bugfix: revert commit 63d498 for parsing json data

VectoCore/VectoCore/InputData/FileIO/JSON/JSONVehicleData.cs

@@ -57,7 +57,7 @@ namespace TUGraz.VectoCore.InputData.FileIO.JSON
 		public override PredictiveCruiseControlType PredictiveCruiseControl
 		{
 			get {
-				return PredictiveCruiseControlTypeHelper.Parse(Body.GetEx<string>("PredictiveCruiseControl"));
+				return Body.GetEx<string>("PredictiveCruiseControl").ParseEnum<PredictiveCruiseControlType>();
 			}
 		}