feat(rxApp): expose appRoutes via rootScope

This allows applications to customize the menu for their app.

BREAKING CHANGE: The 'menu' property has been changed to 'app-routes' to be more descriptive
test(rxApp): update midway tests based on new demo
feat(rxApp): switch rxAppRoutes to service
Merge pull request #233 from rackerlabs/rxApp-public-routes

feat(rxApp): expose additional functionality with rxAppRoutes