- Fixed import and comment module problems.  Patch by Gabor.

> Currently the admin menu does not work for comment.module and import
> module. Import module has the problem of not taking care of the fact in
> the arg() function calls that the module is pushed one level down in the
> menu (similar to the user.module and block.modules problems already
> fixed). The comment.module has a problem with trying to translate an $op
> which comes from the URL (and is therefore not translated).
>
> The attached patch also fixes the bogus URLs in import.module help texts
> (as the module part is pushed down into /admin/node instead of /admin).