Missing classes on navigation items

Hello,

it looks like that Listing and Add Listing items are missing some classes on main navigation. If you are using sub-menus on navigation it is nice to have menu-item-has-children class for these items. Also menu-item-##### class is missing which should be there for some custom styling (now there is no unique ID or class name for these menu items).

We are using Sky theme and adding custom post types destroy layout and navigation is listed on four rows:
http://www.pixhost.org/show/252/25509751_sky_broken_navigation.jpg
http://www.pixhost.org/show/252/25509755_sky_broken_navigation_code.jpg

After I manually add menu-item-has-children class using Firebug, layout is fixed:
http://www.pixhost.org/show/252/25509757_sky_fixed_navigation.jpg
http://www.pixhost.org/show/252/25509763_sky_fixed_navigation_code.jpg

Can you please fix your plugin and generate this classes automatically if item has sub-menu? Also it would be great to have there some unique ID or class.

Thanks,
Michal