Ajout des mentions legales

Inspiration :
- https://anemon.co/mentions-legales/
- https://www.cap-services.coop/mentions-legales/
- https://lafrenchtech.com/fr/mentions-legales/

themes/meghna-hugo/layouts/_default/single.html

@@ -5,13 +5,19 @@
 <section class="section">
   <div class="container">
     <div class="row">
-      <div class="col-lg-8 offset-lg-2 text-center">
+      <div class="col-lg-8 offset-lg-2 text-center height-title">
         <h1>{{ .Title }}</h1>
         <ul class="list-inline mb-50">
+          {{ if .Params.Author }}
           <li class="list-inline-item"><a href="{{ `author/` | relLangURL }}{{ .Params.Author | urlize }}/">{{ .Params.Author }}</a></li>
-          <li class="list-inline-item">{{ dateFormat "Monday, Jan 2, 2006" .Date }}</li>
+          {{ end }}
+          {{ if .Date }}
+          <li class="list-inline-item">Dernière modification :<br> {{ .Date | time.Format ":date_full" }}</li>
+          {{ end }}
         </ul>
+        {{ if .Params.Image }}
         <img class="img-fluid mb-50 lozad" data-src="{{ .Params.Image | absURL }}" alt="blog-image">
+        {{ end }}
       </div>
       <div class="col-lg-8 offset-lg-2">
         <div class="post-single-content">