Add authors taxonomy for blog posts (#435)

* Add authors taxonomy and layout

* Add my name to contributors file

* Add authors to front matter post archetypes

* Add author to i18n for en

* Add authors taxonomy to exampleSite config

* Add some author names to exampleSite for demo

* Tested authors on pt-br and externally-linked post
* Also ran make release again

* Resources

Deleted resources in exampleSite and added resources in root

layouts/partials/taxonomy/authors.html

@@ -0,0 +1,9 @@
+<div class="authors">
+    <i class="fa fa-user" aria-hidden="true"></i>
+    {{- range $index, $el := . -}}
+      {{- if gt $index 0 }}
+        <span class="separator">•</span>
+      {{- end }}
+      <a href="{{ ( printf "authors/%s/" ( . | urlize ) ) | relLangURL }}">{{ . }}</a>
+    {{- end -}}
+  </div>