Nope, getting rid of them.

Given the removal of the `<input/>` in the template, the purpose of this change really becomes providing a custom field for the redirect URL. In our project, we had a custom template and it was doing an explicit `action="<url>"`, rather than `action=""`. Based on your reviews, I've changed our template.

So, if you like, I can submit a new pull request focusing entirely on the addition of `redirect_field_name` (plus the two unit tests), to keep the history clean.