Check that will replace the old feed address from config files

ComicRack/Program.cs

@@ -94,7 +94,9 @@ public bool PreFilterMessage(ref Message m)
 
         public const string DefaultNewsFeed = "https://github.com/maforget/ComicRackCE/commits.atom";
 
-		public const string DefaultUserForm = "https://github.com/maforget/ComicRackCE/discussions";
+		public const string OldDefaultNewsFeed = "http://feeds.feedburner.com/ComicRackNews";
+
+        public const string DefaultUserForm = "https://github.com/maforget/ComicRackCE/discussions";
 
 		public const string DefaultLocalizePage = "https://web.archive.org/web/20170528182733/http://comicrack.cyolito.com/faqs/12-how-to-create-language-packs";
 
@@ -871,6 +873,17 @@ private static void StartNew(string[] args)
 			{
 				News.Subscriptions.Add(new NewsStorage.Subscription(DefaultNewsFeed, "ComicRack News"));
 			}
+			else
+			{
+                //Because the default NewsFeeds.xml in the Data already as the old url inside it
+				var oldSub = News.Subscriptions.FirstOrDefault(x => x.Url == OldDefaultNewsFeed);
+                if (oldSub != null)
+				{
+					//Since the feeds doesn't match with the default url, we remove it, and add or new one.
+					News.Subscriptions.Remove(oldSub);
+                    News.Subscriptions.Add(new NewsStorage.Subscription(DefaultNewsFeed, "ComicRack News"));
+                }
+			}
 			StartupProgress(TR.Messages["CreateMainWindow", "Creating Main Window"], 50);
 			if (ExtendedSettings.DisableScriptOptimization)
 			{