增加连接串加密，粤北安装版本封存

HT.Cloud.Code/Model/SystemConfig.cs

@@ -9,6 +9,11 @@ namespace HT.Cloud.Code.Model
 		/// </summary>
 		public bool Demo { get; set; }
 
+		/// <summary>
+		/// 系统备注
+		/// </summary>
+		public string GroupDescription { get; set; }
+
 		/// <summary>
 		/// 是否是调试模式
 		/// </summary>
@@ -25,7 +30,7 @@ namespace HT.Cloud.Code.Model
 		public string AllowCorsSite { get; set; }
 
 		public string DBProvider { get; set; }
-		public string DBConnectionString { get; set; }
+		public string DBConnectionString{ get; set; }
 		public int DBCommandTimeout { get; set; }
 
 		public string CacheProvider { get; set; }