Gadget export

To export the dark-mode-toggle gadget, click on "Download" button, save the downloaded file, go to Special:Import on destination wiki and upload it. Then add the following to MediaWiki:Gadgets-definition page:

* dark-mode-toggle[ResourceLoader|targets=desktop,mobile|dependencies=mediawiki.util,mediawiki.api,mediawiki.Uri,mediawiki.storage,es6-polyfills|peers=dark-mode-toggle-pagestyles]|dark-mode-toggle.js

You must have appropriate permissions on destination wiki (including the right to edit system messages) and import from file uploads must be enabled.