Improve appearance of non-image permanodes.

The add button still looks poo, but that will be a separate change.

Change-Id: Iea5fd53f7f4eabfc8c2ed45c043fcbd661b68077
Screenshots: http://imgur.com/JARUznn,tsv6dgU
Schedule relayout whenever children are added to BlobItemContainer.

This fixes some bugs where we don't relayout when items are added
to BlobItemContainer for various reasons.

Change-Id: Ie434acc12e660af438b93d2dabd41f3d75fb7493
Merge "Schedule relayout whenever children are added to BlobItemContainer."
Merge "Improve appearance of non-image permanodes."
Add camtool dumpconfig subcommand.

Fixes http://code.google.com/p/camlistore/issues/detail?id=192
serverconfig: error on bad baseURL values.

Fixes https://code.google.com/p/camlistore/issues/detail?id=195

Change-Id: I74e194a3903cd7ae36319bc98659e436e9b142d4