Refactor user session handling and permissions management

- Updated session variables to use 'authorization' array instead of 'username' for user identification across multiple files.
- Introduced a new function `getUserPermissions` to consolidate user permissions retrieval based on assigned roles.
- Modified API calls to use the new authorization structure and updated endpoints to v2.
- Enhanced language support by adding 'PL' to the list of supported languages.
- Cleaned up redundant code and improved session management during user login and registration processes.
- Added a new API endpoint for fetching user permissions based on user ID.

cronjob.php

@@ -5,7 +5,7 @@ include_once './assets/functions.php';
 include_once './settings/settings_redirector.php';
 include_once './settings/config_redirector.php';
 
-if (debug && debug_id == $_SESSION['id']){
+if (debug && debug_id == $_SESSION['authorization']['id']){
   ini_set('display_errors', '1');
   ini_set('display_startup_errors', '1');
   error_reporting(E_ALL);  
@@ -62,12 +62,10 @@ foreach ($communications as $communication){
 $token ='';
 
 $data = json_encode(array("username" => interface_user, "password" => interface_pw), JSON_UNESCAPED_UNICODE);
-//Secure data
-$payload = generate_payload($data);
 //API call
-$responses = ioServer('/v1/authorization', $payload);
+$responses = ioServer('/v2/authorization', $data);
 //Decode Payload
-if (!empty($responses)){$responses = decode_payload($responses);}else{$responses = '400';}
+if (!empty($responses)){$responses = json_decode($responses);}else{$responses = '400';}
 
 if ($responses === 'NOK' || $responses === '400'){
   //Not allowed