Bug 124599 Shortcut delete and menu delete act different in table column.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/parts/GraphicalEditorWithFlyoutPalette.java
* Adds an editor action to this editor.
	 * 
	 * <p>
	 * <Editor actions are actions that depend and work on the editor.
	 * 
	 * @param action
	 *            the editor action
	 */
	protected void addEditorAction( EditorPartAction action )
	{
		getActionRegistry( ).registerAction( action );
		editorActionIDs.add( action.getId( ) );
	}
	/**
	 * Adds an <code>EditPart</code> action to this editor.
	 * 
	 * <p>
	 * <code>EditPart</code> actions are actions that depend and work on the
	 * selected <code>EditPart</code>s.
	 * 
	 * @param action
	 *            the <code>EditPart</code> action
	 */
	protected void addEditPartAction( SelectionAction action )
	{
		getActionRegistry( ).registerAction( action );
		editPartActionIDs.add( action.getId( ) );
	}
	/**
	 * Adds an <code>CommandStack</code> action to this editor.