Fix: try to fix regression, stored the last id created in a session

variable in order to be used to find out information in the "ref_ext" in
order to differentiate automatic actions.

htdocs/core/triggers/interface_50_modAgenda_ActionsAuto.class.php

@@ -583,6 +583,7 @@ class InterfaceActionsAuto
 			$ret=$actioncomm->add($user);       // User qui saisit l'action
 			if ($ret > 0)
 			{
+				$_SESSION['LAST_ACTION_CREATED'] = $ret;
 				return 1;
 			}
 			else