Coinffeine/coinffeine — pull request #115 by sortega (2014-04-07 11:05:24+00:00)
Title: Refactor BrokerActor to simplify cake pattern

**Description:** refactor BrokerActor to use an initialization message and simplify the cake pattern. Also take advantage to the opportunity for using `ProtocolConstant`s instead of magic numbers, extracting some functionality to auxiliar classes and refurbish the actor tests.

**Testing:** tests pass

**Reviewer:** @gotoalberto