1) Changes "SCWebService" so that is no longer responsible for stopping the iOS network indicator on a successful WS call (now the responsibility of the individual WS Delegate upon its determination of "success" or "failure")
1) cleanups to the implementation of the Service classes to remove [executeServiceCall] from the derived classes; 2) makes the class be responsible for identifying its "requestType"
1) refactorings to use "initializeStatusUpdateRequest" instead of "initializeStatusUpdateService"