Fix: false negatives with original version initially in English.
Add browsing keyboard shortcuts.
Select the cancel button by default for confirmations.
Give focus to the translation of the entry when browsing.
Consider focus rather than display if available.
Fix: no focus if first entry.
Rewrite a bit the code.
Redistribute code.
Factor all the code related to buttons in the GUI to have all together and reduce complexity.
Fix: exception for the progress of the last entry displayed.
Fix: size slightly minimizing at each run.