Fix a handful of little bugs

Refactor of manual scrobbling missed an import
KoReader book removed in sqlite fails import
Looking up album by name and artists screws up on MBid unique

vrobbler/apps/music/utils.py

@@ -50,7 +50,9 @@ def get_or_create_album(
         )
         return
 
-    album = Album.objects.filter(artists__in=[artist], name=name).first()
+    album = Album.objects.filter(
+        musicbrainz_id=mbid, name=name, artists__in=[artist]
+    ).first()
 
     if not album and name:
         mbid = mbid or album_dict["mb_id"]