Add Promise polyfill for IE

codesignd/3-sugar/contact/contact.js

@@ -1,6 +1,3 @@
-//=require element-closest/closest.js
-//=require whatwg-fetch/fetch.js
-
 (function(app) {
 	'use strict';
 	

shared/2-blocks/footer/footer.html.php

@@ -1,8 +1,8 @@
 <footer class="footer">
 	<a href="#top" class="footer__top">↑ <?= l::get('footer.top', 'Top') ?> ↑</a>
-	<div>
+	
-		<?= $site->copyright() ?>
+	<?= $site->copyright()->kirbytext() ?>
-	</div>
+	
 	<nav class="footer__nav">
 		<ul>
 			<li><?= l::get('footer.madewith', 'Made with') ?> <a href="https://getkirby.com">Kirby</a></li><!--

shared/3-sugar/ajax/ajax.js

@@ -1,5 +1,3 @@
-//=require element-closest/closest.js
-//=require whatwg-fetch/fetch.js
 //=require flexismooth/flexismooth.js
 
 (function(app) {

shared/polyfills.js

@@ -0,0 +1,3 @@
+//=require element-closest/element-closest.js
+//=require promise-polyfill/dist/polyfill.js
+//=require whatwg-fetch/dist/fetch.umd.js