skip validation of shift polygons for AT gearboxes

VECTO/GUI/GearboxForm.vb

VECTO/GUI/GearboxGearDialog.vb

VECTO/GUI/VehicleAxleDialog.vb

VECTO/Input Files/Engine.vb

VECTO/Input Files/Gearbox.vb

VECTO/Input Files/VectoJob.vb

VECTO/Input Files/Vehicle.vb

VECTO/VECTO.vbproj

VECTO/VECTO.vbproj.user

VectoCommon/VectoCommon/Utils/Validation.cs

...Core/VectoCore/Models/Simulation/Impl/SimulatorFactory.cs

...oCore/Models/SimulationComponent/Data/Gearbox/GearData.cs

...e/Models/SimulationComponent/Data/Gearbox/ShiftPolygon.cs

.../VectoCore/Models/SimulationComponent/Data/GearboxData.cs

...odels/SimulationComponent/Data/SimulationComponentData.cs

...e/VectoCoreTest/Models/SimulationComponent/GearboxTest.cs

...CoreTest/Models/SimulationComponentData/ValidationTest.cs