Issue #97 Room Settings

- Room Settings node renamed to Room State Events
- Room State Events node allows configuring inputs/outputs from config
- Fix bug with various nodes allowing execution even though matrix server isn't connected
- Replace deprecated matrixClient.setGlobalErrorOnUnknownDevices method
- Update docs for new Room State Events node

src/matrix-react.js

@@ -34,6 +34,7 @@ module.exports = function(RED) {
             if(!node.server.isConnected()) {
                 node.error("Matrix server connection is currently closed", msg);
                 node.send([null, msg]);
+                return;
             }
 
             msg.topic = node.roomId || msg.topic;