[Web] Fix PHPMailer, minor style change for quarantine rcpts

data/web/inc/functions.inc.php

@@ -1,4 +1,7 @@
 <?php
+use PHPMailer\PHPMailer\PHPMailer;
+use PHPMailer\PHPMailer\SMTP;
+use PHPMailer\PHPMailer\Exception;
 function is_valid_regex($exp) {
   return @preg_match($exp, '') !== false;
 }