fixed bug when deleting tiles

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

@@ -104,7 +104,7 @@ public abstract class Bridge extends Tile {
 	@Override
 	public void removeChild(BaseClass child) {
 		if (child == counterpart) counterpart = null;
-		plan.place(this);
+		super.removeChild(child);
 	}
 	
 	@Override

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

@@ -190,6 +190,7 @@ public class Contact extends Tile{
 	@Override
 	public void removeChild(BaseClass child) {
 		if (child == actions) actions = null;
+		super.removeChild(child);
 	}
 	
 	public static Select selector(Contact preselect) {

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

@@ -33,10 +33,11 @@ public class Shadow extends Tile{
 	
 	@Override
 	public void removeChild(BaseClass child) {
+		super.removeChild(child);
 		if (child == overlay) {
 			overlay = null;
 			remove();
-		}
+		}		
 	}
 	
 	@Override

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

@@ -77,9 +77,9 @@ public abstract class StretchableTile extends Tile {
 	
 	@Override
 	public BaseClass remove() {
-		super.remove();
+		LOG.debug("Removing stretchable Tile ({}) {}",id(),this);
 		removeShadows();
-		return this;
+		return super.remove();
 	}
 	
 	private void removeShadows() {

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

@@ -376,16 +376,24 @@ public abstract class Tile extends BaseClass implements Comparable<Tile>{
 	
 	@Override
 	public BaseClass remove() {
-		super.remove();
-		while (!routes.isEmpty()) routes.first().remove();
-		return this;
+		while (!routes.isEmpty()) {
+			routes.first().remove();		
+		}
+		return super.remove();
 	}
 	
 	@Override
 	public void removeChild(BaseClass child) {
-		routes.remove(child);
+		String childAsString = child.toString();
+		if (childAsString.length()>20) childAsString = childAsString.substring(0, 20)+"…";
+		LOG.debug("Removing {} from {}",childAsString,this);
+		if (child instanceof Route) {
+			routes.remove(child);			
+		}
+		
 		if (child == train) train = null;
 		if (child == route) route = null;
+		super.removeChild(child);
 		plan.place(this);
 	}