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.