I18n: Add new translation hr (63%).

245 translated messages, 142 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation hr (65%).

254 translated messages, 133 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation hr (73%).

286 translated messages, 101 untranslated messages.

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