Pull request #219: Feature/VECTO-1594 adding pto drag losses for pev

Merge in VECTO/vecto-dev from VECTO/mq_vecto-dev:feature/VECTO-1594-adding-pto-drag-losses-for-pev to develop

* commit 'a56aa5a7':
  update XML Schema to allow WHTC correction factors <1 (but has to be >0)
  PTO for S2 hbrids works
  adding testcase for S2 with PTO
  adding pto component for E2 vehicles: powertrain builder, data adapter, new component
  adding missing file, adding generic E2 with PTO
  saving PTO info for PEV vehicles
  adding testcase for E2 vehicle with PTO
  updating power losses for PTOs, extending PTO table by torque loss for E2 and S2