I18n: Update translation he (100%).

394 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation ja (100%).

394 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
ApplicationsMenu: fixed wrong initial icon size in some themes
I18n: Update translation pl (100%).

394 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).