Fix ?preview

_includes/2017/code-sponsor.html

@@ -1,3 +1,3 @@
-<aside class='code-sponsor'>
+<aside class='code-sponsor' data-js-no-preview>
   <div id='code-sponsor-widget'></div><script src='https://app.codesponsor.io/scripts/{{ site.data.codesponsor.id }}?theme=light&image=hide&height=100&width=330'></script>
 </aside>

_layouts/2017/sheet.html

@@ -6,7 +6,7 @@
   <header class='main-heading -center'>
     <h1 class='h1'>{{ page.title }} <em>{{ site.data.content.sheet.suffix }}</em></h1>
 
-    <div class='adbox'>
+    <div class='adbox' data-js-no-preview>
       {% if site.data.codesponsor.enabled %}
       <div class='ad -codesponsor'>
         {% include 2017/code-sponsor.html %}

assets/2017/script.js

@@ -4,7 +4,7 @@
 
 $(function () {
   if (~window.location.search.indexOf('preview=1')) {
-    $('.SideAd, .HeadlineAd').remove()
+    $('[data-js-no-preview]').remove()
   }
 })