Change Details

**Reason**: See discussion in T193410 - Skin does not work at all. - [ - [x] Archive documentation on `mediawiki.org`: https://www.mediawiki.org/wiki/Skin:Synagonism-mw - [ ] Remove from `mediawiki/skins` (along with in `.gitmodules`) - [ ] Remove tests in `integration/config` ( `zuul/layout.yaml` ) - [ ] Remove from `translatewiki` (`groups/MediaWiki/mediawiki-skins.txt`) - [ ] Empty repository and add a OBSOLETE file. - [ ] Archive the extension's diffusion repository: https://phabricator.wikimedia.org/diffusion/SSYN/ - [ ] Mark the repository read-only in Gerrit: https://gerrit.wikimedia.org/r/#/admin/projects/mediawiki/skins/Synagonism - [ ] Delete the GitHub mirror.