ArduCopter 3.6 tuning page fixes

Remove unused (and non-existing) library

Use a menu to delete a vertex

cameraMinTriggerInterval now comes from CameraCalc

from jenkins docs: When applied at the top-level of the pipeline block no global agent will be allocated for the entire Pipeline run and each stage section will need to contain its own agent section.

Remove usage of ATTITUDE in favor of ATTITUDE_QUATERNION

UnitsSettings: Use _settingsGroup for SettingsFact creation

Firmware Upgrade: Make default firmware more prominent

Switch OSX build to Qt 5.11.0

Fixed Wing Landing Pattern: Relative alt checkbox override

Clean up SettingsGroup name and settingsGroup

The idea here is to prevent people from accidentally flashing the wrong firmware

Survey: Allow VTOL vehicles to fly alternat transects

Add settingsGroup qualifer to settings override

Update ArduPilot flow URL

Camera/Transects unit tests and fixes

PX4 Optical Flow fixes

Transect alt mode fixes

Sensor Cal: Handle case where no mag present [continued]