Update gstreamer install instructions to work with Ubuntu 16.04

Mission Item Status (Terrain/Alt): Hide based on amount of screen real estate

Special case handling of PX4 Flow connect

Fix AutoPilotPlugin::setupCompleteChanged signalling

Fix fly view waypoint line generation

ArduPlane: Add missing paramNameRemapMajorVersionMap method

ArduPilot: Fix GoTo Location

(Fix #5916) QGeoTiledMappingManagerEngineQGC: Use cameraCaps in QGeoMapType

Attempt at using default proxy settings.

Fix iOS build

Support VTOL transition

Fix NaN in convertGeoToNed

Calibration fixes

Respect FW_ARSP_MODE value for airspeed cal display

Allow setting a path and filename for the recorded video (optional)

Bugfix joystick input handling with multi-vehicle scenario