{{ define "sitecategories" }}
   {{- range .Site.Categories }}
    <h2 id="{{ .Slug }}"><a href="/categories/{{ .Slug }}">{{ .Name }}</a></h2>
    {{ template "links" .RelatedNodes }}
   {{- end }}
{{- end}}

{{ define "sitecategory" }}
  {{- .Description }}
  {{- template "gallery" .RelatedNodes }}
{{- end }}