Processes the content of the tag-body if the registerd
Principal Objekt has the demanded permission.
Process the tag-body only if the user loged in is in role
administrator or developer.
<%@ taglib uri="http://www.common-controls.com/cc/tags-sec" prefix="sec" %>
<sec:granted permission="#admin;#developer">
This User has the admin- or developer Role.
</sec:granted>