Refactor. Tree node can contain several metrics now
Implemented rule to unite many metrics under single node in control tree
Temp commit to switch to other branch
Refactor - removed unnecessary parameter taskIds from PlotDataProvider interface
Refactor - now every MetricNameDto knows where it comes from = where to take values
Plots can be fetched for MetricNodes => one plot with several metrics (lines)
Partially working solution (not finished)
All plots are fetched / removed by MetricNode => single MetricNode = single plot in Metric tab
code cleaning
before merge with master
merge with master
clean code, fixed bugs in gwt-servlet and CommonDataProvider
Merge pull request #427 from dlatnikov/JFG_637_metrics_on_single_node

Jfg 637 group many metrics under single node of control tree