Is there a way to have Recent discussions widget to refresh itself every x seconds?
Right now the changes in the discussions don't reflect on the widget unless the user reloads the whole page.
That code is on the server side and you'd need to do the refresh from the client side. That would involve some significant work in the widget.
I think following lines from widgets.php controls the latest discussions.
Is there a way to add an interval to this?
// Retrieve the latest discussions from the Vanilla API
$resturl = vf_combine_paths($resturl, '/');
$data = json_decode(vf_rest($resturl));