Fix #42 - sortable column must be named position

Resources/views/CRUD/edit_orm_one_to_many.html.twig

@@ -107,14 +107,14 @@ file that was distributed with this source code.
 
                     function apply_position_value_{{ id }}() {
                         // update the input value position
-                        jQuery('div#field_container_{{ id }} tbody.sonata-ba-tbody td.sonata-ba-td-{{ id }}-position').each(function(index, element) {
+                        jQuery('div#field_container_{{ id }} tbody.sonata-ba-tbody td.sonata-ba-td-{{ id }}-{{ sonata_admin.field_description.options.sortable }}').each(function(index, element) {
                             // remove the sortable handler and put it back
                             jQuery('span.sonata-ba-sortable-handler', element).remove();
                             jQuery(element).append('<span class="sonata-ba-sortable-handler ui-icon ui-icon-grip-solid-horizontal"></span>');
                             jQuery('input', element).hide();
                         });
 
-                        jQuery('div#field_container_{{ id }} tbody.sonata-ba-tbody td.sonata-ba-td-{{ id }}-position input').each(function(index, value) {
+                        jQuery('div#field_container_{{ id }} tbody.sonata-ba-tbody td.sonata-ba-td-{{ id }}-{{ sonata_admin.field_description.options.sortable }} input').each(function(index, value) {
                             jQuery(value).val(index + 1);
                         });
                     }