Log Message:
Update to 2.18.0:

Version 2.18.0
--------------
* Updated User Guide (Joachim Noreiko, Chris Fox, Luca Ferretti)
* Updated translations:
  it     (Luca Ferretti)
  sv     (Daniel Nylander)
  pt_BR  (Jonh Wendell, Leonardo Ferreira Fontenelle, Pedro de Medeiros, Raphael \ 
Higino)
  fr     (Christophe Bliard)
  ar     (Khaled Hosny)
  en_GB  (David Lodge)
  pa     (A P S Alam)
  es     (Francisco Javier F. Serrador)

Version 2.16.1
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* User Guide
  Better wording for writing CDs (Chris Wagner)
  - New Translations:
    sv: Daniel Nylander
  - Updated Translations:
    it: Luca Ferretti
* Accessibility Guide
  - New Translations:
    sv: Daniel Nylander
  - Updated Translations:
    es: Francisco Javier F. Serrador
    it: Luca Ferretti
*System Administration Guide
  - New Translations:
    sv: Daniel Nylander