Another quick software update

I spent some time tweaking Engage: Publish and the "Consumer" module that I've written for consuming RSS feeds. I noticed a problem with pulling in RSS Items by trying to compare date/times. So instead of consuming items based on the datetime, we're now looking to see if an item already exists based on the title of the item and the author id. Ultimately I think it will require modification to check for both dates and titles, but for now we can remove any items that show up because of a simple title change.