Adapted to Magnum changes.
Updated FindMagnum.cmake from Mangum repository.
prototypes: adapted to Magnum::Shapes changes.
prototypes: attempt to solve unrecoverable penetration issues.

Moved related code to globalPhysicsStep(), binary computing of TOI.
Doesn't help much, problem is probably also somewhere else. Sometimes
when the vehicle hits the wall it is not pushed back but stays glued to
it and starts sliding along it (like if the impulse was in wrong
direction).