Fix saving of BulkReExport permission to database.

BulkPrintingAPI/Controllers/Utils.cs

                 existingUser.BulkOrder = user.BulkOrder;
                 existingUser.BulkOrderMaxValue = user.BulkOrderMaxValue;
                 existingUser.BulkViewPins = user.BulkViewPins;
+                existingUser.BulkReExport = user.BulkReExport;
 
                 user = existingUser;
             }