Settings page tweaked, added about handler
-small refactoring work in Coordinator, Driver, XmlTest, LedFlash

SimpleHttpServer.java:
-settings handler now places key/value pairs into a form for processing
-added about handler to embed contents of /inc/about.inc into template

-index.html, index.css:
-visiual tweaks.  Header and footer are glued to the top and bottom of the window.  driver list glued to the left side.  only the main content scrolls (see the about page for an example)
-moved include files (index.inc & about.inc & template.inc) into the inc/ folder for organization
-added about button to header