[Pharo-dev] [update 3.0] #30130

[Esteban Lorenzano]

30130
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10614 Spec lack of taskbarIcon mechanism
        https://pharo.fogbugz.com/f/cases/10614
        
10622 enhance access to icons for each tool
        https://pharo.fogbugz.com/f/cases/10622

Diff information:
http://smalltalkhub.com/mc/Pharo/Pharo30/main/StartupPreferences-EstebanLorenzano.90.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Spec-Widgets-EstebanLorenzano.164.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Spec-Tools-EstebanLorenzano.106.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Spec-Core-EstebanLorenzano.115.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Polymorph-Widgets-EstebanLorenzano.812.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/NewList-EstebanLorenzano.41.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Polymorph-TaskbarIcons-EstebanLorenzano.18.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/NautilusCommon-EstebanLorenzano.139.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Nautilus-EstebanLorenzano.468.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/FamFam-Icons-EstebanLorenzano.23.diff