www: minor tweaks.

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk@25810 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac
www: add the build date in footer when hovering over.

Also, disable uncss until I figure out why it fails.

git-svn-id: http://tortoisesvn.googlecode.com/svn/trunk@25811 4cfb86a4-2c7a-11df-bd14-c1e331e6ceac