NevowServer : added addInfoString to allow extensions to declare some read-only strings to be displayed in settings. Also renamed addExtension in addSettings for clarity.
<?xml version='1.0' encoding='utf-8'?>
<BeremizRoot URI_location="LOCAL://">
<TargetType/>
<Libraries Enable_SVGUI_Library="true" Enable_Python_Library="true"/>
</BeremizRoot>