WIP introduce snapshots in pss
cmd can now set websocket host for pss
removed binary log garbage
moved baseaddr get to main pss api
changed pssclient constructor sig to return error
documentation
removed all Pss in symbol names whereever possible (and sensible)
discovery switch in hive now prevents add of suggested peers
this is probably not a permanent solution
bzz and pss now started from swarm.go,
Outputs from bzz/pss Protocols() and APIs()
are appended to the Swarm methods
