[Fix regression] LPS-31258 Localize "Load more results" message in Asset Categories Selector

Hi Nate,

I've updated the code according to your concerns: https://github.com/natecavanaugh/liferay-portal/pull/1599#issuecomment-23943900

This should be enough, I think.

Let me know if you have further founding.

Regards,
Tibor