Fix pagination first and last page buttons

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

@@ -6,4 +6,4 @@
 -#    per_page:      number of items to fetch per page
 -#    remote:        data-remote
 %li.first.page-item
-  = link_to_unless current_page.first?, raw(t 'views.pagination.first'), url, remote: remote
+  = link_to_unless current_page.first?, raw(t 'views.pagination.first'), url, remote: remote, class: 'page-link'

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

@@ -6,4 +6,4 @@
 -#    per_page:      number of items to fetch per page
 -#    remote:        data-remote
 %li.last.page-item
-  = link_to_unless current_page.last?, raw(t 'views.pagination.last'), url, {remote: remote}
+  = link_to_unless current_page.last?, raw(t 'views.pagination.last'), url, {remote: remote, class: 'page-link'}