For purposes of this chapter, a conviction means a plea or verdict of guilty or a conviction following a plea of nolo contendere. An action to deny, revoke, or suspend the license or registration may be taken when the time for appeal has elapsed or the judgment of conviction has been affirmed on appeal or when an order granting probation is made suspending the imposition of a sentence, notwithstanding a subsequent order pursuant to Section 1203.4 of the Penal Code permitting withdrawal of a plea of guilty, or setting aside a verdict of guilty or dismissing the accusation, information, or indictment. The director shall take into account all competent evidence or rehabilitation furnished.