SLING-3027 SLING-3017 add new features (sling-auth-xing-login, sling-auth-xing-oauth, sling-scripting-thymeleaf) with tests

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1613299 13f79535-47bb-0310-9956-ffa450edef68