Rubenz: disable AJAX navigation in/out blog

function arts_is_blog_page() {
  global $post;

  // Post type must be 'post'.
  $post_type = get_post_type( $post );

  // Check all blog-related conditional tags, as well as the current post type,
  // to determine if we're viewing a blog page.
  return (
      ( is_home() || is_archive() || is_single() )
      && ( $post_type == 'post' )
  ) ? true : false;
}

add_filter( 'body_class', 'arts_add_no_ajax_blog_classes' );
function arts_add_no_ajax_blog_classes( $classes ) {
  $body_classes = array( 'page-no-ajax', 'no-ajax' );

  if ( arts_is_blog_page() ) {
    $classes = array_merge( $classes, $body_classes );
  }

  return $classes;
}