use static channels for remote syncing instead of subscribing/unsubscribing 5 channels for every connection
don't call non existant transport onDisconnect
Merge pull request #1371 from surespot/channelfix

Use static channels for node syncing.
Release 0.9.17
Merge branch '0.9' of https://github.com/LearnBoost/socket.io into 0.9