FlightGear - Flight Simulator FGAddon

A380: Fix several of the issues noticed during QA check
- Update autobrake animations in 3D cockpit
- Revise keys description in help menu
- Correct JSBSim error due to excess <product>
- Add comm-radios instrument (re-enable ATIS)
- Instead of polling at 2hz, switch to setlistener for EFIS altimeter setting
- Correct animations for mode / range
- Enable heading-track switch animation (incorrect object-name)
- Add previews

787-8: Remove duplicated file that was unused.

Boeing 787-8:
- Remove spurious warning in JSBSIM file
- Correct Nasal error on init in anti-ice.nas
- Correct incorrect property reference in systems.nas
- Use sprintf to round off figures in cdu1 / cdu2.nas on departure / arrival pages.
- Correct errors in CDU / FMC causing breakage due to Nasal errors.
- Ensure sounds are audible (correct distance settings)

Changes approved by current maintainer, radi.

Dragonfly: Add throttle and wheel brake lever

J3Cub: Replace problematic aux.jpg with switches.png

Cessna 208B: fantastic new aircraft for FlightGear by chtadmin, the admin of Charter VA. Thanks to him, it is now available in FGAddon as well! For more information, see https://forum.flightgear.org/viewtopic.php?f=15&t=37542&p=369357

Lockheed P.38 "Lightning" : Fixed flap error (thanks OO ZVY)

J3Cub: Delete aux.jpg and other

777: Lars0817:
- Add Cabin Lights dialog (under 777-xxx) in the menubar
- Updated modern KLM 777-300ER) Liveries
- Added AFR-JonOne liveries
Revision 59

Dragonfly: MP-animation for humans, tail wheel, control sticks, rudder pedals