[IMP] 1/.  Improved attendees form
2/. css changes
3/. typo changes
4/. improved the test cases to meet the new features
5/. Fixed the issue 'if i add one attendee then sys will add two attendee(one from SO) that is wrong.'
6/. override the button_confirm to make the functionality works from website_event_sale
7/. Fixed the cron job issue
8/. Updated the attendee names in the SO lines when the ticket is booked online.
9/. SO line are generated per attendee.