Pull request #314: Feature/VECTO-1731 declaration mode xev primary bus

Merge in VECTO/vecto-dev from VECTO/mq_vecto-dev:feature/VECTO-1731-declaration-mode-xev-primary-bus to develop

* commit '895c504e':
  adding fallback search in case the interpolate search finds an invalid ICE operating point
  serial hybrid strategy: use next gear in case gearbox is disengaged
  fixed IEPC and IHPC mockup runs
  inject IDeclarationCyclefactory into VectoMockupRunDataFactoryFactory
  error message in case no primary result can be found. extend results in VIF used for testcase
  added S2-HEV vif
  only calculate fuel factor (completed bus) if there are fuels in the primary bus - i.e. don't calculate for PEV
  override checking gears method for IEPC
  remove xml element in vif that's not allowed for PEV
  remove line with no contents
  updated user manual