fixed bugs:

- suppressed display of search results if nothing was found but there were previous searches
- improved display timing of search results/initial pages, which led to false displays

src/main/resources/static/main.js

@@ -47,10 +47,10 @@ searchButton.addEventListener("click", () => {
 });
 
 searchBar.addEventListener("input", () => {
-    updateSections();
     clearTimeout(searchBarTimeout);
     searchBarTimeout = setTimeout(() => {
         fetchQuery(createQuery(), true);
+        updateSections();
     }, searchDelay);
 });