issue #1953 improved privacy on searches and associate each search to its creator

* remove temporary functions ws_gallery_getSearch and ws_gallery_updateSearch
* split get_search_array into sub-functions to use them in web API
* use search_uuid as search_id instead of the numeric search.id : better privacy
* only the creator of the search can update it
* if a visitors tries to open the search of another user, it (the search) gets forked into a new search

include/section_init.inc.php

@@ -362,6 +362,7 @@ else
     include_once( PHPWG_ROOT_PATH .'include/functions_search.inc.php' );
 
     $search_result = get_search_results($page['search'], @$page['super_order_by'] );
+
     //save the details of the query search
     if ( isset($search_result['qs']) )
     {