Handle paths in template names
Handle paths in template names

Now works for:
new SimpleSAML_XHTML_Template($globalConfig, 'saml:sp/wrong_authncontextclassref.tpl.php');

dnmvisser/simplesamlphp,jschlyter/simplesamlphp,dnmvisser/simplesamlphp,jschlyter/simplesamlphp,dnmvisser/simplesamlphp,simplesamlphp/simplesamlphp,jschlyter/simplesamlphp,simplesamlphp/simplesamlphp,sitya/simplesamlphp,ghalse/simplesamlphp,sitya/simplesamlphp,sitya/simplesamlphp,jschlyter/simplesamlphp,jschlyter/simplesamlphp,ghalse/simplesamlphp,simplesamlphp/simplesamlphp,dnmvisser/simplesamlphp,ghalse/simplesamlphp,sitya/simplesamlphp,ghalse/simplesamlphp,simplesamlphp/simplesamlphp