Adds a new configuration value, SERVERURL, for the IRC bot to use if set

code/controllers/configuration.dm

@@ -86,6 +86,7 @@
 	var/guests_allowed = 1
 	var/debugparanoid = 0
 
+	var/serverurl
 	var/server
 	var/banappeals
 	var/wikiurl
@@ -365,6 +366,9 @@
 				if ("hostedby")
 					config.hostedby = value
 
+				if ("serverurl")
+					config.serverurl = value
+
 				if ("server")
 					config.server = value