added link to the atom feed (to be created)
now using cache to avoid re-generating the feed all the time
added type attribute to the atom feed link
replaced rss+xml with atom+xml
icon for the atom feed link
first version of the feed generation
fixed id and link href of the items in the feed
added item created dates to the feed
item images are now part of the items feed
item add code made a bit more legible
feed cache now has an expiration time