Rename CSS class "listing" to "panel"

app/Template/project_view/share.php

@@ -4,7 +4,7 @@
 
 <?php if ($project['is_public']): ?>
 
-    <div class="listing">
+    <div class="panel">
         <ul class="no-bullet">
             <li><strong><?= $this->url->icon('share-alt', t('Public link'), 'BoardViewController', 'readonly', array('token' => $project['token']), false, '', '', true) ?></strong></li>
             <li><strong><?= $this->url->icon('rss-square', t('RSS feed'), 'FeedController', 'project', array('token' => $project['token']), false, '', '', true) ?></strong></li>

app/Template/project_view/show.php

@@ -1,7 +1,7 @@
 <div class="page-header">
     <h2><?= t('Summary') ?></h2>
 </div>
-<ul class="listing">
+<ul class="panel">
     <li><strong><?= $project['is_active'] ? t('Active') : t('Inactive') ?></strong></li>
 
     <?php if ($project['owner_id'] > 0): ?>