Refactoring: reordered various private members of the FrmUpdate class…

… and updated inline documentation.

src/srcrepair/FrmUpdate.cs

@@ -34,14 +34,14 @@ public partial class FrmUpdate : Form
         private readonly string UserAgent;
 
         /// <summary>
-        /// Stores the full path to the local updates directory.
+        /// Stores full path to the application installation directory.
         /// </summary>
-        private readonly string AppUpdateDir;
+        private readonly string FullAppPath;
 
         /// <summary>
-        /// Stores the application installation directory.
+        /// Stores the full path to the local updates directory.
         /// </summary>
-        private readonly string FullAppPath;
+        private readonly string AppUpdateDir;
 
         /// <summary>
         /// Stores an instance of the UpdateManager class for working