Follows-up I301f471f86ba2.
For ease of navigation, move Converter subclasses to a group called
"Languages", which for documentation purposes is a subgroup of
"Language". The next commit does the same for Messages* files,
and Language subclasses (done separately for ease of review).
Change-Id: If1cef9aa15f536ebaedd4477ad7453426e7f3b85
Update language fallback chain to zh-hans <=> zh-hant bidirectional to prevent adding translation
duplicates in zh and zh-hans.
Add en magic words in zh message file to prevent fallback to translations of language variants.
Bug: T286291
Bug: T296188
Bug: T252367
Bug: T278639
Related: I484d4cba1e16fce0f7c433a865f3acf676b818c1
Related: Idf39310b4b66f9c5f210d1717e0e47b9e598c13c
Change-Id: I3b30303118ae8cd87dc5f2016372f0de89a7b075
* Interface strings are now elsewhere
* MessagesQQQ no longer exists
* Prefer https for translatewiki.net
Change-Id: I76652ea94cca80441cd5d978029e4707ee41c4fd
The removed comments are included in MessagesQqq.php togehter with a lot more documentation
Add a link to translatewiki.net too to show users the way to improve translations.