RavenDB-2478: implemented basic sqlReplication metrics server side only
RavenDB-2478 added some new metrics functions
RavenDB-2478 added some new metrics functions
RavenDB-2478: implemented matrics calls inside Insert and Delete operations
bug fix in SqlReplication
Merge branch 'RavenDB-2478' of https://github.com/maximburyak/ravendb into RavenDB-2478

Conflicts:
	Raven.Database/Bundles/SqlReplication/SqlReplicationTask.cs
RavenDB-2478: fixed some problems with the metrics unique ids and measuring of time
removed all time meter metrics from the system (left only time histograms)
some code refactoring:
unified all metric, histrogram conversions inside MetricExtension.cs,
moved SqlReplicaitonMtricsCounterManager to dedicated file,
access to sqlreplication metrics is now only from /debug/sql-replication-stats
RavenDB-2478: started working on UI part of statistcs
RavenDB-2478: implemented basic UI
RavenDB-2478: fixed percentiles not showing right
remove new line and tabs from merged index map
fix receiving stats for indexes with no name
- save the 'merged' collection in order to display it in the ui
- fix for edit index (wait for save index to complete before changing the url)
fix for index map/reduce remove first line
fix for deleting multiple indexes
Fixing tooltip message on the transformer creation/edit page
RavenDB-2478: some UI changes to sqlReplicationStats.ts and sqlreplication debug stats
Revert "RavenDB-2607 In memory indexing state optimization"

This reverts commit cd20c6f196d88c0930d7290dc7fb20676f5616db.