Duplicated vocabulary records in display of index page

First, let me say this is an awesome module! It was exactly what I needed to organize my new site, which is short on blog content and long on book pages with technical articles. Thanks!

I did find one small bug. If you have multiple vocabularies tied to multiple overlapping node types, the index page shows the same term link lines multiple times. You just needed to change SELECT to SELECT DISTINCT in one particular query.

I've attached a patch against the 4.6 version which fixes this problem.

Again, thanks for a great module!

Scott