Add option of not receiving an offset in the checkNewMatrixPerformance function.

[fjandrad]

It might not be ideal but we could add a default behavior for estimating the offset when no offset is known or provided.

The default behavior to include would be :

[reCalibData.(ft),~]=recalibrateData(datasetToUse.rawData.(ft),calibMatrices.(ft),...
        'offset',zeros(6,1),recabInput{:});
    % take out offset in the filtered data for comparison
    offsetInWrenchSpace.(ft)=mean(reCalibData.(ft)-datasetToUse.estimatedFtData.(ft));
    reCalibDataNoOffset.(ft)=reCalibData.(ft) -repmat(offsetInWrenchSpace.(ft),size(reCalibData.(ft),1),1);
        offsetInWrenchSpace.(ft)=offsetInWrenchSpace.(ft)';

Dealing with the option from the varargin point of view needs to be considered