Detect when a vehicle is on its final loop

[elliottwilliams]

As a transit rider, I want to know when a vehicle I am boarding will be stopping, so that I can determine whether I should board a vehicle, wait for another, or find alternative transit options.

Any time a vehicle is listed, if it is on the final loop of its itinerary, a "final loop" badge should be displayed next to the vehicle.

This feature depends on Scheduler functionality on the backend.

• Add a method to CanonicalRoute to determine if an itinerary position is in the final loop
• Show "final loop" badge in the arrivals table of the station view
• Show "final loop" badge in the vehicle view