WIP - Removing unneccessary closing tags to prevent potential issues. (#223)

* Part 1

Removing closing tags when no HTML or other output comes after the last PHP codeblock.

* Further removals

* nothing

---------

Co-authored-by: slawkens <slawkens@gmail.com>

install/steps/4-config.php

@@ -18,4 +18,3 @@ $twig->display('install.config.html.twig', array(
 	'errors' => isset($errors) ? $errors : null,
 	'buttons' => next_buttons()
 ));
-?>