Merge pull request #3418 from VistaPOWA/pr_announce

[CONFIG][BACKEND] Adds PR announcing to the game.

code/controllers/configuration.dm

@@ -102,6 +102,9 @@
 	var/rename_cyborg = 0
 	var/ooc_during_round = 0
 
+	var/comms_key = "default_pwd" //Server API key
+	var/comms_allowed = 0 //By default, the server does not allow messages to be sent to it, unless the key is strong enough (this is to prevent misconfigured servers from becoming victims)
+
 	//Used for modifying movement speed for mobs.
 	//Unversal modifiers
 	var/run_speed = 0
@@ -266,6 +269,10 @@
 					Tickcomp = 1
 				if("automute_on")
 					automute_on = 1
+				if("comms_key")
+					comms_key = value
+					if(value != "default_pwd" && length(value) > 6) //It's the default value or less than 6 characters long, warn badmins
+						comms_allowed = 1
 				else
 					diary << "Unknown setting in configuration: '[name]'"