optimizations
J3Cub: Parking brake on by default
J3Cub: Corrrect right strut damage logic
Metadata tags for Coanda 1910 and Ca-12 Boomerang
Alouette-III: change rope code from set/getprop to stored node reference pointers
Citation: repair and improve autostart.
Alouette-III: Rope code cleanup, bugfixes and documentation
Alouette-III: Dynamics for rope dragged over ground
Alouette-III: Another round of minor fixes
Alouette-III: Fix wrong animation reference
