Advanced search: add YEAR and GENRE

[DSperber]

You've currently got three of the primary tag fields available in your "Advanced Search" dialog: artist, title, and album. I don't consider "location" to be relevant, at least for me.

Why not also include the two remaining tag fields which would really complete the type of "advanced search" I might be looking for: year and genre.

In other words, I might want to find "Christmas music (genre)" from "1971".