Tweak calendar z-index and uncomment type filters

core/templates/ui/drilldown/drilldown.html

@@ -318,6 +318,7 @@
                       "startTime": "{{ params.from_time|escapejs }}",
                       "endDate": "{{ params.to_date|escapejs }}",
                       "endTime": "{{ params.to_time|escapejs }}",
+                      "displayMode": "dialog"
                     };
                     // Initialize all input of type date
                     var calendars = bulmaCalendar.attach('[type="date"]', options);