Every individual with a developmental disability is entitled to enforce any of the rights guaranteed by this chapter by civil action or any other remedy available by common law or statute. In any proceeding to enforce these rights, the court may, in its discretion, award reasonable attorney’s fees and costs to a successful plaintiff. An individual with a developmental disability who is successful in an administrative proceeding may also be awarded reasonable attorney’s fees and costs. Any award of attorney’s fees and costs must be in addition to any actual or punitive damages to which the individual may be entitled.