IT FRESH-699

#27 Support for custom order bys in browseView

Testcase to check if the order by for custom orders is working in browsView.

1. Open WebUI

2. Go to Aufträge

3. Order by overall sum, descending:
   • => orders get sorted by overall sum
4. Flip through the pages, jump back and forth:
   • => sorting is kept correctly, ordered by overall sum, descending, no matter which page you flipped / jumped to
5. Try with ordering by Bereitstellungsdatum ascending:
   • => orders get sorted by Bereitstellungsdatum ascending
6. Flip through the pages, jump back and forth:
   • => sorting is kept correctly, ordered by Bereitstellungsdatum ascending, no matter which page you flipped / jumped to