This primarily occurs when modifying article content. If 'saveXML' is
used following 'loadHTML' there is the possibility of strangeness, such
as a self-closing anchor tag.
Note that the DOMDocument used in 'classes/feeditem/atom.php' came from
'loadXML', but we use 'saveHTML' since we're returning HTML content.
1. move preferences to Feeds tab
2. update CAD comic with support for sillies
3. add support for loading updated/third-party filters from filters.local (would override bundled filters)
