show a proper error message in help when it can't get the data from apps.owncloud.com

help/templates/index.php

 
 <h1><?php echo $l->t( 'Questions and Answers' ); ?></h1>
 
+<?php if(is_null($_["kbe"])):?>
+	Can't connect to Q&amp;A database
+<?php else:?>
 	<table cellspacing="0" width="100%">
 		<tbody>
 			<?php foreach($_["kbe"] as $kb): ?>
@@ -19,5 +22,6 @@
 		$pageNavi->printPage();
 	?>
 	<a target="_blank" class="prettybutton" href="http://apps.owncloud.com/knowledgebase/editquestion.php?action=new"><?php echo $l->t( 'ASK A QUESTION' ); ?></a>
+<?php endif;?>