Track wiki changes

[fregante]

e.g.

<div class="alert gollum"><div class="body"><!-- gollum -->
<svg aria-label="Wiki" class="octicon octicon-book dashboard-event-icon" height="32" role="img" version="1.1" viewBox="0 0 16 16" width="32"><path fill-rule="evenodd" d="M3 5h4v1H3V5zm0 3h4V7H3v1zm0 2h4V9H3v1zm11-5h-4v1h4V5zm0 2h-4v1h4V7zm0 2h-4v1h4V9zm2-6v9c0 .55-.45 1-1 1H9.5l-1 1-1-1H2c-.55 0-1-.45-1-1V3c0-.55.45-1 1-1h5.5l1 1 1-1H15c.55 0 1 .45 1 1zm-8 .5L7.5 3H2v9h6V3.5zm7-.5H9.5l-.5.5V12h6V3z"></path></svg>

<div class="time">
  <relative-time datetime="2017-07-04T20:48:44Z" title="Jul 5, 2017, 4:48 AM GMT+8">5 hours ago</relative-time>
</div>

<div class="title">
  <a href="/desfero" data-ga-click="News feed, event click, Event click type:GollumEvent target:actor">desfero</a> edited the <a href="/rollup/rollup" data-ga-click="News feed, event click, Event click type:GollumEvent target:repo">rollup/rollup</a> wiki
</div>

<div class="details">
  <a href="/desfero"><img alt="@desfero" class="gravatar" height="30" src="https://avatars1.githubusercontent.com/u/7031578?v=3&amp;s=60" width="30"></a>
  <div class="commits">
    <ul>
        <li>
          Edited
          <a href="/rollup/rollup/wiki/ES6-modules" data-ga-click="News feed, event click, Event click type:GollumEvent target:wiki-page">ES6 modules</a>.
            <a href="/rollup/rollup/wiki/ES6-modules/_compare/d1d88bc^...d1d88bc" data-ga-click="News feed, event click, Event click type:GollumEvent target:wiki-compare">View the diff »</a>
        </li>
    </ul>
  </div>
</div>
</div></div>