* Changed to refer to TCustomImageList instead of TImageList in ICommandBarConfig.SetImages methods. This is to support other image list classes in sub classes.
* Made TPopupMenuWrapper constructor virtual.
* Changed to use code from UMenuHelper to create required menu items.
* Added new, do nothing, TPopupMenuWrapper.InitMenu for use in sub subclasses to initialise a popup menu.
* Moved menu preparation code from popup menu popup event handler to new virtual TPopupMenuWrapper.PrepareMenu method.
