[admin] Use raw ids where possible and simplify scrobble inlines

vrobbler/apps/boardgames/admin.py

@@ -38,6 +38,7 @@ class BoardGameLocationAdmin(admin.ModelAdmin):
         "uuid",
         "geo_location",
     )
+    raw_id_fields = ("geo_location",)
     ordering = ("-created",)
 
 
@@ -49,6 +50,7 @@ class BoardGameAdmin(admin.ModelAdmin):
         "title",
         "published_year",
     )
+    raw_id_fields = ("publisher", "publishers", "designers", "expansion_for_boardgame")
     search_fields = ("title",)
     ordering = ("-created",)
     inlines = [