ADDED: a prototype of transaction creation
Merge branch 'master' of github.com:starrify/ymmbooking
AAA
Merge branch 'master' into liang

Conflicts:
	template/.DS_Store
	template/manage/flight.html
	template/manage/flight/flight.html
	template/trade/booking_history.html
	ymmbooking.py
FIXED: hotel_search
ADDED: flight transaction creation
ADDED: flight transaction history search
CHANGED: flightTransaction in database schema.
FIXED: /login with empty redirect_url
Merge remote-tracking branch 'origin/liang'
REMOVED: duplicate functions for routing /manage/* in ymmbooking.py