en to unknown language translation catalogue (3 entries)

[ctx: MainWindow]
en: %1 of %n items selected
target[0]: %1 of %n item selected
target[1]: %1 of %n items selected

[ctx: MainWindow]
en: %n bytes
target[0]: %n byte
target[1]: %n bytes

[ctx: MainWindow]
en: %n items
target[0]: %n item
target[1]: %n items
