- New class MainTableDataModel which holds all sorted and filtered lists plus sorting and filtering logic.
- If a search is still active while entering a new search term, the previous search is cancelled. This improves search time quite a lot.
- By filtering after the sorting, the search is extremely fast as the amount of sorting is reduced dramatically
- Using "filter" search should be now the fastest search, as no sorting has to take place

…now working again.

…ry quickly (5 sec vs. 60 sec for 40k entries)