Added Support for UITabsetPanel.setVisibleAt(...)
Avoid NPE, if no tab is selected.
Unify line feeds, to be compatible don't matter which OS and which configuration in translation.
New Tab close logic in Genui.
Check Exception on tab close.
First fire event, and only if no exception occurs, remove the tab.
Remove tab also in technology, if it is not removed from genui.
Remove tab also in technology, if it is not removed from genui.