Infinite scroll logic does not fire on browser resize.

[pulekies]

Infinite scroll logic should fire when the browser resizes.

How to repro:

1. Open the infinite scrolling page when the browser height is very small.
2. Resize the browser to make it much taller.

Expected: The infinite scroll logic fires and more items are loaded.

Actual: Infinite scroll logic does not fire, no more items are loaded. Attempting to scroll does nothing since there is no scrollbar (there isn't enough content yet to need one).

[soanvig]

Fix should be easy and include listening to window resize, using throttle the scroll event uses.