add delete holiday funtion
finish holiday managing
finish all manager function
gan jin save yige
Change number in Manager Interface
listingController
Create Show Managing Interface
partially finished Booking class
remove unused import
booking finished
modyfy listingcontroller and hostory interface
refactor listing
class Ticket & Booking finshed
Add show Managing Interface
fix error managing interface
fix bug show managing interface
Merge branch 'master' into Booking

Conflicts:
	src/controllers/SystemController.java
	src/views/HistoryInterface.java