I18n: Update translation bg (100%).

81 translated messages.

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

81 translated messages.

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

81 translated messages.

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

81 translated messages.

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