Gadget export
From Test Wiki
To export the UserRightsManager gadget, click on "Download" button, save the downloaded file, go to Special:Import on the destination wiki and upload it. Then add the following to MediaWiki:Gadgets-definition page:
*UserRightsManager[ResourceLoader|default|dependencies=mediawiki.api, oojs-ui|rights=nuke]|UserRightsManager.css|UserRightsManager.js
You must have appropriate permissions on the destination wiki (including the right to edit system messages) and import from file uploads must be enabled.
