I18n: Update translation ast (93%).

219 translated messages, 16 untranslated messages.

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

235 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation ast (95%).

224 translated messages, 11 untranslated messages.

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