get ID for QuestCat / DialogCat

src/main/java/noppes/npcs/controllers/data/DialogCategory.java

@@ -61,4 +61,9 @@ public class DialogCategory implements IDialogCategory {
 		dialog.category = this;
 		return dialog;
 	}
+
+	@Override
+	public int getId() {
+		return this.id;
+	}
 }

src/main/java/noppes/npcs/controllers/data/QuestCategory.java

@@ -61,4 +61,9 @@ public class QuestCategory implements IQuestCategory {
         quest.category = this;
         return quest;
     }
+
+    @Override
+    public int getId() {
+        return this.id;
+    }
 }