[Pharo-dev] [update 3.0] #30319

[Marcus Denker]

30319
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11278 Refactoring menu should not show some items for traits
        https://pharo.fogbugz.com/f/cases/11278


Diff information:
http://smalltalkhub.com/mc/Pharo/Pharo30/main/System-Support-MarcusDenker.889.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/NautilusRefactoring-MarcusDenker.105.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Nautilus-MarcusDenker.502.diff