Fixed airport image to render centred on the airport location, rather than centring origin of image on airport loc
Moved a waypoint to compensate for airport moving to it's actual location
Else clauses in waypoint draws to catch new entry / exit points
necessary as they drew exit/entry points based on their location and didnt catch other locs. Should be changed in the future if we have time.
Aircraft spawned on the Airport takeOffPoint should be generated at altitude = 0, and then ascend to minimum altitiude.
Test for aircraft ascending from altitude = 0 towards a target altitude
Catching a flight being over a waypoint where it needs to land
If over landing point and altitude  = 0, report over waypoint
otherwise, flight descends and reports that it is not over the waypoint until it is at altitude 0.
Commenting for checkIfAtWaypoint to explain the nested if's catching the aircraft being over an exit point where it is required to land
The nasty nest of ifs isnt the tidiest way to handle this but it had to be caught here to prevent the flight being removed from the game when it flys over the airport at an altitude too high to land