Fix empty project list card.

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

@@ -1,6 +1,6 @@
 .row.row-spaced
 	.col-xs-12
-		.card.card-thin.project-list-card
+		.card.card-thin
 			div.welcome.text-centered(ng-cloak)
 				h2 #{translate("welcome_to_sl")}
 				p #{translate("new_to_latex_look_at")}