Re-implemented DynamicGrid.ConfigureColumns

prs.desktop/Panels/Products/Master List/ProductSuppliersControl.cs

@@ -34,7 +34,7 @@ namespace PRSDesktop
             options.SelectColumns = true;
         }
 
-        public override void ConfigureColumns(DynamicGridColumns columns)
+        protected override void ConfigureColumns(DynamicGridColumns columns)
         {
             base.ConfigureColumns(columns);
             var editor = columns

prs.desktop/Panels/PurchaseOrders/SupplierPurchaseOrderItemOneToMany.cs

@@ -652,7 +652,7 @@ public class SupplierPurchaseOrderItemOneToMany : DynamicOneToManyGrid<PurchaseO
         }
     }
     
-    public override void ConfigureColumns(DynamicGridColumns columns)
+    protected override void ConfigureColumns(DynamicGridColumns columns)
     {
         base.ConfigureColumns(columns);
         var editor = columns

prs.desktop/Panels/Suppliers/Bills/SupplierBillLineGrid.cs

@@ -201,7 +201,7 @@ public class SupplierBillLineGrid : DynamicOneToManyGrid<Bill, BillLine>
             return base.GenerateColumns();
         }
     }
-    public override void ConfigureColumns(DynamicGridColumns columns)
+    protected override void ConfigureColumns(DynamicGridColumns columns)
     {
         base.ConfigureColumns(columns);
         var editor = columns

prs.desktop/Panels/Suppliers/SupplierProductGrid.cs

@@ -212,7 +212,7 @@ namespace PRSDesktop
             return result;
         }
 
-        public override void ConfigureColumns(DynamicGridColumns columns)
+        protected override void ConfigureColumns(DynamicGridColumns columns)
         {
             base.ConfigureColumns(columns);
             var editor = columns