ArduPilot: Only force MISSION_ITEM_INT if vehicle support bit is set

Master cherry pick

Fix Radio button problems

Mobile File Dialog: Fix file extension appending

Bring back visual sequence number in map item indicators

Bring back visual sequence number in map item indicators

Fix bad cast causing loss of precision with sequence numbers

Plan - Terrain Status: Vertical index display. Click anywhere in bar.

Vertical index display. Click anywhere in bar.

Fix bad cast causing loss of precision with sequence numbers

Add Low latency mode for video

Add "sync" option to gstqgcvideosinkbin

Cherry pick from master

More changes to ArduPilot manifest lookup

Cherry pick from master

Start Mission: Better error message

Flight mode fix, cherry picked from master

Plan: Default for terrain display is visible

Add note about ADSB server settings

Backported fixes

Better error message

Add note about ADSB server settings

Plan: Correct handling of terrain ready when loading back from file

Correct handling of terrain ready when loading back from file

More changes to ArduPilot manifest lookup

fixed preflight sensors check

Parallels build fix

Plan: Add support for takeoff item required

Plan: Add support for takeoff item required

Mobile file dialog: Handle multiple extensions correctly