Remove the global option to "Redirect local moderation pages to my.mollom.com"

Alternatively, we could replace it with an help text + link on the corresponding pages — if the respective forms are protected by Mollom; e.g.:

- on /admin/content/comments/approve if any comment form is protected
- on /admin/content if any node form is protected
- on /admin/people if the user registration form is protected

But that will also require some non-trivial code... I'm really not sure whether this is worth the effort.

Attached patch removes the redirect option entirely.

#2: mollom.remove-cmp-redirect.2.patch queued for re-testing.

Re-rolled.

Committed to all branches.