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.Authors.php

@@ -0,0 +1,65 @@
+<?
+namespace admin\controls;
+class Authors
+{
+  // usunięcie autora
+  static public function delete()
+  {
+    global $user;
+
+    if ( !\admin\factory\Users::check_privileges( 'article_administration', $user['id'] ) )
+      return \S::alert( 'Nie masz uprawnień' );
+
+    $response = [ 'status' => 'error', 'msg' => 'Podczas usuwania autora wystąpił błąd. Proszę spróbować ponownie.' ];
+    $values = \S::json_to_array( \S::get( 'values' ) );
+
+    if ( \admin\factory\Authors::delete_author( \S::get( 'id' ) ) )
+      \S::alert( 'Autor został usunięty.' );
+
+    header( 'Location: /admin/authors/view_list/' );
+    exit;
+  }
+
+  // zapis autora
+  static public function save()
+  {
+    global $user;
+
+    if ( !\admin\factory\Users::check_privileges( 'article_administration', $user['id'] ) )
+      return \S::alert( 'Nie masz uprawnień' );
+
+    $response = [ 'status' => 'error', 'msg' => 'Podczas zapisywania autora wystąpił błąd. Proszę spróbować ponownie.' ];
+    $values = \S::json_to_array( \S::get( 'values' ) );
+
+    if ( $author_id = \admin\factory\Authors::save_author( $values['id'], $values['author'], $values['image'], $values['description'] ) )
+      $response  = [ 'status' => 'ok', 'msg' => 'Autor został zapisany.', 'id' => $author_id ];
+
+    echo json_encode( $response );
+    exit;
+  }
+
+  // edycja autora
+  static public function edit()
+  {
+    global $user;
+
+    if ( !\admin\factory\Users::check_privileges( 'article_administration', $user['id'] ) )
+      return \S::alert( 'Nie masz uprawnień' );
+
+    return \Tpl::view( 'authors/author-edit', [
+      'author' => \admin\factory\Authors::get_single_author( \S::get( 'id' ) ),
+      'languages' => \admin\factory\Languages::languages_list()
+    ] );
+  }
+
+  //autorzy artykułów
+  static public function view_list()
+  {
+    global $user;
+
+    if ( !\admin\factory\Users::check_privileges( 'article_administration', $user['id'] ) )
+      return \S::alert( 'Nie masz uprawnień' );
+
+    return \Tpl::view( 'authors/view-list' );
+  }
+}