- Sound?
- Start the counter when the lid gets closed
  (and change the explanatory text to match)
  This means having a inhibitor on suspend on lid before we get started though
- Implement awful performance:
  https://raw.github.com/gnome-design-team/gnome-mockups/master/office-runner/finished-norecord.png
- Add performance graph to results
- Add app-menu to reset the results

Known bugs (aka, can I be bothered?)
- saving the date/time as a string means it won't get
  retranslated if we switch languages