JFG-548 no Web Ui

Should not been merge until new tree https://github.com/griddynamics/jagger/pull/359 to make it easier to change plotName fetching.

As last idea : 
metrics, validators has displayName field in xml schema.
metricAggregator`s name is metricAggregator`s displayName. id for metricAggregator creates on the fly (shields specific symbols that can crash link in Web Ui).

https://issues.griddynamics.net/browse/JFG-548