Add official fixings to Waterlevel CSV Export (issue1384) This searches the collection for staticwqkms artifacts that contain official data and adds that data to the export. The data is filtered by the calculation range and sorted by the calculation direction.

select.abflusstafel = \
    SELECT ABFLUSSTAFEL_NR, \
           ABFLUSSTAFEL_BEZ, \
           GUELTIG_VON, \
           GUELTIG_BIS, \
           PEGELNULLPUNKT, \
           AT.BFG_ID \
    FROM ABFLUSSTAFEL AT \
    WHERE MESSSTELLE_NR LIKE :number