Cleaned up the table trimming methods. Group creation now proper marks rows as dirty when row attribute changes. Projections table processes successfully on the new modify record form.

AdvertsingProfitControl/DbWriterStatus.cs

@@ -9,6 +9,7 @@ namespace AdvertsingProfitControl
     internal class DbWriterStatus
     {
         public string ErrorMessage;
+        public string Message;
         public int Id;
         public WritingOperationStatus Status;
     }