Added support for basic and advanced config options. What goes into

advanced and what goes into basic is discussable. I just made a 
proposal in config.xml

admin-root/config.html

@@ -43,6 +43,7 @@ running server. The server must be restarted for these values to
 take effect.-->
 This is still in beta, but it seems to work. Go ahead and give it a spin.</p>
 <div id="config_not_writable_warning" style="display: none;">Your config file is not writable, you can not change anything using this webpage</div>
+<div id="toggle_basic_advanced"></div>
 <form id="theform" method="get" action="#">
 </form>
 <div id="buttons"></div>