Added PropertyChangeSupport to Appointment. #34
Updated propertyChange method. #29
Added creator to Appointment class.
Renamed CalendarControll and moved AppointmentControl methods to CalendarControl
Finished working on AppointmentListener.
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/no/ntnu/pu/control/CalenderControl.java
	src/no/ntnu/pu/gui/view/MainView.java
	src/no/ntnu/pu/gui/view/SidePanel.java
	src/no/ntnu/pu/model/Appointment.java
	src/no/ntnu/pu/model/Person.java
Removed unused import.