Fix toc js with jekyll v3

Author: fsalvi

_includes/footer.html

@@ -67,7 +67,7 @@
     <!-- Bootstrap JS -->
     <script src="{{ site.baseurl }}/resources/js/vendor/bootstrap.min.js" type="text/javascript" ></script>
 
-    {% unless page.layout == 'page' %}
+    {% unless page.layout == 'page-no-toc' %}
     <!-- table of contents JS -->
     <script src="{{ site.baseurl }}/resources/js/vendor/toc.js" type="text/javascript" ></script>
     <script type="text/javascript">