Alpha Section Island 0.7.1

Added mandatory waypoints for the navigation arrows
Straightened some roads

Thanks to @thomatoes50 for letting me know how to tell the nav arrows to follow waypoints between stops.

https://www.beamng.com/threads/waypoints-in-bus-routes.55806/#post-886516

I need to do a big detail pass on this map but it will have to wait another week (or 2 as the update is next week).