Transit Index

This pull request adds two REST endpoints to the Transit Index API:
1. tripTimes, for the a representation of TripTimes objects in the form of Place objects (as if it were a list of intermediate stops).
2. stopTimesForStation, which is essentially a wrapper around stopTimesForStop for all the stops connected to a parent station.

Additionally, some bugs were fixed and a a license notice was added to a few test files (including new ones) that lacked it.