§ 820. Severability. If any section of this article or the application thereof to any person or circumstances shall be adjudged invalid by a court of competent jurisdiction, such order or judgment shall be confined in its operation to the controversy in which it was rendered, and shall not affect or invalidate the remainder of any provision of any section or the application of any part thereof to any other person or circumstance and to this end the provisions of each section of the article are hereby declared to be severable.