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.

softwaretool.php

@@ -1,7 +1,7 @@
 <?php
 defined(page_security_key) or exit;
 
-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);
@@ -9,11 +9,11 @@ if (debug && debug_id == $_SESSION['id']){
 
 $page = 'softwaretool';
 //Check if allowed
-if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
+if (isAllowed($page,$_SESSION['authorization']['profile'],$_SESSION['authorization']['permission'],'R') === 0){
     header('location: index.php');
     exit;
 }
-$bearertoken = createCommunicationToken($_SESSION['userkey']);
+$bearertoken = createCommunicationToken($_SESSION['authorization']['userkey']);
 
 //+++++++++++++++++++++++++++++++++++++++++++++++++++++
 // PAYMENT RETURN DETECTION
@@ -201,7 +201,7 @@ if (isset($_GET['equipmentID'])){$returnpage = 'equipment&equipmentID='.$_GET['e
 
 
 //SHOW BACK BUTTON ONLY FOR PORTAL USERS
-if (isAllowed('dashboard',$_SESSION['profile'],$_SESSION['permission'],'R') != 0){
+if (isAllowed('dashboard',$_SESSION['authorization']['profile'],$_SESSION['authorization']['permission'],'R') != 0){
   $view .= '
       <div class="title-actions">
         <a href="index.php?page='.$returnpage.'" class="btn alt mar-right-2"><i class="fa-solid fa-arrow-left"></i></a>