- setCell will automatically remove cell in DISCARDED_STATE so remove

useless code
- catch exception in case of node known without any address
- rewrite way to handle node information message to retrieve node both
by uuid and/or address


git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@575 71dcc9de-d417-0410-9af5-da40c76e7ee4