fxml files changes + first style

src/main/java/ch/zhaw/gartenverwaltung/Settings.java

@@ -9,6 +9,8 @@ public class Settings {
     private static Settings instance;
     private final BooleanProperty showTutorial = new SimpleBooleanProperty(false);
 
+    private String location = "";
+
     static {
         instance = new Settings();
     }
@@ -38,4 +40,12 @@ public class Settings {
     public boolean getShowTutorial() {
         return this.showTutorial.get();
     }
+
+    public void setLocation(String location) {
+        this.location = location;
+    }
+
+    public String getLocation() {
+        return this.location;
+    }
 }