quick fix to JigsawSetupDialog to make pointing default sigmas valid

        QTableWidgetItem *sigma = new QTableWidgetItem();

        sigma->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsEnabled);

        sigma->setText("0.0");

        sigma->setData(Qt::UserRole, QVariant(true));

        table->setItem(row, 3, sigma);

        // { NONE: N/A, ANGLES: 0, ANGULAR VELOCITY: 1, ANGULAR ACCELERATION: 2, ALL: 2 }