Resolve "Re-introduce tab layout on week view"

Closes #242 (closed)

aleksis/apps/alsijil/static/css/alsijil/week_view.css

@@ -116,3 +116,7 @@ p.subtitle {
 .unfold-trigger.vertical i.material-icons {
   transform: rotate(-180deg);
 }
+
+.tabs-icons .tab svg.iconify {
+  display: block;
+}