Auto-reload admin page after licence invalidate

[richard-jones]

How annoying is it that the admin page doesn't refresh after you've invalidated the licences?

To fix this we need to trigger a new search, by triggering "keyup" on the search box.

[emanuil-tolev]

Not very annoying, I only ever invalidate a few. That'll be the case as long as #74 is in effect. But when it's fixed, yes, we should probably add that line of javascript to the invalidate button.