Fix bug of JavaScript loading

Introduced by https://github.com/marienfressinaud/FreshRSS/commit/64b3d140f64d8fcaba30a514e0f956929f9bb126

app/views/helpers/view/global_view.phtml

@@ -46,7 +46,7 @@
 </div>
 
 <?php } else { ?>
-<div class="prompt alert alert-warn">
+<div id="stream" class="prompt alert alert-warn global">
 	<h2><?php echo _t('no_feed_to_display'); ?></h2>
 	<a href="<?php echo _url('configure', 'feed'); ?>"><?php echo _t('think_to_add'); ?></a><br /><br />
 </div>

app/views/helpers/view/normal_view.phtml

@@ -183,7 +183,7 @@ if (!empty($this->entries)) {
 <?php $this->partial ('nav_entries'); ?>
 
 <?php } else { ?>
-<div class="prompt alert alert-warn">
+<div id="stream" class="prompt alert alert-warn normal">
 	<h2><?php echo _t('no_feed_to_display'); ?></h2>
 	<a href="<?php echo _url('configure', 'feed'); ?>"><?php echo _t('think_to_add'); ?></a><br /><br />
 </div>

app/views/helpers/view/reader_view.phtml

@@ -37,7 +37,7 @@ if (!empty($this->entries)) {
 </div>
 
 <?php } else { ?>
-<div class="prompt alert alert-warn">
+<div id="stream" class="prompt alert alert-warn reader">
 	<h2><?php echo _t('no_feed_to_display'); ?></h2>
 	<a href="<?php echo _url('configure', 'feed'); ?>"><?php echo _t('think_to_add'); ?></a><br /><br />
 </div>