Pass $app to the startup and shutdown events
Work on events for site content and system routes
Pass the input array to the nav event handlers
Do some work on the route repo and interface
Do some work on the site content repo and interface
Update the manage controller

Switch routes and site content over to the new way of handling the
different actions
Remove the old user model event handler
Throw an exception when trying to delete a protected route
Clean up the system routes stuff a little bit
Rename the navigation event handler
Do some cleanup on the system routes manager
Change one of the nav items