Moved zmq objects creation to Connect() to prevent a bunch of problems
with re-connecting.
CFB will try to re-connect if it can't connect to the historical data
server. Also added some logging and fixed a bug with front contract
requests.
Named CFB client used in historical data broker.
Fixed the bug that would cause a crash on startup when trying to use a
MySql server with a UTF8 default charset.
Some additional logging in the real time broker.