Enable RSS feed

Dominic writes (091030):

Both of the feed URLs (RSS and iCal) have been broken by the upgrade, could
these be fixed please? It would also be good to add in redirects for
commonly referenced/bookmarked pages such as the home page and BringABox page
that are now 404ing.

I see no reason to keep the old url, we should use whatever url a Drupal site offers normally for this.

I don't know how Drupal RSS is normally provided, but I think it may be in core.  bicbw.  (johnw)