Add a dashboard widget that encourages users to translate WordPress

[joostdevalk]

I propose we add a dashboard widget for those people that are not using WordPress in their preferred language. This simple PoC in screenshots (I have code but need to clean it up a bit first) could work off of the GlotPress API on translate.wordpress.org.

We should read the users accept language header and use their primary language to see if we have a complete translation for that. If not, show them a link where they can start help translating, if so, show them how to switch their language.

See attached screenshots.

[joostdevalk]

WordPress in your language - switch

[joostdevalk]

WordPress in your language - translate

[markoheijnen]

Probably a dismissible warning would fit better. Like the one you get when you still use the automatic generated password.

[samuelsidler]

I agree with @markoheijnen. If core were to consider something like this, it would need to be dismissible at least on a per-version basis.

[markoheijnen]

Currently working on something related at ​https://wordpress.org/plugins/polyglots/.

[swissspidy]

Admin notices are quite limited in space. What about adding this to the welcome panel or perhaps the about screen?

[hugobaeta]

The mockups say something about a "preferred language". How is that established?

[TacoVerdo]

Replying to hugobaeta:

The mockups say something about a "preferred language". How is that established?

That could, for example, be based on the HTTP_ACCEPT_LANGUAGE header.
​This demo shows that pretty well.

[swissspidy]

Related: #23348

I think we should combine these two tickets as both are about contributing to WordPress.

[ocean90]

Replying to swissspidy:

Related: #23348

I think we should combine these two tickets as both are about contributing to WordPress.

Yep, makes sense.