Lot is a built in part of Farm, therefore should have a LotNumber and not be of IEntity, INamedDocument
Removed IEntity, FixedAssets and Employees from Lot.
Grove will be part of Farm. No need for GroveDto
Lot now contains a list of Grove and not a denomralized list of Grove
Changed Farm so that Lot/Grove and Sector can only be added through AddMethod()