Updated MultiSelectTreeView.dll to 1.0.3 (avoid warnings in XAML bindings)
Wizard fixes

* Parameter name "#" is used as the count parameter in the Tx.T call
* Pressing the Enter key directly after changing a parameter name (not leaving the TextBox) did not use the new name in the generated code
Fix: Duplicated text keys were not properly added to the TextKeys list

Test case: References ("{=key}") to a just duplicated key failed validation (missing reference)
Fix: Really remove the window icon from dialog windows
Added string enumeration support
Fixed NullReferenceException in Tx.SafeText
Tx.SetWebCulture: Added parameter for override culture preference by user configuration
Improved feedback on inserting system keys
Fixed logical operator in Tx.Time segment checks