Better sorting of presentations and session files. Slight style changes.

src/routes/events/[event_id]/(launcher)/launcher_session_view.svelte

@@ -56,7 +56,9 @@ let lq__event_file_obj_li = liveQuery(
         // .where('event_session_id_random')
         .where('for_id_random')
         .equals($events_slct.event_session_id)
-        .sortBy('filename')
+        .reverse() // Need reverse for created_on newest first.
+        .sortBy('created_on') // or filename
+
 );
 
 // Does not refresh when the event_file_id_li_json changes.
@@ -73,10 +75,14 @@ let lq__event_file_obj_li = liveQuery(
 // );
 
 $: lq__event_presentation_obj_li = liveQuery(async () => {
+    let sort_by = 'start_datetime';
+    if ($lq__event_session_obj.type_code == 'poster') {
+        sort_by = 'name';
+    }
     let results = await db_events.presentations
         .where('event_session_id_random')
         .equals($events_slct.event_session_id)
-        .sortBy('start_datetime');
+        .sortBy(sort_by);
         // .sortBy('name')
 
     return results;