* Uses these methods of the dataobjects:
* - checkPerm('L'/'E'/'A', $authuser) - can we list the stuff
*
- * - applySort($au, $sortcol, $direction)
+ * - applySort($au, $sortcol, $direction) -- return false to let system do default sort code.
* - applyFilters($_REQUEST, $authUser) -- apply any query filters on data. and hide stuff not to be seen.
* - postListExtra($_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