Translation widget

[kruczjak]

It works like that: (using cookies)

• row with suggested language will automatically show if there is different language selected in browser and this language is available
• if someone clicked [dismiss], this row will never again appear
• if someone clicks on language on row/change language in language selector, it will automatically redirect to page with correct language (when there is no such page, it will fallbacks to English)

I haven't found better place/look for language selector yet :/

It's based on redesign branch.

[indirect]

@sailorhg when you have time, it would be great to get some input about the UX for translation options!

[bundlerbot]

☔ The latest upstream changes (presumably #309) made this pull request unmergeable. Please resolve the merge conflicts.

[colby-swandale]

ping @indirect do we still want to merge this?

[esasse]

This is now outdated and has conflicts. @kruczjak, do you still want to do this?

[duckinator]

Given how out-of-date this PR is, I'm leaning towards closing this PR and opening a pair of issues to replace it (with a link to this one):

1. An issue about adding a language selection drop-down.
2. An issue about guessing based on what the browser indicates (blocked by the first one).

[deivid-rodriguez]

Closing as suggested!