OP-1384 gyro calibration will not zero revo board rotation anymore
OP-1384 minor changes to thermal calibration textual instructions
OP-1384 updated calibration help text
OPO-1384 thermal calibration ui : changed label Variance back to Gradient
Merge remote-tracking branch 'origin/filnet/OP-1384_revo_board_rotation_is_cleared_by_other_calibration_steps' into next