Merge branch 'revert-45aa8f14' into 'master'

Revert "Merge branch 'use-bootstrap-selector' into 'master'"

See merge request gitlab-org/gitlab-ee!10431

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/multiple_rule/approvals_summary_optional.vue

@@ -39,7 +39,7 @@ export default {
       :href="helpPath"
       :title="__('About this feature')"
       target="_blank"
-      class="pl-1"
+      class="d-flex-center pl-1"
     >
       <icon name="question-o" />
     </gl-link>