[Pharo-project] [update 1.4] #14427

[Esteban Lorenzano]

14427
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Issue 5531:     undo not wokring
        http://code.google.com/p/pharo/issues/detail?id=5531
        
-new ecompletion/ocompletion integrated
-some refactors without numbering

(this was a hard one :P)