- Updated authorization checks in product management, product attributes, configurations, software, and user management files to use 'permissions' for consistency.
- Ensured that all relevant pages correctly check user permissions for read, update, delete, and create actions.
- Adjusted session variable references to align with the new permissions structure across various modules.
- 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.
- Implemented API endpoint for managing software versions in `products_software_versions.php`.
- Created management page for software version assignments in `products_software_assignments.php`.
- Developed upgrade paths management functionality in `products_software_upgrade_paths_manage.php`.
- Enhanced software version details page in `products_software_version.php`.
- Added form handling and validation for software version creation and updates in `products_software_version_manage.php`.
- Introduced pagination and filtering for software versions in `products_software_versions.php`.
- Implemented success message handling for CRUD operations across various pages.
