https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/BlueSpiceSubPageTree/+/master/LICENSE by @Ljonka says it is GPL3
https://www.mediawiki.org/wiki/Extension:BlueSpiceSubPageTree by @Osnard says it's GPL2 or later.
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/BlueSpiceSubPageTree/+/master/LICENSE by @Ljonka says it is GPL3
https://www.mediawiki.org/wiki/Extension:BlueSpiceSubPageTree by @Osnard says it's GPL2 or later.
Change 467283 had a related patch set uploaded (by Pwirth; owner: Pwirth):
[mediawiki/extensions/BlueSpiceSubPageTree@master] Clearify license. T206363
Change 467284 had a related patch set uploaded (by Pwirth; owner: Pwirth):
[mediawiki/extensions/BlueSpiceSubPageTree@REL1_31] Clearify license. T206363
All Extension help pages for BlueSpice* in https://www.mediawiki.org/wiki need to be updated
Change 467283 merged by jenkins-bot:
[mediawiki/extensions/BlueSpiceSubPageTree@master] Clearify license. T206363
Change 467284 merged by jenkins-bot:
[mediawiki/extensions/BlueSpiceSubPageTree@REL1_31] Clearify license. T206363
@Pwirth: Do you also plan to correct https://www.mediawiki.org/wiki/Extension:BlueSpiceSubPageTree ?