Configure to not Connect to a Server on Launch

[zZzUP3RzZz]

An option in the config file underneath a server's header, to mark it so it won't connect on launch.

Looks like this:

[servers.oftc]
nickname = "whatever"
server = "irc.oftc.net"
auto-connect = false

[casperstorm]

Just a few thoughts to adding this feature, which i think is a good addition.
Currently we don't have a way to disconnect or connect to a server. We auto-connect, and if it fails it is in a "dead" state.

We should extend our context menu when right clicking on a server to add "Disconnect" or "Connect".