Bug 481550 - Implement canonical and alternate URLs
[fix bug 910406] Update Firefox OS screenshots
Merge pull request #1211 from alexgibson/bug-910406-update-firefox-os-screenshots

[fix bug 910406] Update Firefox OS screenshots EN, ES & PL
Merge pull request #1005 from kyoshino/bug-481550-canonical

Bug 481550 - Implement canonical and alternate URLs