[IMP] 1/. Fixed the cron issue and removed print and reused some code.
2/. Improved the flow of the FREE ticket where no SO will be generated now for the FREE tickets.
3/. Improved test case accordingly.
4/. Module website_event_track will be installed on the click of Manage advanced features.
5/. Added csv for the event.event.ticket
6/. Added another action for the attendees from the kanban.