UI improvements, fixed infinite loops with invalid entries
Merge branch 'master' of https://github.com/tkajder/AirportReservation into Seth

Conflicts:
	a.out
Merge branch 'Seth' of https://github.com/tkajder/AirportReservation into Seth
Merge branch 'Seth' into mike

Conflicts:
	a.out
	airport.cpp
Merged mike and Seth, updated .zip