I18n: Update translation pt (92%).

546 translated messages, 45 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation tr (60%).

358 translated messages, 233 untranslated messages.

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