#1112 Duplicate finder should be able to ignore titles by language

[Darrah Chavey]

If I change my preferences to only showing me English titles, and I run a duplicate finder report on someone like, say, Ray Bradbury, it should only show me the duplicate concerns about English language titles. As it is now, it shows me page after page of duplicates pairs that vary by translators, essentially hiding any English duplications amongst all those.