Show calibration status of sensors on status output

[mmosca]

Current Behavior

INAV status will show status OK for sensors that require calibration, even when they haven't been calibrated. This may result in navigation not being safe, and the user with no clue for the cause.

Desired Behavior

On status page, instead of showing OK for uncalibrated sensors, show UNCALIBRATED.

Suggested Solution

Change status screen to show UNCALIBRATED for Compass, Acc and Gyro when appropriate.

Who does this impact? Who is this for?

This should make it easier to diagnose navigation unsafe issues.

[Phil-MC]

Definitely a good idea. Anything that helps diagnose faults is helpful, particularly when dealing with inexperienced users.