Fixed other localizeddate usages

Author: wouterj

app/Resources/views/admin/blog/index.html.twig

@@ -19,7 +19,10 @@
             <tr>
                 <td>{{ post.title }}</td>
                 <td>{{ post.authorEmail }}</td>
-                <td>{% if post.publishedAt %}{{ post.publishedAt|localizeddate('short', 'short') }}{% endif %}</td>
+                {# it's not mandatory to set the timezone in localizeddate(). This is done to
+                   avoid errors when the 'intl' PHP extension is not available and the application
+                   is forced to use the limited "intl polyfill", which only supports UTC and GMT #}
+                <td>{% if post.publishedAt %}{{ post.publishedAt|localizeddate('short', 'short', null, 'UTC') }}{% endif %}</td>
                 <td>
                     <div class="item-actions">
                         <a href="{{ path('admin_post_show', { id: post.id }) }}" class="btn btn-sm btn-default">

app/Resources/views/admin/blog/show.html.twig

@@ -21,7 +21,10 @@
             </tr>
             <tr>
                 <th>{{ 'label.published_at'|trans }}</th>
-                <td><p>{{ post.publishedAt|localizeddate('long', 'medium') }}</p></td>
+                {# it's not mandatory to set the timezone in localizeddate(). This is done to
+                   avoid errors when the 'intl' PHP extension is not available and the application
+                   is forced to use the limited "intl polyfill", which only supports UTC and GMT #}
+                <td><p>{{ post.publishedAt|localizeddate('long', 'medium', null, 'UTC') }}</p></td>
             </tr>
         </tbody>
     </table>

app/Resources/views/blog/post_show.html.twig

@@ -32,7 +32,10 @@
         <div class="row post-comment">
             <h4 class="col-sm-3">
                 <strong>{{ comment.authorEmail }}</strong> {{ 'post.commented_on'|trans }}
-                <strong>{{ comment.publishedAt|localizeddate('medium', 'short') }}</strong>
+                {# it's not mandatory to set the timezone in localizeddate(). This is done to
+                   avoid errors when the 'intl' PHP extension is not available and the application
+                   is forced to use the limited "intl polyfill", which only supports UTC and GMT #}
+                <strong>{{ comment.publishedAt|localizeddate('medium', 'short', null, 'UTC') }}</strong>
             </h4>
             <div class="col-sm-9">
                 {{ comment.content|md2html }}