[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.