RavenDB-2174: Some code refactoring around WebSocketsTransport
RavenDB-2174: some more code refactoring
Merge branch 'master' of https://github.com/ayende/ravendb into RavenDB-2174

Conflicts:
	Raven.Database/Server/AppBuilderExtensions.cs
RavenDB-2174: some code refactoring, started implementing new "watchTraffic" UI
RavenDB-2174: implemented watchTrafficConfig
RavenDB-2174: implemented basic watchTraffic
changed isActive class to 'pressed' and moved it to a common place in app.less
RavenDB-2174: Watch Traffic UI progress
RavenDB-2174: finished writing watchTraffic ui, before merging into the management view
preparing RequestManger for merge
Merge branch 'master' of https://github.com/ayende/ravendb into RavenDB-2174

Conflicts:
	Raven.Abstractions/Data/ChangeNotification.cs
	Raven.Database/Server/WebApi/RequestManager.cs
	Raven.Studio.Html5/App/common/httpTraceClient.ts
	Raven.Studio.Html5/App/viewmodels/logs.ts
	Raven.Studio.Html5/Content/app.css
Merge branch 'RavenDB-2174' of https://github.com/maximburyak/ravendb