Fix directory title display to use formatDisplayName

- Apply formatDisplayName() to directory names in getDirectoryListing()
- This ensures language prefixes are removed from directory titles
- nl.php-testen directory now displays as 'Php-testen' instead of 'Nl.php-testen'
- Footer now shows correct page titles for directories
- Consistent display naming for both files and directories

engine/core/class/CodePressCMS.php

@@ -705,12 +705,9 @@ class CodePressCMS {
         // Get the directory name from the path, not from a potential file
         $pathParts = explode('/', $pagePath);
         $dirName = end($pathParts);
-        $title = ucfirst($dirName) ?: 'Home';
+        $title = $this->formatDisplayName($dirName) ?: 'Home';
         
-        // Force the title to be correct
         $content = '<h1>' . htmlspecialchars($title) . '</h1>';
-        
-        // Debug: ensure we're returning the right title
         $result = [
             'title' => $title,
             'content' => $content