Parameter Editor Category->Group hierarchy support

Remove nmea serial port for mobile builds

WIP: Try turning iOS back on in Travis

Speed up pull request OS X travis builds

Fix unused variable

Use default minimum takeoff alt for guided takeoff

Fix logging

Formatting fixes

Make VTOL transition work

Switch OSX to Qt 5.9.3

Add NMEA GPS support for GCS position

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