Handling missing docs when using 'linked documents'
Handling missing docs when using 'linked documents'

fabric_view:possibly_embed_doc assumes the referenced doc exists and throws
badmatch if not. So I fixed that.

BugzID: 12535

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb