Template: Add robots meta-tag, set noindex on staging

Stolen from https://github.com/dereckcurry/hugo-robots-meta-tags

themes/ccchh/layouts/partials/head.html

@@ -3,6 +3,7 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <meta charset="utf-8">
+  {{- partial "robots.html" . -}}
   {{- with resources.GetRemote "https://cdn.jsdelivr.net/npm/@picocss/pico@1/css/pico.min.css" }}
   <link rel="stylesheet" href="{{ .RelPermalink }}" crossorigin="anonymous">
   {{ end }}
@@ -17,7 +18,7 @@
   {{- end }}
   {{- end }}
 
-  {{ range .AlternativeOutputFormats -}}
+  {{- range .AlternativeOutputFormats -}}
     {{ printf `<link rel="%s" type="%s" href="%s" title="%s" />` .Rel .MediaType.Type .RelPermalink $.Site.Title | safeHTML }}
   {{- end }}