Add Star and update Fork buttons

Author: artemp

_layouts/01_splash.html

@@ -17,10 +17,9 @@
           <a href="{{site.baseurl}}/pages/downloads.html" class="button stroke white col5">Download mapnik</a>
         </div>
         <div id="intro3" class="col9 margin2 pad2y">
-          <a class="github-button" href="https://github.com/mapnik/mapnik/fork" data-style="mega" data-count-href="/mapnik/mapnik/network" data-count-api="/repos/mapnik/mapnik#forks_count" data-count-aria-label="# forks on GitHub" aria-label="Fork mapnik/mapnik on GitHub">Fork</a>
-          <script async defer id="github-bjs" src="https://buttons.github.io/buttons.js"></script>
+          <a class="github-button" href="https://github.com/mapnik/mapnik" data-icon="octicon-star" data-size="large" data-show-count="true" aria-label="Star mapnik/mapnik on GitHub">Star</a>
+          <a class="github-button" href="https://github.com/mapnik/mapnik/fork" data-icon="octicon-repo-forked" data-size="large" data-show-count="true" aria-label="Fork mapnik/mapnik on GitHub">Fork</a>
         </div>
-
       </div>
       <!-- map design -->
       <div class="module pad8y"></div>
@@ -201,6 +200,7 @@ <h2 class="big">style with a stylesheet</h2>
       {% include stacks.html %}
       {% include footer.html %}
       <!-- end content -->
-    </div>
+      </div>
+      <script async defer id="github-bjs" src="https://buttons.github.io/buttons.js"></script>
   </body>
 </html>