(*) Peer has new fields person_ids and site_ids

(*) Peer has new fields person_ids and site_ids
    also the former person_id field gets renamed as auth_person_id
(*) new method GetPeerName to access remote plc's name as configured in PLC_NAME
(*) System slices are cached - assuming PLC_SLICE_PREFIX are different, this is no problem
    so GetSlivers filters out remote system slices
(*) RefreshPeer returns *remote* peer name as 'peername'
    formerly 'plcname' returned *local* plc name
(*) Caching mechanism now should be operational in 3+ peers federations,
       that is to say GetPeerData returns only local and caller's objects, not third-peer's
       this requires various plc names to be correctly up to date
(*) RefreshPeer attempts to ensure this is true after a few hiccups,
       this might get improved once we have peer authentication
(*) various docs updated