Add delay before showing backend connection lost

src/UI/Shared/SignalRBroadcaster.js

@@ -29,6 +29,7 @@ define(
 
                 var tryingToReconnect = false;
                 var messengerId = 'signalR';
+                var reconnectTimeout;
 
                 this.signalRconnection = $.connection('/signalr');
 
@@ -47,15 +48,18 @@ define(
 
                     tryingToReconnect = true;
 
-                    Messenger.show({
-                        id        : messengerId,
-                        type      : 'info',
-                        hideAfter : 0,
-                        message   : 'Connection to backend lost, attempting to reconnect'
-                    });
+                    reconnectTimeout = window.setTimeout(function () {
+                        Messenger.show({
+                            id        : messengerId,
+                            type      : 'info',
+                            hideAfter : 0,
+                            message   : 'Connection to backend lost, attempting to reconnect'
+                        });
+                    }, 10000);
                 });
 
                 this.signalRconnection.reconnected(function() {
+                    window.clearTimeout(reconnectTimeout);
                     tryingToReconnect = false;
 
                     var currentVersion = StatusModel.get('version');