add pull down to refresh on lists

[nklerk]

I would like to request a feature enhancement for pull to refresh on the browser capabilitie.

Currently it loads the browse callback. I would like to know in my driver if it was initiated by a pull to refresh.

to improve performance i want to cache library information in my driver. A pull down could then serve as a way to force a reload of the data.

[pfiaux]

I like the idea! Currently we don't use pull to refresh in the mobile app. Once we do I think this would be a nice feature.