Fixed notifications for cancelled trips, and cleaned out old code that would invalidate and cancel the trip in progress when the home screen disappears.
Cleaned up home view controller and old icons. Added a non-retina version of the new icon.
Clean up
Added the remaining stops and neighborhoods
Bug fixes listed in detail, and some clean up. Closes #4

caclulateTime was being called twice in some cases when the origin or
destination had already been chosen.

Debug logs to verify trip accuracy

When starting the clock without stations chosen, if the origin has been
chosen, then it ask you only for the destination

Worked around the animation layout bug by calling endTrip before going
to pick origin or destination