Add ToDoes about Economy.

src/main/java/world/bentobox/challenges/panel/admin/EditChallengeGUI.java

@@ -25,6 +25,9 @@ import world.bentobox.challenges.utils.GuiUtils;
 /**
  * This class contains all necessary methods that creates GUI and allow to edit challenges
  * properties.
+ *
+ * TODO: In current class set that MONEY are availabe only if ECONOMY exist.
+ * TODO: In current class set that ISLAND LEVEL are availabe only if LEVEL ADDON exist.
  */
 public class EditChallengeGUI extends CommonGUI
 {

src/main/java/world/bentobox/challenges/panel/admin/EditLevelGUI.java

@@ -28,7 +28,8 @@ import world.bentobox.challenges.utils.GuiUtils;
 
 /**
  * This class contains all necessary elements to create Levels Edit GUI.
- */
+ * TODO: In current class set that MONEY are availabe only if ECONOMY exist.
+*/
 public class EditLevelGUI extends CommonGUI
 {
 // ---------------------------------------------------------------------