eb8307cb3b
- Added one-click unsubscribe functionality with token generation and verification. - Introduced a new model for tracking one-click unsubscribe audits. - Enhanced newsletter campaign management with the ability to send campaigns immediately. - Implemented a scheduler for dispatching due newsletter campaigns. - Updated views and templates to support one-click unsubscribe and campaign previews. - Added management commands for running the newsletter scheduler. - Removed obsolete SSL certificate file. - Updated entrypoint script to handle different application roles.