Support for filtering data while importing CSV file

[bahaaldine]

While using the CSV import feature I often fall in the scenario of having to remove some of the columns directly in the CSV file before importing it.

I think it would be useful to let the user decide which column he wants to import.

In term of UX, it could be a checkbox next to each column as the following screenshot shows:

All column are selected by default.

[Bargs]

This is another problem that will be solved when ingest pipelines land. I'll keep this ticket open though, if ingest pipelines end up getting delayed further it wouldn't be too hard to add support for this in the CSV wizard itself.

[epixa]

I'm going to close this since CSV upload was pulled. We can always refer back to this issue if/when we revisit the feature.