add raw_id fields for tournament

tournaments/admin.py

@@ -93,6 +93,7 @@ class TournamentAdmin(SyncedObjectAdmin):
     list_filter = [StartDateRangeFilter, 'is_deleted', 'event__creator']
     ordering = ['-start_date']
     search_fields = ['id', 'federal_level_category']
+    raw_id_fields = ['last_updated_by', 'event']
 
     def dashboard_view(self, request):
         """Tournament dashboard view with comprehensive statistics"""