Polish

Added a background over the gui behind the deployer confirm as per designs here: https://drive.google.com/a/canonical.com/folderview?id=0B7XG_QBXNwY1WGlyVzN2LWtrcmM&usp=drive_web

Most of the changes are indentation due to adding a wrapping `bar` element.

Fixed sidebar details panel height (it wasn't quite touching the top).