[AWS] De-activate Cache in web browser stuff again

[David Marceau]

> >but it is probably better to add
> >header('Cache-control: no-cache');
> >header('Pragma: no-cache');
> >to the php
> 
> Or for completeness, include the whole set:
> 
> header("Content-type: application/x-www-urlformencoded");
> header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
> header("Expires " . gmdate("D, d M Y H:i:s") . " GMT");
> header("Cache-Control: no-cache, must-revalidate");
> header("Pragma: no-cache");
> 

Again this stuff was just copied over from the ming mailing list. 

Cheers,
David Marceau