list: fix date variable on the lists and sections

* Restores the Publisdate displayed on posts lists instead of Date
  (creation date).
* Restores the post-taxonomies class on the item list of the post
  information categories.

Co-Authored-by: iGor milhit <igor@milhit.ch>

layouts/_default/list.html

@@ -7,7 +7,7 @@
     {{.Content}}
     <article class="posts-list">
         <!-- Ranges through content/posts/*.md -->
-        {{ range .Pages }}
+        {{ range .Pages.ByPublishDate.Reverse }}
         <article>
             <a href="{{.Permalink}}">{{.Title}}</a>
             {{ partial "lists-footer.html" . }}

layouts/partials/lists-footer.html

@@ -1,5 +1,5 @@
 <footer class="list-footer">
-{{ .Date.Format "2006-01-02" }}
+{{ .PublishDate.Format "2006-01-02" }}
 {{ with .Params.categories }}
   {{ range sort . }}
     / <a href="{{ "categories" | absURL}}/{{ . | urlize }}">{{ . }}</a>

layouts/partials/post-info.html

@@ -7,7 +7,7 @@
   <li>Catégories&#x202F;:
     <ul>
       {{ range sort . }}
-      <li><a href="{{ "categories" | absURL}}/{{ . | urlize }}">{{ . }}</a></li>
+      <li class="post-taxonomies"><a href="{{ "categories" | absURL}}/{{ . | urlize }}">{{ . }}</a></li>
       {{ end }}
     </ul>
   </li>