Add author management functionality and update routing rules

- Updated .htaccess rules to allow trailing slashes for specific routes.
- Introduced a new .gitignore file to exclude the cache directory.
- Created project configuration file for Serena with language and tool settings.
- Implemented Authors class for managing author data, including methods for saving, deleting, and editing authors.
- Added factory class for Authors to handle database interactions related to authors.
- Developed Article class to manage article data and interactions, including fetching articles and updating views.
- Created Page class with a placeholder method for sorting pages.
- Added front factory class for fetching author details with caching.

autoload/admin/controls/class.Pages.php

@@ -4,21 +4,20 @@ namespace admin\controls;
 
 class Pages
 {
-  public static function pages_url_browser()
+  static public function pages_url_browser()
   {
     global $user;
 
     if ( !\admin\factory\Users::check_privileges( 'page_administration', $user['id'] ) )
       return \S::alert( 'Nie masz uprawnień' );
-    
-    echo \admin\view\Pages::browse_list(
-            \admin\factory\Pages::menus_list(),
-            \S::get( 'modal' )
-    );
-    exit;
+
+    return \Tpl::view( 'pages/pages-browse-list', [
+      'menus' => \admin\factory\Pages::menus_list(),
+      'modal' => true
+    ] );
   }
 
-  public static function browse_list()
+  static public function browse_list()
   {
     global $user;