Proposal for silent failure validation
Update taking care or comment + replicated to other vehicles types
Have xPDOVehicle validators fail silently unless verbose enabled

Merge remote-tracking branch 'origin/pr/26' into develop

* origin/pr/26:
  Update taking care or comment + replicated to other vehicles types
  Proposal for silent failure validation
Merge remote-tracking branch 'xpdo/develop' into develop

* xpdo/develop:
  Update taking care or comment + replicated to other vehicles types
  Proposal for silent failure validation