3.30.1
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* Updates to GNOME Help (Andre Klapper)
* Updated translations:
  ca        (Jordi Mas)
  cs        (Marek Cernocky)
  de        (Piotr DrÄ…g)
  es        (Oliver Gutiérrez, Piotr Drąg)
  pl        (Piotr DrÄ…g)
  pt_BR     (Rafael Fontenelle, Isaac Ferreira Filho)
  sv        (Anders Jonsson)