Gadget export
To export the morebits 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:
* morebits [ResourceLoader |dependencies=mediawiki.user, mediawiki.util, mediawiki.Title, jquery.ui |hidden |requiresES6] |morebitsV3.js |morebitsV3.css
You must have appropriate permissions on the destination wiki (including the right to edit system messages) and import from file uploads must be enabled.