move the following to Feeds:

move the following to Feeds:

+       static function catchup_feed($feed, $cat_view, $owner_uid = false, $mode = 'all', $search = false) {
+       static function getFeedArticles($feed, $is_cat = false, $unread_only = false,
+       static function subscribe_to_feed($url, $cat_id = 0,
+       static function getFeedIcon($id) {
+       static function getFeedTitle($id, $cat = false) {
+       static function getCategoryUnread($cat, $owner_uid = false) {
+       static function getCategoryChildrenUnread($cat, $owner_uid = false) {