Modify table structure, so change some sql command. (Flight departure and destination from char to int)
Finish spec 4.2 (Airport management), modify edit too.
Modify layout.
Modify layout (header), finish spec 4.1 (country list management), modify table country (add id column).
Bug fix: listing planes 'from' and 'to' (because modify of table)
Add airport fool-prove.
Add ticket page.
Fix flights add/edit bug (cause of Nonetype check).
Modify layout (Add links)
Modify layout (CSS).
Finish part 3 ticket.