we now wait to receive the roster before continuing connection (send presence, get vcard / bookmarks)

Not sure why this was removed (I added it in 3395, dkirov removed it in 3461) but it broke chatstates.  Readded.

[gjc] We register to session manager. so if we save session and Gajim was running, next time we see Gajim. ME: IT ALSO WORKS FOR SVN!

nothing to clean up

binding is performed there)