Closes #121 - Combined properties classes into FluoConfiguration

Pull request for #121

Fluo Configuration extends Apache Commons Configuration. Created unit test and updated
implementation to use new configuration class.  Added methods to verify
if configuration is set properly for client, admin, worker & oracle.
I haven't looked this over thoroughly but I'm wondering if there's still a well-defined path for which properties should be set for which major functions- i.e. oracle vs. worker vs. mini fluo.