Loads more SceneGenerator tests - now reads the IMorseBlocks and works out what it should actually be.
Add a MessageEndMarker (used when repeating the message).  Added a Morse-based extension to FrameBuilder, to make building scenes easier.
DRY up NotificationClient instances within all clients (and add one to Morse - no tests yet!)
Rewrite Server NotificationService tests to actually test something useful \ make them work