Fleiding

I think i found a solution.

Just placed this code in my functions.php and it seems to work:

add_filter( 'tablepress_table_render_options', 'tablepress_override_table_options', 10, 2 );
function tablepress_override_table_options( $render_options, $table ) {
  $render_options['use_datatables'] = false;
  $render_options['alternating_row_colors'] = false;
return $render_options;
}

Resolved it with this plugin:

http://wordpress.org/extend/plugins/tablepress/

I am currently writing a few new articles in which I need the borders.