* Additional error logging and upgrade to node_redis v0.8.6

* Modified test cases for auth check based on the fact that node_redis no longer returns an error message when a password is supplied but not required
* Added logging for progressBus.sendMessage callback to trap if an error occurs.

Added error handling and logging for async updating of msgTable/progressTable for debugging

Debugging commit

Updated to node_redis 0.8.6, and changed test cases to allow for checking of password auth now that the redis client no longer returns an error.

Added some error logging to progressBus send message callback