fix(webservice): Do not bypass ACL when listing objects

The ls method of the webservice was bypassing ACLs and returning too
 much data.
The count method is still bypassing ACL but I can’t decide if this
 should be fixed or not (and how)

issue #5704

webservice/html/jsonrpc.php

@@ -193,7 +193,7 @@ class fdRPCService
   protected function _ls ($type, $attrs = NULL, $ou = NULL, $filter = '')
   {
     $this->checkAccess($type);
-    return objects::ls($type, $attrs, $ou, $filter);
+    return objects::ls($type, $attrs, $ou, $filter, TRUE);
   }
 
   /*!