Preference Dialog: When removing an entry, activation state of other elements get lost

[MicBag]

1. Add 3 servers
2. Activate all
3. Remove the first element

Result: The rest is deactivated
Exactly: All elements below are deactivated

Reason: No idea why.

[MicBag]

Fixed.

Reason: Tableviewer: Updateing the model (remove element) and a viewer refresh seems to "confuse" the viewer. You have to remove the element from the table viewer manually. A viewer.refresh() or viewer.setInput() does not do the work correctly. However...I'm still confused :-)