Created tableview and table columns

src/main/java/no/ntnu/idatt1002/demo/view/SceneController.java

@@ -32,7 +32,7 @@ public class SceneController {
     private TableColumn<Expense, Double> amount;
 
     @FXML
-    private TableColumn<Expense, Double> recurring;
+    private TableColumn<Expense, Boolean> recurring;
 
     @FXML
     private TableColumn<Expense, ExpenseCategory> category;