[lively-kernel] CouchDB authentification and permissions

[Roeder, Marko]

What I forgot to add is that now that Lively Kernel user get propagated to CouchDB, it is possible to make use of these usernames using CouchDBs design docs.
Therefore for example you can add a username to a document that has been created/updated or add additional permission checks whether you want some body create, update or delete documents.

	- Marko