issue #2560 action select in the selection mode, show in gallery on several people

ws.php

@@ -1770,6 +1770,8 @@ enabled_high, registration_date, registration_date_string, registration_date_sin
       array(
         'person_id' => array(
           'type' => WS_TYPE_ID,
+          'flags' => WS_PARAM_FORCE_ARRAY,
+          'info' => 'several ids only for is_visible and source',
         ),
         'name' => array(
           'flags' => WS_PARAM_OPTIONAL,