Renamed a lot of variables.

- in the XML parsing, renamed 'times' to 'predictions'
- in make and update chart, renamed 'stop' and 'route' to 'stopTag' and 'routeTag'
  for consistency across files
- beginning to implement a bookmarking option. serialise/deserialise
Successfully change forms via command line.
Refactored updateChart.

Moved the title compiler and form updater to helper functions.
Bookmarkable works for single routes. Multiple routes need major refactor.
Separated model / view in d3 file (cleaned up a lot).

Bookmarkable link now works for multiple stops.
Gave shoutout to Ben Alman for deparam.