Vehicle damage curve needs 0 stage to be ground instead of first floor

[BrittCorley]

When using the vehicle value feature in the structure inventory, the vehicle's damage curve is associated with the first floor elevation of the structure it belongs to. Currently in 1.4.3 we create a new inventory for vehicles where we have the foundation set to 0 so the first floor is the ground.

Suggest either removing the ability to add a vehicle value into the structure record so the user has to create a separate inventory or make an alteration for the begin damage point for just the vehicle.

This is also true when using the other category for emergency or debris damages and would apply to that situation as well.

[BrittCorley]

@rnugent3 I think I need to be added as a contributor before I can assign people and labels

[Brennan1994]

This is consistent with the old behavior. Agreed that we should do a better job in 2.0.