✨ Only allow creator to modify subscribers

Signed-off-by: Luke Tainton <luke@tainton.uk>

app/public/editsub.php

@@ -1,10 +1,10 @@
 <?php
-    $PAGE_NAME = "Manage request subscribers";
+    $PAGE_NAME = "Manage Subscribers";
     require_once __DIR__ . "/../includes/header.php";
 
     $request = get_request($db, $_GET['rid']);
     $authorised_users = get_subscribers($db, $request);
-    $is_authorised = isAuthorised($_SESSION['uuid'], $authorised_users, $request);
+    $is_authorised = if ($_SESSION['uuid'] == $request['created_by']) {return true} else {return false};
 
     $all_users = get_all_users($db);