_includes/nav.html

<nav class="navbar navbar-default navbar-fixed-top">
  <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-items">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a href="{{ site.baseurl }}/"><img id="nav-logo" alt="Apache Accumulo" class="img-responsive" src="{{ site.baseurl }}/images/accumulo-logo.png" width="200"
        /></a>
    </div>
    <div class="collapse navbar-collapse" id="navbar-items">
      <ul class="nav navbar-nav">
        <li class="nav-link"><a href="{{ site.baseurl }}/downloads">Download</a></li>
        <li class="nav-link"><a href="{{ site.baseurl }}/tour">Tour</a></li>
        <li class="dropdown">
          <a class="dropdown-toggle" data-toggle="dropdown" href="#">Releases<span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="{{ site.baseurl }}/release/accumulo-2.0.0/">2.0.0 (Latest)</a></li>
            <li><a href="{{ site.baseurl }}/release/accumulo-1.9.3/">1.9.3</a></li>
            <li><a href="{{ site.baseurl }}/release/">Archive</a></li>
          </ul>
        </li>
        <li class="dropdown">
          <a class="dropdown-toggle" data-toggle="dropdown" href="#">Documentation<span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="{{ site.docs_baseurl }}">User Manual (2.x)</a></li>
            <li><a href="{{ site.baseurl }}/docs/2.x/apidocs">Javadocs (2.0)</a></li>
            <li><a href="{{ site.baseurl }}/quickstart-1.x">Quickstart (1.x)</a></li>
            <li><a href="{{ site.baseurl }}/accumulo2-maven-plugin">Accumulo Maven Plugin</a></li>
            <li><a href="{{ site.baseurl }}/1.9/accumulo_user_manual.html">User Manual (1.9)</a></li>
            <li><a href="{{ site.baseurl }}/1.9/apidocs">Javadocs (1.9)</a></li>
            <li><a href="{{ site.baseurl }}/external-docs">External Docs</a></li>
            <li><a href="{{ site.baseurl }}/docs-archive/">Archive</a></li>
          </ul>
        </li>
        <li class="dropdown">
          <a class="dropdown-toggle" data-toggle="dropdown" href="#">Community<span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="{{ site.baseurl }}/contact-us">Contact Us</a></li>
            <li><a href="{{ site.baseurl }}/how-to-contribute">How To Contribute</a></li>
            <li><a href="{{ site.baseurl }}/people">People</a></li>
            <li><a href="{{ site.baseurl }}/related-projects">Related Projects</a></li>
          </ul>
        </li>
        <li class="nav-link"><a href="{{ site.baseurl }}/search">Search</a></li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
        <li class="dropdown">
          <a class="dropdown-toggle" data-toggle="dropdown" href="#"><img alt="Apache Software Foundation" src="https://www.apache.org/foundation/press/kit/feather.svg" width="15"/><span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="https://www.apache.org">Apache Homepage <i class="fa fa-external-link"></i></a></li>
            <li><a href="https://www.apache.org/licenses/">License <i class="fa fa-external-link"></i></a></li>
            <li><a href="https://www.apache.org/foundation/sponsorship">Sponsorship <i class="fa fa-external-link"></i></a></li>
            <li><a href="https://www.apache.org/security">Security <i class="fa fa-external-link"></i></a></li>
            <li><a href="https://www.apache.org/foundation/thanks">Thanks <i class="fa fa-external-link"></i></a></li>
            <li><a href="https://www.apache.org/foundation/policies/conduct">Code of Conduct <i class="fa fa-external-link"></i></a></li>
            <li><a href="https://www.apache.org/events/current-event.html">Current Event <i class="fa fa-external-link"></i></a></li>
          </ul>
        </li>
      </ul>
    </div>
  </div>
</nav>