Updated bootstrap.php to include scripts as defer

tpl/bootstrap.php

@@ -46,27 +46,27 @@ endif;
 <?php
 if ($QRCODE) :
 ?>
-		<?php $this->_scriptTag('js/kjua-0.10.0.js', 'async'); ?>
+		<?php $this->_scriptTag('js/kjua-0.10.0.js', 'defer'); ?>
 <?php
 endif;
 ?>
-		<?php $this->_scriptTag('js/zlib-1.3.1-1.js', 'async'); ?>
+		<?php $this->_scriptTag('js/zlib-1.3.1-1.js', 'defer'); ?>
 		<?php $this->_scriptTag('js/base-x-5.0.1.js', 'defer'); ?>
 		<?php $this->_scriptTag('js/bootstrap-3.4.1.js', 'defer'); ?>
 <?php
 if ($SYNTAXHIGHLIGHTING) :
 ?>
-		<?php $this->_scriptTag('js/prettify.js', 'async'); ?>
+		<?php $this->_scriptTag('js/prettify.js', 'defer'); ?>
 <?php
 endif;
 if ($MARKDOWN) :
 ?>
-		<?php $this->_scriptTag('js/showdown-2.1.0.js', 'async'); ?>
+		<?php $this->_scriptTag('js/showdown-2.1.0.js', 'defer'); ?>
 <?php
 endif;
 ?>
-		<?php $this->_scriptTag('js/purify-3.2.6.js', 'async'); ?>
-		<?php $this->_scriptTag('js/legacy.js', 'async'); ?>
+		<?php $this->_scriptTag('js/purify-3.2.6.js', 'defer'); ?>
+		<?php $this->_scriptTag('js/legacy.js', 'defer'); ?>
 		<?php $this->_scriptTag('js/privatebin.js', 'defer'); ?>
 		<!-- icon -->
 		<link rel="apple-touch-icon" href="<?php echo I18n::encode($BASEPATH); ?>img/apple-touch-icon.png" sizes="180x180" />