I18n: Update translation es (100%).

111 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation is (96%).

107 translated messages, 4 untranslated messages.

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

111 translated messages.

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