Apache Forrest code update (bug FOR-572)

code update
by
DC
(fixes bug FOR-572)

:

Add Cocoon Profiler block. Use this during development to list the
various sitemap pipelines and components that are being used, how
much time was used by each, whether each component uses the Cocoon
cache, and show the actual xml data.
See documentation.
Thanks to Ron Blaschke for the suggestion.