Cancel reservations, error messages, and log out

Admins and users can cancel reservations. Admins have the option to
cancel with or without fee, and users will be assess a fee if the
reservation is within 24 hours. Error messages for log in and account
creation.
Merge branch 'master' of https://github.com/LockeWatts/CSCI-6050

Conflicts:
	RentalCarService/WebContent/customer/placeReservation-2.jsp