feat: jazzband#259 Replace raw_id field with autocomplete_field as it…

…'s more practical when searching for user, although may affect performance of the form in large number of sets

invitations/admin.py

@@ -14,7 +14,7 @@
 @admin.register(Invitation)
 class InvitationAdmin(admin.ModelAdmin):
     list_display = ("email", "sent", "accepted")
-    raw_id_fields = ("inviter",)
+    autocomplete_fields = ["question"]
 
     def get_form(self, request, obj=None, **kwargs):
         if obj: