*
* - applySort($au, $sortcol, $direction)
* - applyFilters($_REQUEST, $authUser) -- apply any query filters on data. and hide stuff not to be seen.
- * - postListExtra - add extra column data on the results (like new messages etc.)
+ * - postListExtra($_REQUEST) : array(extra_data) - add extra column data on the results (like new messages etc.)
* - postListFilter($data, $authUser, $request) return $data - add extra data to an object
*
* - toRooSingleArray($authUser, $request) // single fetch, add data..