[uf-new] hAudio issues page updated

[Manu Sporny]

The hAudio issues page has been updated with the following:

* Redundant property issues
* Graphic buttons and 'rel-sample', 'rel-enclosure', and 'rel-payment

Please take a look at the page if you were involved in the discussions
on hAudio. Make additions to the page if you have any outstanding issues
that are not already on there:

http://microformats.org/wiki/audio-info-issues

We are going to make another pass at addressing the issues next week.

-- manu