40341
14356 Replace Announcer>>#on:send:to:s senders in System-Announcements	https://pharo.fogbugz.com/f/cases/1435614355 Replace Announcer>>#on:send:to:s senders in SlotTests	https://pharo.fogbugz.com/f/cases/1435514352 Cleaning, fixing and documenting NautilusPugin	https://pharo.fogbugz.com/f/cases/14352

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