g3000 v0.5.1

[cywang90]

Includes changes made for g3000 releases v0.5.0 and v0.5.1.

• Implemented measurement unit selection.
• Overhauled PFD autopilot display, airspeed indicator, altimeter, radar altimeter, minimums display, wind data display, angle of attack indicator, navigation status bar, NAV/DME info bar, and bearing info bar.
• fixed V Speeds on G3000 #1035
• fixed g3000 0.4.0 barber pole issue with Longitude mod #919
• fixed G3000 and GX #914
• fixed g3000-v0.4.1not following depicted approach path #941
• fixed g3000-v0.4.2 Altimeter setting does not show trailing zeroes #987
• fixed G3000 Speed Tape isses #988
• fixed G3000 mod - NAV (ILS) frequency auto load #1022
• fixed [G3000] Home button for "Timers" does not work #1058
• fixed [G3000] PFD ETE displays "Infinity+NaN" while GS is 0 #1059
• fixed [G3000] PFD speed tape displays 40 when stopped #1060
• fixed [G3000] AP indicator on PFD does not disappear with Autopilot disengage #1063

Lots of other behind the scenes changes related to the above, but all self-contained to the g3000 mod.