* Drop gs-browse-web-firefox.page and use conditional content for downstream
in gs-browse-web. Distributors might want to add their distro there if they
ship Firefox by default.
* Updated translations:
as (Piotr Drąg)
gu (Piotr Drąg)
id (Andika Triwidada)
pt (Pedro Albuquerque)
sk (Peter Mráz)
sv (Anders Jonsson)
zh_HK (Piotr Drąg)
