Fixes regarding comments on: https://github.com/typesafehub/activator/commit/8a7eba287699f967542fe5919170c8e58fa51423

Credit get browser helpers

Remove the Pong handler

Bind the SocketStream from within the callback functions instead of the lib itself

Remove useless console.log
Bring new sbt services using the event stream api
Fixes regarding comments on https://github.com/typesafehub/activator/pull/604
Suggestion for eventstream api
Bring new sbt services using the event stream api
update layout widget
Move breadcrumb in its own widget
Move omnisearch in its own widget
Move typesafe in its own widget
Update notification widget
Add appManager widget (the dropdown menu to switch apps)
Add appStatus widget (the shortcuts icons in navigation)
Update header widget
Add help widget
Update navigation widget
Update panels widget
update lists widget
Add menu widget
Update tutorial for the panel
Apply changes and clean