Use consistent Altitude Mode labeling

Use new extraUnitField

Show extra unit in small font

Reduce space between graphic and text

Use standard Altitude Mode labeling

Add new file

Fix double tile download error reporting

Prevent double reporting of tile download errors

Offline Maps: Allow custom build settings overrides

Object ownership handled by SettingsGroup base class

Add support for ArduRover MockLink

Add FOLLOW flight mode

Heading: Switch from Radians to Degrees

Work around quirkiness with ArduPilot and LOITER_* NaN handling on heading.

No camera commands for ArduPilot

BUGFIX: When scanning from the top the starting altitude shall be equal to the structure altitude.

Hack around ArduPilot problems with unsupported NaN in Loiter commands

Wildcard connect to all Hex boards

Grouped logging options within General Settings

Fix incorrect text

Fix toolbar logo visibility

Copter 3.7 CH#_OPT -> RC#_OPTION name change