overhauled registry

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

@@ -1,4 +1,11 @@
 package de.srsoftware.web4rail.tiles;
 
+import de.srsoftware.web4rail.BaseClass;
+
 public class EndN extends Tile{
+	@Override
+	protected void removeChild(BaseClass child) {
+		// this class has no child elements		
+	}
+
 }