Change default values to have predictable default state (#4736)

config-user.default.php

@@ -41,7 +41,7 @@ return array (
 	'hide_read_feeds' => true,
 	'onread_jump_next' => true,
 	'lazyload' => true,
-	'sides_close_article' => true,
+	'sides_close_article' => false,
 	'sticky_post' => true,
 	'reading_confirm' => false,
 	'auto_remove_article' => false,
@@ -58,7 +58,7 @@ return array (
 		'max_n_unread' => false,
 		'reception' => false,
 		'same_title_in_feed' => false,
-		'scroll' => true,
+		'scroll' => false,
 		'site' => true,
 	),
 	'theme' => 'Origine',