"Real" pagination for index tables

[donni106]

Currently we use JS DataTables to create index tables with pagination. Therefore all data is loaded and rendered when visiting the page and then per JS restructured. This leads to immens load times for large amounts of data.
We need a real pagination here for requesting just parts of data that is shown.

With changing pagination, we also need to check, if DataTable is still beneficial for us in terms of sorting and searching, or if we need to refactor the search for example as well.