Add missing menu rule

aleksis/apps/kolego/rules.py

@@ -49,3 +49,8 @@ delete_absencereason_predicate = has_person & (
     has_global_perm("kolego.delete_absencereason") | has_object_perm("kolego.delete_absencereason")
 )
 rules.add_perm("kolego.delete_absencereason_rule", delete_absencereason_predicate)
+
+view_menu_predicate = has_person & (
+    view_absences_predicate | view_absencereasons_predicate
+)
+rules.add_perm("kolego.view_menu_rule", view_menu_predicate)