Use logical filters for scrobble admin

No need to filter by video, but in progress and source are pretty handy.

vrobbler/apps/scrobbles/admin.py

@@ -13,7 +13,7 @@ class ScrobbleAdmin(admin.ModelAdmin):
         "playback_position",
         "in_progress",
     )
-    list_filter = ("video",)
+    list_filter = ("in_progress", "source")
     ordering = ("-timestamp",)