Added (very basic) spam filtering plugin support. Plugins can mark a message as spam by hooking into the spam check API, which is documented in functions.php. No spam checking functionality is built-in.
The images in this folder are from the Tango Desktop Project at
http://tango.freedesktop.org. The SVG files and the rendered PNGs are available
under the Creative Commons Attribution-ShareAlike license, which can be viewed
in the /licenses directory in the Enano package.