Merge pull request #440 in VECTO/vecto-sim from ~EMQUARIMA/vecto-sim:develop to develop

* commit '13cc714d':
  write name of fuel type into json files
  fix: fuel type has no density; fix: time share per gear
  bugfix: output in vsum file if no fueldensity is available
  adapt testcase due to changes in fuel types
  correction of fuel properties
  extending driver strategy to handle unexpected responses
  handle the case when no vehicle idle speed is given
  update generic vehicles to match new file formats
  updating repo
  including xsd in project
  renaming files