Added speedprofile and speedfactor to vehicledata. This should be defined in the vehicle instead of the routing problem settings, but when sending vehicles without speedprofile and speedfactor NFleet-API sets them to the values specified in the routing problem settings.
If not specified the default values are Max100Kmh and 0.9.
Updated TestData to use the TestHelpers create-methods.
Fixed tests.
Made it so that tests create new user every time.
Changed SpeedProfile field type to String from the SDK's own enum
Implementing Delete-verb caused some peculiar problems. Having done a delete call the next call would fail. It seemed to have something to do with connection reuse. This fixed it.
Added support for DELETE verb.
Added tests for deleting one task and deleting all tasks from problem