Rdc: Rdc manifest return
Rdc: Rdc signature handler added.
Refactor: Embeding rdc-service as submodule
Client: Adding ListenableStream. Fixes #3.
Merge remote-tracking branch 'origin/master' into replication

Conflicts:
	RavenFS.Tests/ClientUsage.cs
Rdc: StorageStream added - not tested yet
Client: Removing useless argument in DownloadAsync
Client: Partial download support
Utils: NarrowedStream tested
Rdc: Parital download implemented
Refactor: Small
Synchronizing: Preparing tests infrastructure
Rdc: Synchronization - dev
Rdc: Synchronization sketch
Refactor: StorageStream has building methods now instead of constructor
Rdc: StorageStream - Write method - dev
Synchronization: knownServers section added
Synchronize: No exceptions in simple test
Synchronize: Works as proof of concept. Small issues resolved
Synchronization: Test fix