- added else branch to conditional actions

- implemented history for any object extending BaseClass (i.e. almost any)
- added distance() calculation method to base class
- Button "edit JSON" in Action Lists now hidden by default, can be enabled in plan properties

- fixed bugs:
    - updating json of DisplayText was not working properly
    - log output in Tile.isFreeFor was broken

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

@@ -189,7 +189,7 @@ public class Contact extends Tile{
 		formInputs.add(t("Address"),span);
 		
 		Fieldset fieldset = new Fieldset(t("Actions")).id("props-actions");
-		actions.list().addTo(fieldset);
+		actions.listAt(fieldset);
 		postForm.add(fieldset);
 		return super.properties(preForm, formInputs, postForm,errors);
 	}

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

@@ -129,11 +129,11 @@ public class Switch extends Tile{
 	protected Window properties(List<Fieldset> preForm, FormInput formInputs, List<Fieldset> postForm,String...errors) {
 		Fieldset fieldset = new Fieldset(t("Actions (On)"));
 		fieldset.id("actionsOn");
-		actionsOn.list().addTo(fieldset);
+		actionsOn.listAt(fieldset);
 		postForm.add(fieldset);
 		fieldset = new Fieldset(t("Actions (Off)"));		
 		fieldset.id("actionsOff");
-		actionsOff.list().addTo(fieldset);
+		actionsOff.listAt(fieldset);
 		postForm.add(fieldset);
 		return super.properties(preForm, formInputs, postForm,errors);
 	}

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

@@ -149,18 +149,18 @@ public abstract class Tile extends BaseClass implements Comparable<Tile> {
 		Train train = newTrain.train();
 		
 		if (isSet(reservingTrain) && reservingTrain != train) {
-			LOG.debug("{} is reserved for {}",reservingTrain);
+			LOG.debug("{} is reserved for {}",this,reservingTrain);
 			return false; // nicht in reservierten Block einfahren!
 		}
 
 		if (isSet(lockingTrain) && lockingTrain != train) {
-			LOG.debug("{} is locked for {}",lockingTrain);
+			LOG.debug("{} is locked for {}",this,lockingTrain);
 			return false; // nicht in reservierten Block einfahren!
 		}
 
 		if (isSet(occupyingTrain) && occupyingTrain != train) {
-			LOG.debug("{} is occupied by {}",occupyingTrain);
-			return train.isShunting(); // nur in belegte Blöcke einfahren, wenn Rangiermodus aktiv!
+			LOG.debug("{} is occupied by {}",this,occupyingTrain);
+			return isSet(train) && train.isShunting(); // nur in belegte Blöcke einfahren, wenn Rangiermodus aktiv!
 		}
 
 		return true;