The "Obfuscate" action should be foolproofed

[Kellindil]

Right now, statting the obfuscate action on a model will only show the following as the sole warning:

This message should be tweaked a bit :

1. Make it an error message : a red "error" icon should ensure that users will be more inclined to reading the message instead of simply clicking on "enter".
2. Change the initially focused button to "Cancel" instead of "OK" : a distracted user could click on enter/ok without paying attention to the actions he's doing. It'll be much better to do nothing instead of destroying his model in such a case.

Furthermore, I believe the obfuscation shouldn't be done in-place. The model should be copied first into a new project, then obfuscated. This way the user will still have his original model safe and sound after the obfuscation.