Subject menu active/open highlights are a little off

[briandominick]

Our Navgoco implementation (the left nav menu) uses the classes active and open to keep track of what submenus to expand and what active links to highlight. It is supposed to strongly highlight the link to the page the browser is on (this works) and subtly highlight the submenu containing the page the browser is on (this partly works).

[briandominick]

A third problem is represented here:

This is the default behavior when landing on the Search Config topic page or even clicking "Configure Search" in the subject nav without clicking the collapse caret.

If you are on a topic that has a submenu, the submenu should be open and subtly highlighted.