3909 Standardize use of navigation class on actions

https://code.google.com/p/otwarchive/issues/detail?id=3909

Use the navigation class only on major navigation items (leave it on header/dashboard/footer items, make sure it's on the subnavigation, remove it from anywhere else). Now we can make the site prettier in the future!

Yeah, I know this is going to sit for a while. :P