new start values for point count for every vehicle
- tracking multiple vehicle works again

TODO:
 - print icon to represent current vehicle (long,lat,yaw)
 - center vehicle
 - export png, avi
 - save/replay
Merge branch 'hotfix/broken_drawing_1'
Merge branch 'hotfix/broken_drawing_1' into develop
Merge branch 'release/0.0.2'