FlightGear - Flight Simulator FGAddon

747-400: remove backup files

747-400: add Autopush

Douglas-Dc3: reduce help to the minimum so it fits on a screen and is not redundant with the tutorials.

Dragonfly:
Instruments: Hall wind meter takes flow direction and G-forces into account

Harrier-GR3: bug fixes in air-to-air refueling.

* Nasal/Controls.nas: replace the settimer loop with a listener. Disable AAR when the
user removes the refueling probe. Force aar.nas to re-scan the list of tankers in
the vicinity when installing the probe.
* Harrier-GR3-set.xml (systems/refuel/max-fuel-transfer-lbs-min): reduce to 3000 as
we use the probe-and-drogue system.

C140: fix property node

C140: improve mags model

Dragonfly: extend EIS2000G

Work on sound

QSeries: fix typo in PFD, thanks to legoboy for reporting