Fix syntax highlighting, static dir and add back header template

layouts/partials/header.html

@@ -0,0 +1,40 @@
+<meta charset="UTF-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<meta http-equiv="X-UA-Compatible" content="ie=edge" />
+
+<!-- Add CSS for rouge -->
+<link rel="stylesheet" href="/rouge.css">
+
+<!-- Add manifest and service worker for PWA support -->
+<link rel="manifest" href="/site.webmanifest" />
+<script>
+  if('serviceWorker' in navigator) {
+      navigator.serviceWorker
+      .register('/sw.js', { scope: '/' });
+  }
+</script>
+
+<!-- umami analytics -->
+<script async defer data-website-id="d79111e4-25ee-43d8-be20-5cd3a845a8cf" src="https://umami.korhonen.cc/ua9quuaW.js"></script>
+
+<!-- IndieAuth -->
+<link rel="pgpkey" href="https://openpgpkey.korhonen.cc/.well-known/openpgpkey/korhonen.cc/hu/u59jwso7wz4bwuizmgx1qfqhr1i9mq6e">
+<link rel="openid.delegate" href="https://korhonen.cc" />
+<link rel="openid.server" href="https://openid.indieauth.com/openid" />
+
+{{ partial "helpers/style-bundle.html" . }}
+
+<!--================= fab-icon =========================-->
+{{/* add favicon only if the site author has provided the the favicon */}}
+{{ if site.Params.logo.favicon }}
+  {{ $favicon := site.Params.logo.favicon }}
+
+  {{/* resize the favicon. don't resize svg because it is not supported */}}
+  {{ $favicon = resources.Get $favicon }}
+  {{ if and $favicon (ne $favicon.MediaType.SubType "svg") }}
+    {{ $favicon = $favicon.Resize "42x" }}
+  {{ end }}
+  {{ $favicon = $favicon.RelPermalink}}
+
+  <link rel="icon" type="image/png" href="{{ $favicon }}" />
+{{end}}