Replace some TVDB id that no longer exits by replacement ones, or by movie,ova,web if completely disappeared from TVDB.

1322 remove mapping to 0 when no conflict
1428 mark as unknown
1532 needs a <before>;1-2;2-4;3-5;4-9;</before> as tvdb has missed that
3386 remove mapping to 0 when no conflict
3626 mark as unknown
3640 mark as unknown (and leave season as 0) as it can be linked to a series
6470 season 0 mapping
6473 add tt2368669 so we get tmdb fanart
7015 looks like full-on yaoi, so should be marked as hentai