Commented Feature: Implement all missing messages of the Streaming API [1857]

See all the existing messages here : https://dev.twitter.com/docs/streaming-apis/messages#Friends_lists_friends
Comments: Associated with changeset 34583: Version 0.9.0.0
- Added MessageSent and MessageReceived events to the UserStream
- Added an interface ITrackableStream to separate the concept of trackable stream and TrackManager
- Added ExcludeFromCodeCoverage for some Wrappers