post image: get the image in the atom xml file

* Moves the image from the post header to the main content.
* Fixes an error in the publication date in the atom file.
* Adapts the style of the figure when it's a post image.
* Comments the single page template.

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

assets/scss/_medias.scss

@@ -1,3 +1,9 @@
+///////////////////
+//               //
+//    MEDIAS     //
+//               //
+///////////////////
+
 .audio,
 .stream {
   border: $dark-polar solid 1px;
@@ -71,3 +77,15 @@ figure {
     }
   }
 }
+
+.post-image {
+  border: none;
+  margin-left: 0;
+  padding-left: 0;
+
+  @include breakpoint(laptop) {
+    max-width: 97%;
+    margin-right: 0;
+    padding-right: 0;
+  }
+}

assets/scss/_post.scss

@@ -10,10 +10,6 @@
   }
 }
 
-.post-image {
-  width: 97%;
-}
-
 .post-info {
 
   > ul {

layouts/_default/rss.xml

@@ -29,7 +29,7 @@
     <item>
       <title>{{ .Title }}</title>
       <link>{{ .Permalink }}</link>
-      <pubDate>{{ .PublishDate.Format "2006-01-02" | safeHTML }}</pubDate>
+      <pubDate>{{ .PublishDate.Format "Mon, 02 Jan 2006 15:04:05 -0700" | safeHTML }}</pubDate>
       {{ with .Site.Author.email }}<author>{{.}}{{ with $.Site.Author.name }} ({{.}}){{end}}</author>{{end}}
       <guid>{{ .Permalink }}</guid>
       <description>{{ .Content | html }}</description>

layouts/_default/single.html

@@ -1,17 +1,30 @@
 {{ define "main" }}
   <header class="post-header">
-    {{ if .Params.postimage  -}}
-    <img class="post-image"
-         src="/images/{{ .Params.postimage }}"
-         alt="{{ .Params.postimagedescription }}">
-    {{ end }}
     <h1 id="title">{{ .Title }}</h1>
+    <!--
+      If it's a static page, then the post information are useless and
+      therefore not displayed. The test checks if the page IS NOT a static
+      page.
+    -->
     {{- if ne .Layout "static" }}
     {{- partial "post-info.html" . -}}
     {{ end }}
   </header>
+  <!--
+    If in the front matter, the layout key is set to verse, then the class is
+    added.
+  -->
   <article {{ if eq .Layout "verse" }} class="content, {{ .Layout }}"
            {{ else }} class="content" {{ end -}}>
+  <!--
+    Displays the image associated to the post, if set in the front matter.
+  -->
+    {{ if .Params.postimage  -}}
+    <figure class="post-image">
+    <img src="/images/{{ .Params.postimage }}"
+         alt="{{ .Params.postimagedescription }}">
+    </figure>
+    {{ end }}
     {{ .Content -}}
   </article>
 {{ end -}}