Add aria role to warning

services/web/app/views/project/list/project-list.pug

@@ -116,7 +116,7 @@
 .row.row-spaced
 	each warning in warnings
 		.col-xs-12
-			.alert.alert-warning= warning
+			.alert.alert-warning(role="alert")= warning
 
 	.col-xs-12
 		.card.card-thin.project-list-card