AN ORDINANCE TO AMEND CHAPTER 115 SECTION 25 OF THE CODE OF SUSSEX COUNTY ALLOWING FOR AN INCREASE OF DENSITY IN AR-1 DISTRICTS WITHIN COMPREHENSIVE PLAN GROWTH AREAS, PROVIDING FOR SPECIFIC CIRCUMSTANCES, FEES AND/OR CONDITIONS FOR OBTAINING SUCH AN INCREASE IN DENSITY AND PROVIDING AN INCENTIVE FOR THE PRESERVATION OF OPEN SPACE IN SUSSEX COUNTY