Make all of the change view scrollable
Make all of the change view scrollable

Which makes better use of vertical space.

Also, tuck the votes box in under the change info (so it doesn't
start below a very long commit message -- that wastes a lot of
space).

Change-Id: Ia7d216ce584221fa5055e1a7e5e6fba1ed94b399

aspiers/gertty,stackforge/gertty,openstack/gertty