fix(template) Allow error page to render nicely

Allow error page to render nicely: apply template to error page  too

Author: dizzzz

generators/app/templates/pages/error-page.html

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<div xmlns="http://www.w3.org/1999/xhtml" data-template-with="templates/page.html" data-template-at="content">
+<div xmlns="http://www.w3.org/1999/xhtml" data-template="templates:surround"  data-template-with="templates/page.html" data-template-at="content">
     <h1>An error has occurred</h1>
     <p>An error has been generated by the application.</p>
     <pre class="error templates:error-description"/>