Implement basic site menu

It has been communicated to us that the menu on the left hand side of the designs.apertis.org site is missed when looking for documents on the website. Implement a basic site menu in a sidebar to get feedback.

Signed-off-by: Martyn Welch martyn.welch@collabora.com

themes/beautifulhugo/layouts/partials/footer_custom.html

@@ -2,3 +2,14 @@
 <script>
 anchors.add('h1,h2,h3,h4,h5,h6').remove('.page-heading > h1');
 </script>
+
+<script>
+function toggleSidebar(item) {
+  $('#site-sidebar').toggleClass('sidebar-hidden');
+  if ($('#site-sidebar').width() != 300) {
+    item.innerHTML = "&#x25B2"
+  } else {
+    item.innerHTML = "&#x25BC"
+  }
+}
+</script>