delete fixedRowsTop option

src/client/js/components/PageEditor/HandsontableModal.jsx

@@ -22,7 +22,6 @@ export default class HandsontableModal extends React.Component {
       height: 300,
       rowHeaders: true,
       colHeaders: true,
-      fixedRowsTop: [0, 1],
       contextMenu: ['row_above', 'row_below', 'col_left', 'col_right', '---------', 'remove_row', 'remove_col', '---------', 'alignment'],
       stretchH: 'all',
       selectionMode: 'multiple',