Merge pull request #182 in VECTO/vecto-sim from...

Merge pull request #182 in VECTO/vecto-sim from ~EMQUARIMA/vecto-sim:hotfix/VECTO-270-input-data-parsing-not-language to develop

* commit 'b218afd4':
  final fixes
  keep liter as separate (basic) unit (don't convert to cubic meter)
  use SI class also for Signals
  make tests ress strict
  use si unit also for vectoInput class, fix in SI class (cast)
  fix: error in testcase: 780kg fuel consumption at  0.93l fuel consumption!
  adapt advanced auxiliaries: remove Gram class -> use kg
  remove 'duplicate' si classses (kg - g)
  adapt vecto and vectoCore (bus aux adapter) to chanes in advanced auxiliaries
  adding some more SI units (some of those temporarily)
  nunit
  adapt interface to use SI class (and switch to double otherwise)
  move VectoMath to comon project
  adapt project settings
  adapt aux tests due to switch to SI-class
  switch advanced auxiliaries to SI-class
  code formatting
  substitute cast, use culture-independent parsing
  code formatting
  code formatting