Comment 2 for bug 635994

I have a branch demoing this idea, see: lp:~mmcg069/software-center/focus-tracking

To test:
1. Reduce the window to as narrow as possible
2. Press the down arrow and focus-cycle through lobby widgets

Should see the scrolledview visible region follow the focus.

The same applies to the detailsview, however due to some mysterious segfaults the focus-tracking isn't as comprehensive as i would have liked, but i think i go the important ones covered.

See what you think.