encapsulate getMin/getMax
add findAll-method and spec2 tests to Metric-Model
add JS-Class 'MetricGroup' which can be used populate multiple metric-objects to a MetricSeries object.
add Metrics.listByNameJson and change routes/naming for Metrics.list to Metrics.listByTargetJson
generalized RegionMetricChartView to MetricChart view (should be able to work all metrics now)
add cluster-history graph showing overview over the cluster
Compaction-History is now grouped by table-name
Compaction-History graph now shows correct colors
remoove info
Merge branch 'topic/compaction-metric' into next
fix the position of the refresh text
add "Compactions" to tooltip of Compactions Chart