frontend: when the filter changes, the list of lexemes in the sidebar should go back to page 1
We need to think a little more about the interaction between the sidebar and the ResultTable in the main content frame.
E.g., when I go to second page of the lexeme listing in the sidebar, the ResultTable does not update until I click on a particular lexeme:
When I then enter a new query, the sidebar stays on "page 2", even though now the list of lexemes is only one page long.
