MOBILE-87 Upgrade to docbook reference plugin 0.2.7
MOBILE-87 Upgrade to docbook reference plugin 0.2.7

royclarkson/spring-mobile,ChunPIG/spring-mobile,wilkinsona/spring-mobile,amuzhou/spring-mobile,spring-projects/spring-mobile,wilkinsona/spring-mobile,jonestg/spring-mobile,jonestg/spring-mobile,ramansahu/spring-mobile-master,ChunPIG/spring-mobile,amuzhou/spring-mobile,treejames/spring-mobile,spring-projects/spring-mobile,royclarkson/spring-mobile,treejames/spring-mobile,ramansahu/spring-mobile-master