notification: add selector on title, move styles

src/Bundle/ChillMainBundle/Resources/views/Notification/_list_item.html.twig

@@ -1,6 +1,6 @@
 <div class="item-bloc {% if not notification.isReadBy(app.user) %}unread{% else %}read{% endif %}">
     <div class="item-row title">
-        <h2>
+        <h2 class="notification-title">
             <a href="{{ chill_path_add_return_path('chill_main_notification_show', {'id': notification.id}) }}">
                 {{ notification.title }}
             </a>

src/Bundle/ChillMainBundle/Resources/views/Notification/extension_list_notifications_for.html.twig

@@ -9,7 +9,7 @@
             {% if not notification.isSystem %}
                 {% if notification.sender == app.user %}
 
-                    <h6>
+                    <h6 class="notification-title">
                         <abbr title="{{ 'Le ' ~ notification.date|format_date('long') ~ '\n' ~ notification.title }}">
                             {{ notification.date|format_datetime('short','short') }}
                         </abbr>