Fixed bug on deleting a service with unread messages

The global counter was not clearing.

app/ux/WebView.js

@@ -125,6 +125,7 @@ Ext.define('Rambox.ux.WebView',{
 			}
 			,listeners: {
 				 afterrender: me.onAfterRender
+				,beforedestroy: me.onBeforeDestroy
 			}
 		});
 
@@ -139,6 +140,12 @@ Ext.define('Rambox.ux.WebView',{
 		me.callParent(config);
 	}
 
+	,onBeforeDestroy: function() {
+		var me = this;
+
+		me.setUnreadCount(0);
+	}
+
 	,webViewConstructor: function( enabled ) {
 		var me = this;