Corrected problems in the Connect Core.vi which could lead to unnecessary commits of already existing shared variables. In fact, the last version was just not working properly.

Modify custom event registration in CS++GUIActor. (An already configured event refnum can not be modified later in oder to add more custom events.)

Repair Do.vi. It was broken, wrong wiring, for unkown reason.

* MainDev:
  Summay comment: - Add DSCManager - Create SV and process if not existing - Modify PV & AE Handling accordingly. - Modify GUI Event Handling according to changes in base class - Add Introspection

- Add DSCManager
- Create SV and process if not existing
- Modify PV & AE Handling accordingly.
- Modify GUI Event Handling according to changes in base class
- Add Introspection

Its basically working, some timing problems need to be investigated.