Fixed a NPE when creating your first tour.
Dropped the (outdated) E6 notation for latitude/longitude.
Location stamps now store the Altitude value.
Update LocationStamps to store the speed as m/s.
Removed the name from the Tour-object.
Added the new location and tour-type information to the tour.
Finished the database update and made it persistent.
Created a Settings-Activity to switch between metric and imperial system.
The statistics now use the measure-system set in the application-preferences.
Better title and description for measurement-system preference.
Removed the "New Tour"-dialog and the rename-option.
TourActivity is now the starting-place for new tours.
Fixed a bug that caused calculations of speed and distance to be wrong.
The ToursLoader is not notified when the underlying data changes, so it can reload.