UpdateQueue: add callback

So that we can queue new things after loading is done.

www/manager/data/UpdateQueue.js

@@ -15,30 +15,40 @@ Ext.define('PVE.data.UpdateQueue', {
 		return;
 	    }
 
-	    var store = queue.shift();
-	    if (!store) {
+	    var storeid = queue.shift();
+	    if (!storeid) {
 		return;
 	    }
+	    var info = queue_idx[storeid];
+	    queue_idx[storeid] = null;
 
-	    queue_idx[store.storeid] = null;
+	    info.updatestart = new Date();
 
 	    idle = false;
-	    store.load({
+	    info.store.load({
 		callback: function(records, operation, success) {
 		    idle = true;
+		    if (info.callback) {
+			var runtime = (new Date()).getTime() - info.updatestart.getTime();
+			info.callback(runtime, success);
+		    }
 		    start_update();
 		}
 	    });
 	};
 
 	Ext.apply(me, {
-	    queue: function(store) {
-		if (!store.storeid) {
+	    queue: function(store, cb) {
+		var storeid = store.storeid;
+		if (!storeid) {
 		    throw "unable to queue store without storeid";
 		}
-		if (!queue_idx[store.storeid]) {
-		    queue_idx[store.storeid] = store;
-		    queue.push(store);
+		if (!queue_idx[storeid]) {
+		    queue_idx[storeid] = {
+			store: store,
+			callback: cb
+		    };
+		    queue.push(storeid);
 		}
 		start_update();
 	    }

www/manager/data/UpdateStore.js

@@ -18,8 +18,9 @@ Ext.define('PVE.data.UpdateStore', {
 
 	var run_load_task = function() {
 	    if (PVE.Utils.authOK()) {
-		PVE.data.UpdateQueue.queue(me);
-		load_task.delay(config.interval, run_load_task);
+		PVE.data.UpdateQueue.queue(me, function(runtime, success) {
+		    load_task.delay(config.interval, run_load_task);
+		});
 	    } else {
 		load_task.delay(200, run_load_task);
 	    }