properly format metadata and previous and next pages

layouts/partials/prev-next.html

@@ -0,0 +1,13 @@
+{{ $pages := .CurrentSection.Pages.ByDate.Reverse }}
+
+{{ with $pages.Prev . }}
+  <a href="{{ .RelPermalink }}">« Entrada anterior</a>
+{{ else }}
+  {{ print "« Entrada anterior" }}
+{{ end }}
+<span>|</span>
+{{ with $pages.Next . }}
+  <a href="{{ .RelPermalink }}">Entrada siguiente »</a>
+{{ else }}
+  {{ print "Entrada siguiente »" }}
+{{ end }}

layouts/partials/taxonomy/categories.html

@@ -0,0 +1,8 @@
+<!-- [html-validate-disable element-required-ancestor] -->
+<dt>{{ i18n "categories" }}</dt>
+<dd>
+{{- range $index, $el := . -}}
+    <span> /</span>
+    <a href="{{ .RelPermalink }}">{{- .LinkTitle -}}</a> 
+{{- end -}}
+</dd>