Add social links to config

exampleSite/config.toml

@@ -61,8 +61,12 @@ enableRobotsTXT = true
   # formatting, see https://gohugo.io/functions/format/
   dateFormat = "2006-01-02"
 
-  # Your email, added to the navbar so readers can reply to your posts
-  email = "me@example.com"
+  # Social media. Delete any item you aren't using to make sure it won't show up
+  # in your website's metadata.
+  [social]
+    email = "me@example.com" # Added to the navbar so readers can reply to posts
+    twitter = "example" # Twitter handle (without '@')
+    facebook_admin = "0000000000" # Facebook Page Admin ID
 
   # (EXPERIMENTAL) If your blog is multilingual but you haven't translated a
   # page, this theme will create a disabled link. By setting `hideUntranslated`

layouts/partials/nav.html

@@ -1,7 +1,9 @@
 {{ range .Site.Menus.main.ByWeight }}
   <a href="{{ relLangURL .URL }}">{{ .Name }}</a>
 {{ end }}
-<a href='mailto:{{ .Site.Params.email }}?subject={{ i18n "email-subject" }}"{{ default .Site.Title .Page.Title }}"'>Email</a>
+{{ with .Site.Social.email }}
+<a href='mailto:{{ . }}?subject={{ i18n "email-subject" }}"{{ default $.Site.Title $.Page.Title }}"'>Email</a>
+{{ end }}
 <a href="{{ .Site.Language.Params.params.blogPath }}/index.xml">RSS</a>
 
 <!-- Convert this page's translations into a dict -->