Downloadable mobile application for use in the food service industry and by food service industry vendors and customers, for use in purchasing, ordering and processing payments, and enterprise and manufacturing resource planning for maintaining day-to-day business activities such as accounting, procurement, marketing, and supply chain management; downloadable software in the nature of a mobile application for use in the food service industry and by food service industry vendors and customers for enterprise and manufacturing resource planning for use in managing and integrating business processes with respect to purchasing, ordering and paying for food services