Autocomplete, path_lookup, and admin link not working

As you can see in the patch (commit comments) I had to change some things to get it working with node reference fields.

The first thing was that I used an autocomplete widget to define my redirect destination which had no matching case in the switch structure.

Than the lookup of the path was always coming back empty from drupal_lookup_path. (If you want to use it instead of drupal_get_path_alias there is still an argument missing.

Finally the link in the admin message missed an "/" on the beginning to make it working and not just putting it on the end of the current page.

Hopefully this helps to make the module better. Thanks for your work.
regards
Marcus

P.S.:
@todo: I think we have to check for other widget names like user_reference_autocomplete as well but I didn't look into this.

You are right. Added base_path() to path instead of changing the string in the t() of the message box. Which was a bad idea also as a translation would break.

New version enclosed.