Add Feedback Field to Zendesk Guide with Slack notification

article_page_before.js

<div class="article-votes">
  <span class="article-votes-question">{{t 'was_this_article_helpful'}}</span>
  <div class="article-votes-controls" role='radiogroup'>
    {{vote 'up' role='radio' class='button article-vote article-vote-up'}}
    {{vote 'down' role='radio' class='button article-vote article-vote-down'}}
  </div>
  <small class="article-votes-count">
    {{vote 'label' class='article-vote-label'}}
  </small>
</div>