[skip ci] Disable pagination gap button

app/views/kaminari/gitlab/_gap.html.haml

@@ -4,5 +4,5 @@
 -#    total_pages:   total number of pages
 -#    per_page:      number of items to fetch per page
 -#    remote:        data-remote
-%li.page-item
+%li.page-item.disabled
   = link_to raw(t 'views.pagination.truncate'), '#', class: 'page-link'