add JCR_ARTICLE and JCR_FILE dataresourcetype and related demo under

[zzj1213]

cmssite component by adding CMSS_DEMO_JCRPAGE1 and CMSS_DEMO_JCRIMAGE1. Also supporting using standalone jackrabbit server and make it configurable through jcr-config.xml. Need add jcr content first using the jackrabbit under example component.