Bug 120218 Right click menu option to apply theme.
We should support the following right click menu. -- User right clicks int he report design layout area. -- The following menu items needs to be supported Theme --> Apply Theme -->Theme1 -->Theme2 ( similar to Apply style menu option )
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/providers/SchematicContextMenuProvider.java
return;
	}
	/**
	 * Creats sub menu in the specified action group of the specified menu
	 * manager.
	 * 
	 * @param menuManager
	 *            The menu manager contains the action group.
	 * @param group_name
	 *            The action group contains the sub menu.
	 */
	private void createInsertElementMenu( IMenuManager menuManager,
			String group_name )
	{
		MenuManager subMenu = new MenuManager( ELEMENT_MENU_ITEM_TEXT );
		IAction action = getAction( GeneralInsertMenuAction.INSERT_TEXT_ID );
		action.setText( GeneralInsertMenuAction.INSERT_TEXT_DISPLAY_TEXT );
		subMenu.add( action );
		action = getAction( GeneralInsertMenuAction.INSERT_LABEL_ID );
		action.setText( GeneralInsertMenuAction.INSERT_LABEL_DISPLAY_TEXT );
		subMenu.add( action );
		action = getAction( GeneralInsertMenuAction.INSERT_DATA_ID );
		action.setText( GeneralInsertMenuAction.INSERT_DATA_DISPLAY_TEXT );
		subMenu.add( action );
		action = getAction( GeneralInsertMenuAction.INSERT_IMAGE_ID );
		action.setText( GeneralInsertMenuAction.INSERT_IMAGE_DISPLAY_TEXT );
		subMenu.add( action );
		action = getAction( GeneralInsertMenuAction.INSERT_GRID_ID );
		action.setText( GeneralInsertMenuAction.INSERT_GRID_DISPLAY_TEXT );
		subMenu.add( action );