Started clean re-implementation of

- reserving route
- preparing route
- locking route

New implementation now properly handles stop event from user.

Next things to implement:

- tracing train upon contact activation, taking care of:
    - causing contact
    - train's last position
    - route
    - plan.freeBehindTrain
- finish event, keeping brake processor in mind

src/main/java/de/srsoftware/web4rail/tiles/Turnout.java

@@ -159,7 +159,7 @@ public abstract class Turnout extends Tile implements Device{
 	}
 	
 	public Reply state(State newState) {
-		if (is(Status.LOCKED,Status.OCCUPIED) && newState != state) return new Reply(415, t("{} locked by {}!",this,train));
+		if (is(Status.LOCKED,Status.OCCUPIED) && newState != state) return new Reply(415, t("{} locked by {}!",this,train()));
 		if (address == 0) { 
 			state = newState;
 			plan.place(this);