Bug 360192 - Support Proxy error codes better than "status 215398###"

r=silver@warwickcompsoc.co.uk (James Ross)
ChatZilla Only.

extensions/irc/locales/en-US/chrome/chatzilla.properties

@@ -1169,6 +1169,9 @@ msg.connection.reset   = Connection to %S (%S) reset.
 msg.connection.quit    = Disconnected from %S (%S).
 msg.close.status       = Connection to %S (%S) closed with status %S.
 
+msg.proxy.connection.refused = The proxy server you configured is refusing the connection.
+msg.unknown.proxy.host       = Unknown proxy host connecting to %S (%S).
+
 # In these messages, %1$S is a connection error from above.
 msg.connection.exhausted   = "%1$S Connection attempts exhausted, giving up.
 msg.reconnecting.in        = "%1$S Reconnecting in %2$S.