adds logic for when a cookbook is transferred by a non-owner admin and keeping a collaborator is selected, the owner is made a collaborator
adds logic for when a cookbook is transferred by a non-owner admin and keeping a collaborator is selected, the owner is made a collaborator

nellshamrell/supermarket,juliandunn/supermarket,robbkidd/supermarket,chef/supermarket,nellshamrell/supermarket,robbkidd/supermarket,chef/supermarket,robbkidd/supermarket,chef/supermarket,chef/supermarket,robbkidd/supermarket,juliandunn/supermarket,chef/supermarket,nellshamrell/supermarket,nellshamrell/supermarket,juliandunn/supermarket,juliandunn/supermarket