implemented small delay between setting signal to go and start of train. various GUI improvements

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

@@ -2,6 +2,7 @@ package de.srsoftware.web4rail.tiles;
 
 import java.io.IOException;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -305,7 +306,9 @@ public abstract class Block extends StretchableTile{
 		if (isNull(exclude)) exclude = new Vector<Block>();
 		Select select = new Select(Block.class.getSimpleName());
 		new Tag("option").attr("value","0").content(t("unset")).addTo(select);
-		for (Block block : BaseClass.listElements(Block.class)) {
+		List<Block> blocks = BaseClass.listElements(Block.class);
+		Collections.sort(blocks, (b1,b2) -> b1.name.compareTo(b2.name));
+		for (Block block : blocks) {
 			if (exclude.contains(block)) continue;
 			Tag opt = select.addOption(block.id(), block);
 			if (block == preselected) opt.attr("selected", "selected");

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

@@ -44,6 +44,14 @@ public abstract class Signal extends Tile {
 		super();
 	}
 	
+	public HashSet<Integer> addresses(){
+		HashSet<Integer> list = new HashSet<Integer>();
+		for (HashSet<int[]> commands : aspects.values()) {
+			for (int[] data : commands) list.add(data[0]);
+		}
+		return list;
+	}
+	
 	@Override
 	protected Vector<String> classes() {
 		Vector<String> classes = super.classes();