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.
The comments in FluoFactory give advice on which properties are needed for FluoClient and FluoAdmin.  Each different component (client, admin, worker, oracle, minifluo) has a method to check if required properties are not set and prints an error message if not.  While I think i have made it clearer for users, more work could be done on this.  However, it is tricky in that different components share properties so they cannot just be split up by component.