Updated the monochromator's connection state to include the new CLSMAXvMotors states as well as the controls states.
Removed requirement for the beamline to be connected before viewing the PersistentView panel.
Implemented an ultra basic system for checking to see that the beamline is connected--and it only cares about the mono, scaler, and control sets right now. Added isConnected() virtual public getter, onConnectedChanged() protected slot, connected(bool) signal that's emitted when the connection state has changed.