move the following to Article:

move the following to Article:

+       static function format_article_enclosures($id, $always_display_enclosures,
+       static function format_article($id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
+       static function get_article_tags($id, $owner_uid = 0, $tag_cache = false) {
+       static function format_tags_string($tags) {
+       static function format_article_labels($labels) {
+       static function format_article_note($id, $note, $allow_edit = true) {
+       static function get_article_enclosures($id) {