Save agent and jid in SocialItem as attributes.
Save agent and jid in SocialItem as attributes.

git-svn-id: eb1f1cc1c85a2360c7c4a73c360b88a184bcc8ce@2223 afeded8d-2dbf-ebe2-555a-a28d15d75c70

exic/spade2,exic/spade2,exic/spade2