't work. That was because none of the array parameters were handled properly in code. Now they are - except I haven't uploaded the fix yet.

There's also one parameter that I need to either take out of phpFreeChat admin or recode, because it's a multidimensional array and does not work as is - that would be proxies_cfg.