use button for pagination link

[mattheu]

I think technically this should use a button element here instead of a link.

I ran into this because this element is given the disabled attribute whilst loading more results. However this is not really honoured on links, only buttons, inputs etc. Visually this isn't a problem - CSS handles it OK. But the actual click event is still fired and you can easiliy trigger multiple requests.

[nickdaugherty]

Thanks!