add windowIsClosing ligic to the TodeCodeEditors (client and server-side logic) ... `create accessors` menu item for class hierarchy window ... add `inspect client element` menu item to standard window menu (replace .window/model stuff) ... TdToolBuilders leverage windowIsClosing logic to close all child windows when parent is closed ... TDToolBuilders use a clientListBlock for generating client list which makes for automatic `refresh` when window contents is refreshed (CML-l) ...