Implementation of a widget to show errors when executing and debugging code:
- A QDialog shows which exception was raised
- All exception are send like strings
- QTable shows types and value previously converted to string now
- New method added to UiController to show critical errors(exceptions) in the GUI
Bugfixes:
- Error when the run action fails and the debugger does not work anymore
- Blocking GUI when the debug process breaks
Fixes T4551
Ref T1625