minor #439 Tweaked the admin blog post show page (javiereguiluz)

This PR was squashed before being merged into the master branch (closes #439).

Discussion
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Tweaked the admin blog post show page

And the last PR about tweaking admin pages. This time, the blog post show page (the "author" is gone because you can only see your own blog posts in the backend):

| Before | After
| --- | ---
| ![before-show](https://cloud.githubusercontent.com/assets/73419/22025941/99a1f29c-dccf-11e6-942a-085f8271fc85.png) | ![after-show](https://cloud.githubusercontent.com/assets/73419/22025960/a3fba3dc-dccf-11e6-96eb-5bddef967452.png)

Commits
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86d8314 Tweaked the admin blog post show page

Author: javiereguiluz

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

@@ -4,30 +4,16 @@
 
 {% block main %}
     <h1>{{ post.title }}</h1>
+    <p class="post-metadata">
+        <i class="fa fa-calendar"></i> {{ post.publishedAt|localizeddate('long', 'medium', null, 'UTC') }}
+        <i class="fa fa-user"></i> {{ post.author.email }}
+    </p>
 
-    <table class="table">
-        <tbody>
-            <tr>
-                <th scope="row">{{ 'label.summary'|trans }}</th>
-                <td>{{ post.summary|md2html }}</td>
-            </tr>
-            <tr>
-                <th scope="row">{{ 'label.content'|trans }}</th>
-                <td>{{ post.content|md2html }}</td>
-            </tr>
-            <tr>
-                <th scope="row">{{ 'label.author'|trans }}</th>
-                <td><p>{{ post.author.email }}</p></td>
-            </tr>
-            <tr>
-                <th scope="row">{{ 'label.published_at'|trans }}</th>
-                {# 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>
+    <div class="well">
+        <p class="m-b-0"><strong>{{ 'label.summary'|trans }}</strong>: {{ post.summary }}</p>
+    </div>
+
+    {{ post.content|md2html }}
 {% endblock %}
 
 {% block sidebar %}

web/css/main.css

@@ -32,6 +32,10 @@ i {
     vertical-align: middle;
 }
 
+/* Utilities
+   ------------------------------------------------------------------------- */
+.m-b-0 { margin-bottom: 0 }
+
 /* Page elements
    ------------------------------------------------------------------------- */
 body {