Upgrade to Metrics 3.0.1
Add JVM metrics to MetricRegistry.

This allows the JVM metrics to be exported along with the application
metrics.
Merge pull request #13 from deverton/jvm-metrics

JVM Metrics
Ensure metrics 3.0.1 jars are included in war
Bumped for release
Added metrics dependencies new in 3.0.1
Bumped for patch release