* chore(messages): npm run messages
This is the raw changes made by `npm run messages`, without any
manual reverts / backporting.
* fix(messages): Backport TranslateWiki hints (with edits)
Backport changes made to qqq.json by TranslateWiki editors to
messages.json, with some modifications.
See https://translatewiki.net/wiki/Template:Optional for details
of how the {{Optional}} template works.
* chore(messages): Apply backported messages.js changes to qqq.json
Also manually revert deletion of translation credits.
There is one notable exception: because the language is not supported
by Translatewiki, contributors to the Klingon translation
may submit PRs making changes to tlh.json directly.
Building
Blockly cannot use the files in this directory directly. Instead,
they must first be converted into executable .js files we call
"langfiles". This is done automatically as needed by the build
system, but you can also run this build step manually by invoking npm run langfiles; the output will be found in build/msg/.
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