Add a setting to toggle whether replication is allowed, to be able to make a pure room, or even less, node.

core/core.js

@@ -23,13 +23,18 @@ const k_global_settings = {
 	room: {
 		type: 'boolean',
 		default_value: true,
-		description: 'Whether this instance should behave as a room.',
+		description: 'Enable peers to tunnel through this instance as a room.',
 	},
 	room_name: {
 		type: 'string',
 		default_value: 'tilde friends tunnel',
 		description: 'Name of the room.',
 	},
+	replicator: {
+		type: 'boolean',
+		default_value: true,
+		description: 'Enable message and blob replication.',
+	},
 	code_of_conduct: {
 		type: 'textarea',
 		default_value: undefined,