Notes with initial empty content

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/data/PersonNote.java

@@ -22,9 +22,9 @@ public class PersonNote {
 	@ManyToOne
 	private Person person;
 
-	private String notekey;
+	private String notekey = "";
 
-	private String notetext;
+	private String notetext = "";
 
 	public PersonNote() {
 	}

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/PersonEditDetails.java

@@ -290,7 +290,8 @@ public class PersonEditDetails extends HorizontalLayout {
 				&& (binder.hasChanges()
 						|| contactLayout.hasChanges()
 						|| relationshipLayout.hasChanges()
-						|| adressLayout.hasChanges());
+						|| adressLayout.hasChanges()
+						|| notes.hasChanges());
 	}
 
 }