TPView: Markup cleanup

A little bit of HTML/CSS cleanup. Rearranged elements to make better use
of space. Cleanup before adding UI for saving and loading server-side
logs.

TEST=./tpview/serve.sh look! it's pretty! Not really, but let's settle
on "prettier".
BUG=chromium-os:38304

Change-Id: Ib77517ae226ef83ae58ae5036d5d885f4f25841e
Reviewed-on: https://gerrit.chromium.org/gerrit/42145
Reviewed-by: Dennis Kempin <denniskempin@chromium.org>
Commit-Queue: Dennis Kempin <denniskempin@chromium.org>
Tested-by: Dennis Kempin <denniskempin@chromium.org>
8 files changed