Fixed FWN beat titling

[Paul Frields]

Pascal et al.,

I've fixed the function to get FWN beats a title based on their issue
# and beat. The node will get a title like "FWN 250 - Introduction".

What took me a while was figuring out that CCK content types have a
different array structure than the standard content types. In regular
Drupal content types, you can set a value with:

$form_state['values']['field_name'] = "New stuff";

However, the structure of CCK field means that you have to do some
fancier referencing:

$form_state['values']['field_name'][0]['value'] = "New stuff";

When I tried this at first and found it worked, I was worried that
type of referencing was somehow weird, but it turns out it was in fact
correct.

Note that this title setting doesn't retroactively change old beats --
it works during the form validation process (after initial entry and
before the items are submitted to the database), so it will only apply
to new content being created.

Paul