Adding 'quiet' boolean flag to Graphite backend connector to avoid connecting to Graphite when there are not metrics to report.
Applied feedback from pull-request.  The quiet option is effective only when the deleteIdleStats option is enabled.  The check for empty stats associative arrays has been made more efficient.
Updated unit test to include deleteIdleStats value of true
Merge pull request #345 from urlgrey/master.

etsy/statsd has not merged this yet. So, I've forked to cPanelScott/statsd
and will maintain this fork

Merge branch 'master' of https://github.com/urlgrey/statsd

Conflicts:
	backends/graphite.js
Updating README to explain the goal of this fork