修复调试代码引起的白屏问题

fis/ShellConfig.cs

@@ -14,7 +14,7 @@ namespace fis
         public int windowsNum = 0;
 
         //Gets or sets the app host which is the web App's access url
-        public string AppHost { get; set; } = "127.0.0.1:8080";
+        public string AppHost { get; set; } = "app.fis.plus";
 
         /// <summary>
         /// 模板设计器