Refresh with alerting sound
Refresh with alerting sound

- function playAlertSound moved from dashboard template
- improve refresh for dashboard
- improve refresh for dashboard currently
- play sound if problems number increased

vizvayu/mod-webui,shinken-monitoring/mod-webui,mohierf/mod-webui,shinken-monitoring/mod-webui,rednach/mod-webui,shinken-monitoring/mod-webui,mohierf/mod-webui,rednach/mod-webui,rednach/mod-webui,vizvayu/mod-webui,mohierf/mod-webui