Add "filename" view to collections browser

[aquajon@…]

When viewing the individual collections (no the virtual directory) add the ability to switch to a "filename only" view. This view would show the actual filenames, and not the metadata names of the content.

I noticed yesterday while importing movies that a messed up a couple and entered the wrong movie title. Went into the collections browser and the folder it was in to find it again and "mark to refetch" but could not find it because I don't remember the metadada name I selected.

Additionally the "filename only" view should have a way to display the files that contain metadata or do not, maybe with a colored Sapphire to the left of the title. This would be an easy way to see what, if anything in your collection didn't not get properly imported.