Add routes for subnavigation
Update navLink class to take a parent and id attribute
Update link model to provide parent information
Keep nav updated from navLink as to which link the user is currently interacting with
Add activeLink to nav directive
Update navLink template
Update nav template to use subnav
Update nav spec to run subnav through
Update navLink spec
Update nav unit test
Add subnav directive
Add savedMedia view
Add cameras/settings view
Add security/devices view
Add security/sensors view
Add settings/account view
Add settings/alerts view
Add settings/cameras view
Add settings/sensors-and-devices view
Add settings/system view