Using a SmartBusinessEntityLookup as an Embeddable Editor for the SmartUpdatableBrowser

SCL-111 enabled the use of a SmartBusinessEntityLookup as an Embeddable Editor. 

The SmartBusinessEntityLookup does now implement the IEmbeddedSmartEditor interface. Through this Interface, the SmartUpdatableBrowser can communicate with the lookup.

The OwningGrid property of the SmartBusinessEntityLookup instance needs to be assigned to the grid that owns the cell which references the lookup as it's EditorComponent.