add head.html (#3578)

site/layouts/partials/head.html

@@ -0,0 +1,43 @@
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+{{ hugo.Generator }}
+{{- $outputFormat := partial "outputformat.html" . -}}
+
+{{ range .AlternativeOutputFormats -}}
+<link rel="{{ .Rel }}" type="{{ .MediaType.Type }}" href="{{ .Permalink | safeURL }}">
+{{ end -}}
+
+{{ if and (eq (getenv "HUGO_ENV") "production") (ne $outputFormat "print") -}}
+<META NAME="ROBOTS" CONTENT="INDEX, FOLLOW">
+{{ else -}}
+<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
+{{ end -}}
+
+{{ partialCached "favicons.html" . }}
+<title>{{ if .IsHome }}{{ .Site.Title }}{{ else }}{{ with .Title }}{{ . }} | {{ end }}{{ .Site.Title }}{{ end }}</title>
+<meta name="description" content="{{ .Site.Params.Description }}">
+{{- template "_internal/opengraph.html" . -}}
+{{- template "_internal/google_news.html" . -}}
+{{- template "_internal/schema.html" . -}}
+{{- template "_internal/twitter_cards.html" . -}}
+
+{{ partialCached "head-css.html" . "asdf" }}
+<script
+  src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"
+  integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0="
+  crossorigin="anonymous"></script>
+{{ if .Site.Params.offlineSearch }}
+<script
+  src="https://unpkg.com/lunr@2.3.8/lunr.min.js"
+  integrity="sha384-vRQ9bDyE0Wnu+lMfm57BlYLO0/XauFuKpVsZPs7KEDwYKktWi5+Kz3MP8++DFlRY"
+  crossorigin="anonymous"></script>
+{{end}}
+{{ if .Site.Params.prism_syntax_highlighting }}
+<!-- stylesheet for Prism -->
+<link rel="stylesheet" href="{{ "/css/prism.css" | relURL }}"/>
+{{ end }}
+{{ partial "hooks/head-end.html" . }}
+<!--To comply with GDPR, cookie consent scripts places in head-end must execute before Google Analytics is enabled -->
+{{ if eq (getenv "HUGO_ENV") "production" }}
+{{ template "_internal/google_analytics_async.html" . }}
+{{ end }}