bug #430 Display missing "about" section in admin blog show page (yceruto)

This PR was squashed before being merged into the master branch (closes #430).

Discussion
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Display missing "about" section in admin blog show page

Also I've added in this PR some minor simplifications ;)

Commits
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6d35acb Display missing "about" section in admin blog show page

Author: javiereguiluz

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

@@ -46,5 +46,7 @@
         }, with_context = false) }}
     </div>
 
+    {{ parent() }}
+
     {{ show_source_code(_self) }}
 {% endblock %}

app/Resources/views/form/fields.html.twig

@@ -8,12 +8,10 @@
 #}
 
 {% block date_time_picker_widget %}
-    {% spaceless %}
-        <div class="input-group date" data-toggle="datetimepicker">
-            {{ block('datetime_widget') }}
-            <span class="input-group-addon">
-                <span class="fa fa-calendar" aria-hidden="true"></span>
-            </span>
-        </div>
-    {% endspaceless %}
+    <div class="input-group date" data-toggle="datetimepicker">
+        {{ block('datetime_widget') }}
+        <span class="input-group-addon">
+            <span class="fa fa-calendar" aria-hidden="true"></span>
+        </span>
+    </div>
 {% endblock %}

app/Resources/views/security/login.html.twig

@@ -80,8 +80,8 @@
         </div>
     </div>
 {% endblock %}
-{% block sidebar %}
 
+{% block sidebar %}
     {{ parent() }}
 
     {{ show_source_code(_self) }}

src/AppBundle/DataFixtures/ORM/LoadFixtures.php

@@ -17,7 +17,7 @@
 use Doctrine\Common\DataFixtures\FixtureInterface;
 use Doctrine\Common\Persistence\ObjectManager;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
-use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\ContainerAwareTrait;
 
 /**
  * Defines the sample data to load in the database when running the unit and
@@ -34,8 +34,7 @@
  */
 class LoadFixtures implements FixtureInterface, ContainerAwareInterface
 {
-    /** @var ContainerInterface */
-    private $container;
+    use ContainerAwareTrait;
 
     /**
      * {@inheritdoc}
@@ -98,14 +97,6 @@ private function loadPosts(ObjectManager $manager)
         $manager->flush();
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function setContainer(ContainerInterface $container = null)
-    {
-        $this->container = $container;
-    }
-
     private function getPostContent()
     {
         return <<<'MARKDOWN'