Updating xhr request

* Querying when request has failed
* Added a maximum consecutive query parameter to limit query when server
has shutdown
* By default I've put it to -1 (no maximum), it can be modified
* Stopping with an error when too many failed query
* Removing log message in torrents.js

public/js/query.js

@@ -1,4 +1,6 @@
 var Query = {
+    Failed:0,
+    MaxConsecutingFailing:-1,
     Get: function(url, renderer, callback) {
         var xhr = new XMLHttpRequest();
         console.log(url)
@@ -6,8 +8,15 @@ var Query = {
         xhr.responseType = 'json';
         xhr.onload = function(e) {
             if (this.status == 200) {
+                Query.Failed = 0;
                 renderer(this.response);
-                callback(this.response)
+                callback(this.response);
+            } else {
+                console.log("Error when refresh")
+                Query.Failed++;
+                console.log("Attempt to refresh "+Query.Failed+"...");
+                if ((Query.MaxConsecutingFailing == -1) || (Query.Failed < Query.MaxConsecutingFailing)) Query.Get();
+                else console.error("Too many attempts, stopping...")
             }
         };
         xhr.send();

public/js/torrents.js

@@ -12,7 +12,6 @@ var Torrents = {
     },
     Refresh: function() {
         if (this.CanRefresh) {
-            console.log("Start Refresh...")
             this.timeout = setTimeout(function() {
                 var searchArgs = (window.location.search != "") ? window.location.search.substr(1) : ""
                 searchArgs = (Torrents.LastID > 0) ? "?fromID="+Torrents.LastID+"&"+searchArgs : "?"+searchArgs