autoedit: Fix checking the edittoken

EditPage::tokenOk() does more than just return the tokenOk member variable. It
recreates that variable from its request parameter. This means we have to store
the request and give it to EditPage::tokenOk() again (and again) on each call.

Change-Id: Ibe84605fb4a0c72b3816d31cfa4eeeb4e5ed69f8