I18n: Update translation nb (90%).

196 translated messages, 20 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation uk (94%).

205 translated messages, 11 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation de (98%).

213 translated messages, 3 untranslated messages.

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

216 translated messages.

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

216 translated messages.

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