Extend the Export Log

[patrickposner]

We should improve the Export log with the following:

sorting by status code and URL
a search field to search for URLs + patterns
an export button to export the log as CSV
All that is offered by the package we are using right now: https://react-data-table-component.netlify.app/?path=/docs/examples-filtering--filtering

[igorbenic]

@patrickposner a question on how to approach this.

Should we pull the whole export log right from the start?
Pro: sorting, filtering done right away, no fetch needed.
Con: Due to export log being constantly filled, when sorting/filtering might change the data while browsing. Potential fix to this: disable the log (sorting, export CSV and such) until the whole export is done.

Currently, we fetch on request (pagination and such).

[patrickposner]

I would say we show the additional actions (search, sorting, export) only if the export is done and keep the current implementation where we constantly fetch the log.