ENG-80: fix Cache*ConfigEntity to avoid containing org.w3c.dom.* objects + Cache*ConfigResourceService's can now produce JSON output

git-svn-id: http://svn.terracotta.org/svn/ehcache@7767 b9324663-ca0f-0410-8574-be9b3887307d
ENG-80: deprecate services that produce XML

git-svn-id: http://svn.terracotta.org/svn/ehcache@7768 b9324663-ca0f-0410-8574-be9b3887307d