Added context menu and menu items for edit and delete

src/main/resources/view/dualList.fxml

@@ -5,6 +5,7 @@
 <?import javafx.scene.chart.PieChart?>
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.ComboBox?>
+<?import javafx.scene.control.ContextMenu?>
 <?import javafx.scene.control.DatePicker?>
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.MenuButton?>
@@ -71,6 +72,14 @@
                                        <columnResizePolicy>
                                           <TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
                                        </columnResizePolicy>
+                                       <contextMenu>
+                                          <ContextMenu>
+                                            <items>
+                                              <MenuItem fx:id="editIncomeMenu" mnemonicParsing="false" onAction="#handleEditBtn" text="Edit" />
+                                                <MenuItem fx:id="deleteIncomeMenu" mnemonicParsing="false" onAction="#handleDeleteBtn" text="Delete" />
+                                            </items>
+                                          </ContextMenu>
+                                       </contextMenu>
                                     </TableView>
                                     <Rectangle arcHeight="5.0" arcWidth="5.0" disable="true" fill="LIME" height="234.0" opacity="0.1" stroke="#d9cccc" strokeType="INSIDE" translateY="13.0" width="300.0" />
                                     <PieChart fx:id="incomePieChart" disable="true" opacity="0.0" prefHeight="1.0" prefWidth="1.0" visible="false" />
@@ -115,6 +124,14 @@
                                        <columnResizePolicy>
                                           <TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
                                        </columnResizePolicy>
+                                       <contextMenu>
+                                          <ContextMenu>
+                                            <items>
+                                              <MenuItem fx:id="editExpenseMenu" mnemonicParsing="false" onAction="#handleEditBtn" text="Edit" />
+                                                <MenuItem fx:id="deleteExpenseMenu" mnemonicParsing="false" onAction="#handleDeleteBtn" text="Delete" />
+                                            </items>
+                                          </ContextMenu>
+                                       </contextMenu>
                                     </TableView>
                                     <Rectangle arcHeight="5.0" arcWidth="5.0" disable="true" fill="RED" height="234.0" opacity="0.1" stroke="RED" strokeType="INSIDE" translateY="13.0" width="300.0" />
                                     <PieChart fx:id="expensePieChart" disable="true" opacity="0.0" prefHeight="1.0" prefWidth="1.0" visible="false" />