Simplified imports and cleaned up unused functionalities in `admin/views.py`. Switched `var` to `let` in `script.js` for better scope management. Adjusted `showOverviewWaf` function for consistency. Removed `check_services` decorator from `ServiceActionView`. Enhanced `Checker` class model and improved error handling in `CheckerView`. Added `update_checker_setting_for_server` method in `checker.py`.
Added return_master setting, removed unnecessary code, and improved exception handling throughout the project. Key updates include enabling return_master by default, simplifying database update methods, handling empty IP exceptions more appropriately, and refining JavaScript validations.
Corrected JavaScript methods to properly store language settings and trigger events. Fixed error handling in multiple scripts, and improved handling of keepalived version checks. Updated the requirements to use a specific ansible-core version for better compatibility.