Show reference column in myCRED Log

/**
 * Add Column Header
 * Add in the custom log column header on the main log page in the
 * admin area.
 * @version 1.0
 */
add_filter( 'mycred_log_column_headers', 'mycred_pro_admin_log_columns', 10, 2 );
function mycred_pro_admin_log_columns( $columns, $module ) {

    // Only appliable for admin area
    if ( ( defined( 'DOING_AJAX' ) && DOING_AJAX ) || ! is_admin() ) return $columns;

    // Only applicable for myCRED Log page and not personal log
    if ( isset( $module->args['ctype'] ) && isset( $_GET['page'] ) && $_GET['page'] != $module->args['ctype'] . '_history' )
        $columns['column-ref'] = 'Reference';

    return $columns;

}

/**
 * Render Ref Column
 * Renders the result of the reference column.
 * @version 1.0
 */
add_filter( 'mycred_log_column-ref', 'mycred_pro_custom_log_column', 10, 2 );
function mycred_pro_custom_log_column( $content, $entry ) {

    $refs = mycred_get_all_references();
    if ( isset( $refs[ $entry->ref ] ) )
        return $refs[ $entry->ref ];

    return $entry->ref;

}