Pull request #201: Develop

Merge in VECTO/vecto-dev from VECTO/mk_vecto-dev:develop to develop

* commit '34e5afea':
  VectoRunData: reformulated error message for P0
  PowertrainBuilder and PowertrainPosition: reformulated error message
  JSONFileWriter: Added check for APT-N Gearbox to not access TorqueConverter Data
  TorqueConverter: Initialize: When no operating point was found only write a Log.Warn if outTorque and speed are not zero. Otherwise write a Log.Info.
  PowertrainBuilder and GUI: Removed P0 in Dropdown and throw exception if P0 is defined in file.