Fix #214: sidebar menu and modal box
Fix #214: sidebar menu and modal box

Hide / Show sidebar menu when modal is opened / closed

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