PropertiesConfiguration properties = new PropertiesConfiguration();
properties.load(propertiesInputStream);
// TODO: put other useful properties
properties.setProperty("user.home", System.getProperty("user.home"));
if(!properties.containsKey("siteUrl")) {
properties.setProperty("siteUrl", servletContext.getContextPath());
}
initDefaultSystemProperties(properties);
copyToSystemProperties(properties);