Fix up docs a bit.

docs/_themes/kr/layout.html

@@ -26,20 +26,4 @@
         <img src="http://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png" alt="Fork me on GitHub"  class="github"/>
     </a>
 
-
-    <!-- Piwik -->
-<script type="text/javascript">
-  var _paq = _paq || [];
-  _paq.push(["trackPageView"]);
-  _paq.push(["enableLinkTracking"]);
-
-  (function() {
-    var u=(("https:" == document.location.protocol) ? "https" : "http") + "://piwik.vis4.net/";
-    _paq.push(["setTrackerUrl", u+"piwik.php"]);
-    _paq.push(["setSiteId", "17"]);
-    var d=document, g=d.createElement("script"), s=d.getElementsByTagName("script")[0]; g.type="text/javascript";
-    g.defer=true; g.async=true; g.src=u+"piwik.js"; s.parentNode.insertBefore(g,s);
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 {%- endblock %}

docs/_themes/kr/sidebarlogo.html

@@ -2,7 +2,7 @@
 
 <p style="font-style:italic;font-size:0.9em; text-align:center; margin-bottom:1.5em">Because managing databases in Python should be as simple as reading and writing JSON files.</p>
 
-<iframe width="200px" scrolling="0" height="20px" frameborder="0" allowtransparency="true" src="http://ghbtns.com/github-btn.html?user=pudo&amp;repo=dataset&amp;type=watch&amp;count=true&amp;size=small"></iframe>
+<iframe width="200px" scrolling="0" height="20px" frameborder="0" allowtransparency="true" src="https://ghbtns.com/github-btn.html?user=pudo&repo=dataset&type=watch&count=true&size=small"></iframe>
 
 <h3>Overview</h3>