Merge branch 'master' into develop

* master:
  cleaned 2 spurious files
presumed to be working, no added tests, all green
wip on the client and some tests
no need to use /socket/ in the ws handler
making WebSocketAPI to react to messages
establishing web socket connections
introducing Ping and Echo
added BadCommand
AppController>>onOpen
fixed server side WebSockets, Echo now working
added class comments to all API commands
improved #connect and #disconnect in WebSocketAPI
better error handling in WebSocketAPI
introduced MaplessModel which has an id and createdOn modifiedOn and deletedOn dates
stopped using a deprecated method
MaplessModel are the ones with an uuid in the id and instance version
answering commands. We have a working WebSocketAPI>>sendCommand: aCommand do: anAnswerBlock onError: aBlock
wip RemoteMessageSend
some fixes
receiving remote exceptions