Bug 34788: Allow import of file with additional columns

Bug 34788: Allow import of file with additional columns

This patch allows a file with additional columns to be imported. When the file is submitted, the system will enqueue the background job and send back information to the UI that certain columns have been ignored. The data will stil l import as normal but only the standard KBART columns will be parsed and imported

Signed-off-by: Clemens Tubach <clemens.tubach@kit.edu>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>