Fixed RSS feed url

Fixed RSS feed url
Apache had issues with printing out the first line of the rss header
because of the "<?xml".

    application/config/routes.php
    application/controllers/feed.php
    application/views/feed.php
    application/views/header.php
Added image functionality to entry_model & rss

Added image functionality to entry_model & rss
    application/models/entry_model.php
    application/views/feed.php