Convert docdock theme from submodule to native files and fix Hugo compatibility

themes/docdock/exampleSite/layouts/partials/custom-head.html

@@ -0,0 +1,10 @@
+<script>
+  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
+
+  ga('create', 'UA-79101-13', 'auto');
+  ga('send', 'pageview');
+
+</script>

themes/docdock/exampleSite/layouts/partials/menu-footer.html

@@ -0,0 +1,13 @@
+<center>
+<!-- Place this tag where you want the button to render. -->
+<a class="github-button" href="https://github.com/vjeantet/hugo-theme-docdock/archive/master.zip" data-icon="octicon-cloud-download" aria-label="Download vjeantet/hugo-theme-docdock on GitHub">Download</a>
+
+<!-- Place this tag where you want the button to render. -->
+<a class="github-button" href="https://github.com/vjeantet/hugo-theme-docdock" data-icon="octicon-star" data-show-count="false" aria-label="Star vjeantet/hugo-theme-docdock on GitHub">Star</a>
+
+<!-- Place this tag where you want the button to render. -->
+<a class="github-button" href="https://github.com/vjeantet/hugo-theme-docdock/fork" data-icon="octicon-repo-forked" data-show-count="true" aria-label="Fork vjeantet/hugo-theme-docdock on GitHub">Fork</a>
+
+</center>
+<!-- Place this tag in your head or just before your close body tag. -->
+<script async defer src="https://buttons.github.io/buttons.js"></script>