[FIX] initialize unsubscribed order books

Trying to get back to the original state of the order book as when it was created when retrieving an existing order book that had been unsubscribed.  Please review to make sure I have not done more or less than what is necessary for to accomplish that.
I don't think this is going to work unless you bind updateFundedAmounts. `self.updateFundedAmounts.bind(self)`.