Merge branch 'master' of https://github.com/mavlink/qgroundcontrol into flyviewOverlay

* 'master' of https://github.com/mavlink/qgroundcontrol:
  Pile of bug fixes
  Permit firmware to send responses until stdout handle is drained
  Add mavlink console support
  Deprecation comments
  Fix plan view geofence display
  Fix mock link calls
  Mavlink submodule update