- Made ChatProcessor's "@status" monitoring case insensitive.

- Made ChatProcessor track the XMPP MultiUserChat object, rather than
  StatusBot. Previously, when StatusBot detected a loss of
  connectivity and tried to connect, a new instance of ChatProcessor
  would be created, and all the users' states would revert to what was
  configured.

- Made ChatProcessor send a message when the day's status roundup starts.

- Updated StatusBot to support the changes in ChatProcessor.