Modernize FTP UI: use modern.css, add dark-box container, remove redundant DB function, delete unused FTP config

Web/content/ftp/index.php

@@ -12,8 +12,8 @@
     ini_set('display_errors', 1);
     error_reporting(E_ALL);
 
-    require 'config.php';
-    $sftp = initializeSFTP($host, $username, $password);
+    require_once __DIR__ . '/../../config/config.php';
+    $sftp = initializeSFTP();
 
     $currentPath = isset($_GET['path']) ? normalizePath($_GET['path']) : $defaultPath;
     if (strpos($currentPath, $defaultPath) !== 0) {
@@ -39,7 +39,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
     <link rel="icon" href="../../img/favicon.ico" type="image/x-icon">
-    <link rel="stylesheet" href="../../css/bootstrap.css">
+    <link rel="stylesheet" href="../../css/modern.css">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.1/font/bootstrap-icons.css">
     <link rel="stylesheet" href="css/index.css">
     <script src="../../js/bootstrap.bundle.js"></script>
@@ -51,7 +51,7 @@
         <span id="themeText"></span>
     </button>
 </div>
-<div class="custom-container">
+<div class="custom-container dark-box">
 <header class="row border-bottom m-5">
     <h1>USB RAID Array</h1>
     <div class="mb-3 p-3">