Updates results sort/order

[fimmspin]

Suggestions:

1. Please add feature to search into the updates results page (on top). May be useful a checkbox on every app tile to filter results and show only this app and the other possible sources for this app.

2. Also add option to view results ordered by app or by source (that is current sort-order).

I think that if i go to manually update an app the per-app sorting would be better.