Server list update

Today I wanted to get to the bottom of why SteamBot took so long to connect to Steam (which would show "Disconnected from Steam network" many times before finally connecting).
I thought it might be due to the servers that SteamBot was trying to connect to, so I ran 50 ping tests on each server IP (the ones that weren't commented out) using a [handy tool](http://i.imgur.com/xrPoLgk.png). As you can see from [the results](http://i.imgur.com/xrPoLgk.png), most of the servers are dead and don't reply to pings anymore.
After removing all those servers, SteamBot connects successfully the first time, every time.