FYI: "wm-license-information-description" is contained in
WikimediaLicenseTexts.i18n.php [1] within the WikimediaLicenseTexts
Extension [2]
Also, in regards to your other question:
does that dump not contain all content
minus history?
Yes, this dump is essentially complete [3]
It took me a while to figure this out on my own, but MediaWiki
messages generally come from these locations:
* MessagesXX.php where XX is the language (EX: MessagesEn.php)
* The [[MediaWiki]] namespace in a given wiki
* Extensions and any of the .18n.php files contained within [4]
Hope this helps.
[1]:
https://git.wikimedia.org/blob/mediawiki%2Fextensions%2FWikimediaMessages/6…
[2]:
https://www.mediawiki.org/wiki/Extension:WikimediaLicenseTexts
[3]: Note that they do not have the User and Talk namespaces
[4]: For the last, I find the following extensions are generally
enough to include most of the basic messages
* CategoryTree.i18n.magic
* CategoryTree.i18n
* Cite.i18n
* Disambiguator.i18n.magic
* ImageMap.i18n
* ParserFunctions.i18n.magic
* ParserFunctions.i18n
* Poem.i18n
* Scribunto.i18n
* Scribunto.magic
* SpecialCite.i18n
* Wikibase.i18n
* WikibaseClient.i18n.magic
* WikiEditor.i18n
* WikimediaLicenseTexts.i18n
* WikimediaMessages.i18n