fixed nested CCs

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11283 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
added support to get the PropertyDescriptor instead of ConstraintDescriptors

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11284 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c