Add a "Navigation" settings nav item under Look and Feel
- Tabs for client nav and admin nav
- Available actions list that shows all actions available to be added to the navigation
- There should be an "Add" button on each row that adds the action as a nav item at the bottom of the navigation
- Drag and drop interface for building and organizing navigation with indentation for subitems
- There should be a "Remove" button on each row to remove the nav item from the navigation
- We should have some way of marking a nav item as a subitem which would make it appear indented
- A checkbox? A clickable icon?
- In the back end we can auto assign these sub items to the most recently seen primary nav item
- It would be nice to have some kind of preview of the navigation, but it is not essential