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/includes/config.php

@@ -38,4 +38,3 @@ if(!isset($error) || !$error) {
 		$error = true;
 	}
 }
-?>

install/steps/2-license.php

@@ -5,4 +5,3 @@ $twig->display('install.license.html.twig', array(
 	'license' => file_get_contents(BASE . 'LICENSE'),
 	'buttons' => next_buttons()
 ));
-?>

install/steps/4-config.php

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