Pull firmware custom version from PX4

Set flying flag regardless of armed status

update APM Sub parameter metadata

Add stable APM Sub PX4-v2 firmware option.

USB modems

Fix PlanMasterController:sendPlanToVehicle

Initial localization work.

PID 0xea60 = 60000 , not 600000 (which is well beyond any valid PID)

ULog Geotagging Support v2

1. PX4Log parser is split off into its own class
2. New ULog parser implemented

Map Engine

* 'master' of https://github.com/mavlink/qgroundcontrol: (120 commits)
  More fixes for line sorting
  InstrumentSwipeView: update current page index on page change
  Bugfix for vehicle health instrument view
  Better error reporting for unknown command
  Optional camera mode support
  Update README.md
  Guided fixes
  Fix typo
  Solve problem with windRosePie Focus
  Add armed indicator for Sub
  Add USB json config for CF2
  Some simple fixes
  Correctly place firmware plugin instance data with Vehicle
  Survey area is always convex polygon
  Solve some typos
  Remove lost code and update z position of pie
  Change pie color with theme
  Change wind compass color with theme
  Make wind compass to be only visible in fixed-wing
  Add support for SET_CAMERA_MODE command
  ...

Add wind rose in survey pattern editor

Plan upload: Better error reporting for unknown command

Optional camera mode support

Plan: More fixes for line sorting

Bugfix for vehicle health instrument view

Guided fixes

Fix up some links to changed doc locations

- Altitude slider not showing up
- Continue mission not showing up in action list

CF2 Support