add a feed_hash, so if a feed doesnt return a 304 not-modified-since header, we can do a quick check to see if its recent. tabs2spaces for the rest
add description to urls
functions to get a list of feeds (for updating), updating feed info (title, last_checked) and saving urls for a feed when it is fetched
start of a cron system to fetch feeds and add new urls to the list for viewing