Overviews: Load more data
Overviews display the top 10 Hits, "Other" and "Missing":
Users are interested in seeing what hides under "Other". Clicking the label "Other" should load additional 20 records from ES, now displaying 30 entries, including "Other" (if any) and "Missing" (if any). Again, if "Other" records are still present, load another 20 (to show 50 "Hits"), and so on.
This should affect only the selected category.