Make the main display saner

This tweaks:
 - packing to be what you'd kind of expect
 - makes the "summary info" always visible
 - the "extended info" is now on a notebook page of its own
 - dive profile the first notebook page, since the summary
   information is visible regardless.
which all just seems a lot more logical.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>