FlightGear - Flight Simulator FGAddon

Sync fgaddon from https://github.com/legoboyvdlp/A320-family

* Many bugfixes to the fuel model

* Addition of working wind pages to the MCDU

* Addition of revised pneumatics system with working warnings

* Displays: fix effect (remove weird shadows that sometimes happen)

* Canvas: fix for OPCODE error

* ELEC ECAM page: fix galley indications

* Switch to dynamic function for all dynamic pages in the MCDU

* INITA: stop input to R1 / L2 if temporary exists

* Load cost index automatically if you try to enter ZFW with no cost index set

* Add clip bar for ground reference

* Sounds: cleanup sound samples by Timi

* Control: Add support for seperated tiller, and fix NWS to match FCOM

* VC: Improve the way the tiller is animated

* Control: Fix actuator rate NWS

* Sim: Fix bug in zoom-views

* Bugfix for DIRTO - thanks to julien for reporting!

* Bug-fix for manual approach speed selection

* Will check distance before deleting waypoint. This seems more reliable, in DIRTO

* Fix vapp, speed logic improvements

* Display speeds in PFD when in specified phase

* Splash screens by LemiCandy

* Bugfixes for the navdisplay

* New splash screen by SXSA

* Add ability to load approach vias and correct ARRIVAL page

* RMP - NAV radios enabled

* Modified GUI colour scheme

* Show flightplan altitudes in MCDU

* Formatting: remove need for leading zeroes, sprintf() on wind_heading / magnitude

* Holding patterns - populate information from database on HOLD page, if exists. Fix for LAT REV

* Improvements to winds format entry, fixes for nasal error

* Fix RAD NAV

* Bugfix nasal error

* Ground services menu optimizations mentioned in #151

* Bugfix for loading flightplans - thanks LemiCandy!

* Using a single property for all gear chocks #151

* Set constraints on FPLN

* Bugfix for landing - reset arrival index (thanks @stdg!)

* Experimental update to FWC logic to fix spurios warnings

* Bugfixes to failures dialog

* Improvements to ZFW/ZFWCG (correct order, add constraints, check decimal size)

* Several major bugfixes reported by @julienlengele - many thanks!

* Bugfix for ARRIVAL page

* Bugfix for newer versions of fg

* Bugfix for save last cost index

* Bugfix DIRTO page

* Add tyre screech from 172

J3Cub: Optional variable pitched prop (PA-18 only)

J3Cub: FG1000 panel implementation (by Stuart), missed a couple files

J3Cub: FG1000 panel implementation (by Stuart)

J3Cub: More tutorials

PA28: fix option loading bug, fix stepMagnetos() bug

an24b: reinstate fdm/jsbsim/fcs/throttle-pos-norm on init. Fixes #2297.

PA28: Bugfixes

PA28: Add different panel texture functionality

Dassault Mirage IV: Bumpmap added, FDM revision, cosmetic improvements, file reorganization.