Apply php-cs-fixer fixers

- braces
- function_declaration
- lowercase_keywords
- method_argument_space
- no_spaces_inside_parenthesis
- no_trailing_whitespace
- no_trailing_whitespace_in_comment
- single_blank_line_at_eof

server-info.php

@@ -13,7 +13,8 @@ if (!$enabled) {
     die('Set $enabled to true to see server info.');
 }
 
-function assertTrue($test, $message) {
+function assertTrue($test, $message)
+{
     if (!$test) {
         echo "Warning: $message\n";
     }