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.

- 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

commit 54c4e8fcc27a9582288ae2bc32938b3d231b9c3f
Author: Holger Brand <H.Brand@gsi.de>
Date:   Tue Dec 9 14:59:55 2014 +0100

    Prepare for release

commit 71ce3f512e5df06a067381df289d3643995a2a12
Author: Holger Brand <H.Brand@gsi.de>
Date:   Fri Dec 5 11:50:42 2014 +0100

    Remove error case to allow error in to be send to message logger.

commit 816992c5ab6d9c7cff133664a4d40265df1cfaa6
Author: Holger Brand <H.Brand@gsi.de>
Date:   Fri Dec 5 10:35:32 2014 +0100

    Add DSC Message Logger

commit 6f055c6eb569797fa9bccecce3ffb98d29c9c675
Author: Holger Brand <H.Brand@gsi.de>
Date:   Wed Dec 3 15:05:04 2014 +0100

    Check for empty PV-URLs.

commit 0ab1df95dcf2c1c370d430aa5b3d275b49f64da8
Author: Holger Brand <H.Brand@gsi.de>
Date:   Tue Dec 2 13:10:40 2014 +0100

    Use decimal point as decimal delimiter in ini-files and Initialize Attributes.vi
    Review ini-file. Condense them to one ini-file per package.