I18n: Update translation ast (79%).

313 translated messages, 80 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation ast (93%).

367 translated messages, 26 untranslated messages.

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

371 translated messages, 22 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation nb (85%).

337 translated messages, 56 untranslated messages.

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