Adding changes to make the installer not overwrite appsettings.json upon update.

Author: renemadsen

eFormAPI/Installation/CustomActions/CustomAction.cs

@@ -1041,6 +1041,9 @@ private static void DirectoryCopy(string sourceDirName, string destDirName, bool
                 if (file.Name.Equals("Web.config", StringComparison.InvariantCultureIgnoreCase) && File.Exists(temppath))
                     continue;
 
+                if (file.Name.Equals("appsettings.json", StringComparison.InvariantCultureIgnoreCase) && File.Exists(temppath))
+                    continue;
+
                 if (File.Exists(temppath) && !overrideFile)
                     continue;