handling of new create messages at WON node; utility methods in WonRdfUtils
added RandomNumberService
extended URIService with createMessageEventURI
handling of new create messages at WON node (connect, needState, open)
handling of new create messages at WON node (close, hint, sendMessage)
Merge devel into feat-handling-new-messages
bugfixes
Merge feat-handling-new-messages into devel