Bug 182661 Cross Tab: Need to support "New Data Cube" from menu bar
Please look at the UI mockup as reference to support "New Data Cube" on dropdown menu from Menu bar.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/DesignerActionBarContributor.java
new RegisterActions( NewParameterAction.INSERT_SCALAR_PARAMETER,
					Messages.getString( "ParametersNodeProvider.menu.text.parameter" ) ),
			new RegisterActions( NewParameterAction.INSERT_CASCADING_PARAMETER_GROUP,
					Messages.getString( "ParametersNodeProvider.menu.text.cascadingParameter" ) ),
			new RegisterActions( NewParameterAction.INSERT_PARAMETER_GROUP,
					Messages.getString( "ParametersNodeProvider.menu.text.group" ) ),
	};
	/**
	 * The name of the insert menu
	 */
	public static final String M_INSERT = "birtInsert"; 
	/**
	 * The name of the element menu
	 */
	public static final String M_ELEMENT = "birtElement"; 
	/**
	 * The name of the data menu
	 */
	public static final String M_DATA = "birtData"; 
	/*
	 * @see org.eclipse.gef.ui.actions.ActionBarContributor#buildActions()
	 */
	protected void buildActions( )
	{
		addRetargetAction( new UndoRetargetAction( ) );
		addRetargetAction( new RedoRetargetAction( ) );
		addRetargetAction( new DeleteRetargetAction( ) );
		addRetargetAction( new ZoomInRetargetAction( ) );
		addRetargetAction( new ZoomOutRetargetAction( ) );
		addRetargetAction( new RetargetAction( ActionFactory.CUT.getId( ), null ) );