Allow hiding ShowCodeCopyButtons per page

closes: #548

layouts/_default/baseof.html

@@ -17,7 +17,7 @@
     <main class="main">
         {{- block "main" . }}{{ end }}
     </main>
-    {{ partialCached "footer.html" . .Layout .Kind (.Param "hideFooter") -}}
+    {{ partialCached "footer.html" . .Layout .Kind (.Param "hideFooter") (.Param "ShowCodeCopyButtons") -}}
 </body>
 
 </html>

layouts/partials/footer.html

@@ -84,7 +84,7 @@
 </script>
 {{- end }}
 
-{{- if (and (eq .Kind "page") (ne .Layout "archives") (ne .Layout "search") (.Site.Params.ShowCodeCopyButtons)) }}
+{{- if (and (eq .Kind "page") (ne .Layout "archives") (ne .Layout "search") (.Param "ShowCodeCopyButtons")) }}
 <script>
     document.querySelectorAll('pre > code').forEach((codeblock) => {
         const container = codeblock.parentNode.parentNode;