Sections and sub-sections of this Development Code and the several parts or provisions thereof are hereby declared to be independent sections, sub-sections, parts and provisions. If any provision of this Development Code, or amendment thereto, or any application of any provision to particular circumstances is held to be invalid or unconstitutional by any court of competent jurisdiction, such decision shall not affect the validity of the remaining portions of this Development Code or amendments thereto, or the application of such provision to other circumstances.