link logo to homepage

app/templates/_base/sidenav.html.j2

 <ul class="sidenav sidenav-fixed" id="sidenav">
   <li class="primary-color hide-on-small-only">
-    <div style="overflow: hidden;height: 64px; width: 250px;">
-      <img class="hide-on-small-only" src="{{ url_for('static', filename='images/nopaque_-_logo_name_slogan.svg') }}" style="height: 128px; margin-top: -32px;">
-    </div>
+      <div style="overflow: hidden; height: 64px; width: 250px;">
+        <a href="{{ url_for('main.index') }}">
+          <img class="hide-on-small-only" src="{{ url_for('static', filename='images/nopaque_-_logo_name_slogan.svg') }}" style="height: 128px; margin-top: -32px;">
+        </a>
+      </div>
   </li>
   <li class="primary-variant-color center-align hide-on-small-only">
     <span class="white-text">from text > to data > to analysis</span>
   </li>
-  <li><a href="{{ url_for('main.index') }}"><i class="material-icons left">home</i>nopaque</a></li>
+  <li class="hide-on-med-and-up"><a class="waves-effect" href="{{ url_for('main.index') }}"><i class="material-icons left">home</i>nopaque</a></li>
   <li>
     <a class="waves-effect" href="{{ url_for('main.news') }}"><i class="material-icons left">email</i>News</a>
   </li>