Whenever it is determined that a transcript of all or some part of the trial or other proceeding is necessary to enable a person who is entitled to appeal, or to pursue another post-conviction remedy, to present such person’s cause adequately and it is further determined that the appellant or petitioner or movant is financially unable to pay for the preparation of such transcript, the district court shall order that the transcript be supplied to the appellant or petitioner or movant by the official reporter of the district court.