server notes sync slide changes both ways, fixes #1425

plugin/notes-server/client.js

@@ -45,6 +45,11 @@
 		post();
 	} );
 
+	// When the state changes from inside of the speaker view
+	socket.on( 'statechanged-speaker', function( data ) {
+		Reveal.setState( data.state );
+	} );
+
 	// Monitor events that trigger a change in state
 	Reveal.addEventListener( 'slidechanged', post );
 	Reveal.addEventListener( 'fragmentshown', post );