added new tiles and actions:

* Tile displaying text
* TextDisplay: an action that sends text to clients
* DetermineTrainInBlock: action that alters the context by requesting the train in a specific block

src/main/java/de/srsoftware/web4rail/actions/TriggerContact.java

@@ -19,10 +19,7 @@ public class TriggerContact extends Action {
 	
 	@Override
 	public boolean fire(Context context) throws IOException {
-		if (isSet(contact)) {
-			System.err.println("triggering "+contact);
-			contact.trigger(200);
-		}
+		if (isSet(contact)) return contact.trigger(200);
 		return false;
 	}