[Pharo-project] [update 3.0] #30036

[Stéphane Ducasse]

30036
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Issue 5188 Stage 3: Announcement>> handlesAnnouncement:
        Cleaning after the changes.
        https://pharo.fogbugz.com/default.asp?5188
        
Move ui code of SmallDictionary to Tools package. 
Diff information:
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Tools-StephaneDucasse.1073
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Collections-Unordered-StephaneDucasse.153
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Announcements-Core-StephaneDucasse.40
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Announcements-Tests-Core-StephaneDucasse.12
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Collections-Strings-StephaneDucasse.250