Updated schemas, fixed formatting bug in Settings Handler
-widget-schema.xsd renamed to module-schema.xsd.  Will be used for both widget and full page xml validation

Prefs.java:
-added getPreferenceDesc() to get the free form description of the preference

SimpleHttpServer.java:
-Settings handler attaches tooptip to each preferences that holds the free form description of the preference (mouse over the ? icon).
-free form description is passed through StringEscapeUtils.escapeHtml4() to format it properly

template.html:
-added additional css and javascript resource to (eventuall) animate tooptip on mouse-over.