Now Airports appear on the left on click
Fixed XML

-Now it remembers the airports information, including location.
Added code to prevent duplicates
Added a method to delete Airports

-Added a method in figure which tells if the figure is related to a
QPoint. Its primary use is when the user deletes an airport.
-Now if the user right clicks a point a prompt is shown and the airport
is deleted from the graph and all related graphics as well.
Fixed a bug with Connections

-Now the connections are properly stored in the XML file
Fixed yet another bug in Connections

-There was a problem in the way the XML file is loaded. Airports that
were not loaded could not be used as destinations in connections from
the existing ones.
Added a client dialog