I18n: Remove broken / unsupported translations.

See http://users.xfce.org/~nick/broken-i18n/ for files and logs.

Use https://www.transifex.com/projects/p/xfce/ to upload fixed versions or request a translation team.
I18n: Add new translation it (72%).

387 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Add new translation nn (72%).

387 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Add new translation pt_BR (72%).

387 translated messages.

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

387 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Add new translation es (55%).

214 translated messages, 173 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Add new translation en_AU (100%).

387 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation es (57%).

223 translated messages, 164 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation es (58%).

228 translated messages, 159 untranslated messages.

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