Break out Fleet section stats for Model 3

All pages in the Fleet section should break out stats for Model 3.  Leaderboard should have a Model 3 only page.  Firmware stats should be separate for Model 3.  And the Statistics page should have a filter to show only specific models.  Map of location for only Model 3 cars would show the spread of deliveries around the world.  Will be useful as new models roll out in future years, too.