Pull request #859: Bugfix/VECTO-1439 error running job

Merge in VECTO/vecto-sim from VECTO/mq_vecto-sim:bugfix/VECTO-1439-error-running-job to develop

* commit '4d40cdbd':
  engine FLD: avoid duplicate entries if intersection falls at second grid point
  intersect engine FLD: only add intersection point if it is not already part of the entries.