[KPhotoAlbum] Delete images not on disk shouldn't put the files on the blocklist

[Robert Krawitz]

If I run "deletet images not on disk", and then delete the files, I'm
not given the option (in all cases, at any rate) to "delete files" or
"move to trash" -- the only option I have is to remove them from the
database. That puts those filenames on the blocklist.

If I later create files with those names, I won't be able to read them
in without editing the index.xml file to unblock them. This doesn't
seem right to me, but I'm not sure how best to deal with this.