Fixed bug with saving to flat file.

Must remember to include blank constructor so Beans can create the
object!

src/main/java/bskyblock/addon/challenges/database/object/ChallengeLevels.java

@@ -16,6 +16,7 @@ import us.tastybento.bskyblock.database.objects.DataObject;
  */
 public class ChallengeLevels implements DataObject, Comparable<ChallengeLevels> {
 
+    public ChallengeLevels() {}
 
     @ConfigComment("A friendly name for the level. If blank, level name is used.")
     private String friendlyName = "";

src/main/java/bskyblock/addon/challenges/database/object/Challenges.java

@@ -23,6 +23,8 @@ import us.tastybento.bskyblock.database.objects.DataObject;
  */
 public class Challenges implements DataObject {
     
+    public Challenges() {}
+
     public enum ChallengeType {
         /**
          * This challenge only shows and icon in the GUI and doesn't do anything.