appNGizer can't resolve location for AppNGizerConfigurer

fails with
org.springframework.beans.factory.BeanInitializationException: Could not load properties; nested exception is java.net.UnknownHostException: C

when ${APPNG_HOME} is a path like C:/path/to/appng

Therefore, appNGizer-servlet.xml should use

	<bean id="configurer" class="org.appng.appngizer.controller.AppNGizerConfigurer">
		<property name="location" value="file:/${APPNG_HOME}/WEB-INF/conf/appNG.properties" />
	</bean>

which will lead to working paths under both, Windows and *nix