LPS-50465 - Migrate User Statistics portlet aui-base javascript

Hi Rob,

Attached is an update for https://issues.liferay.com/browse/LPS-50465.

There wasn't any tags using aui-base in this portlet, but I was able to replace a tag using aui-io-plugin-deprecated with just the vanilla jquery load() function.

Please let me know if there are any issues.

Thanks!