Hot fix for template for staging

Starting to get the production environment together, so some hot fixes
are needed to the index template that haven't been accouted for yet.

This one was updating the index template to use the new render class
when login fails

templates/back/index.twig

@@ -17,9 +17,9 @@
 		{% else %}
 			<section role="den-login">
 				<h1>This is the Den</h1><br/>
-				{% if notice is defined %}
+				{% if options.notice is defined %}
 					<div role="system-notice">
-						{{ notice }}
+						{{ options.notice }}
 					</div>
 				{% endif %}
 				{{ include("forms/login-form.twig") }}