uses ember for reporter REST API
adds support for deleting metric
unit tests for h2datastore; fixes deleting metric
renamed interval in metric to frequency; matches db
added unit to metrics
adds count-by-interval and reorganises REST API
Changes log order to display settings used. Helps when troubleshooting
adds default values when creating metrics
adds default values when creating metrics using udp
supports * at the end of the metric name to get children metrics too
adds new operator - derivative