Move Linux to Qt 5.11.3

Survey: Remove Split Polygon support since it causes crashes

Support for new AltitudeFactTextField

Android USB: Add VID/PID for ArduPilot ChibiOS and DragonLink

Add VID/PID for ArduPilot ChibiOS and DragonLink

Move back to XCode 9.2

Move Linux to Qt 5.11.3

Add internal error case

Remove Split Polygon support since it causes crashes

Support for new AltitudeFactTextField

FW Landing Pattern: Make settingsGroup public for custom build overrides

Make settingsGroup public for custom build overrides

Replacement for #7152

Support STATUSTEXT_LONG

Move valueSetIsDistance to Fact so custom builds can override

Remove incorrect comment

Add support to receive NMEA streams via UDP

Fix startup crash on initial font change signalling qgc reboot required

Camera and Video Streams

Fix startup crash on initial font change signalling qgc reboot required

Keep track of recording time if camera doesn't provide it.
Make sure camera info is received (if camera ACKs the request)
Keep track of camera's heartbeat. Remove camera if not heard from after a while.
Update MAVLink

Allow plugins to control mainQmlWidgetHolder creation.

Check if qgcApp() actually exists before using it.