First whack at custom UI chrome
Currently Mac only and not ready at all.
Work on UI
Work
Merge branch 'master' into new-ui
Add icon to title bar
More layout tweaks
Added close window command
Merge branch 'master' into new-ui
Light theme support
New fullsreen images
Linux and Windows support for new ui
Fix fullscreen
Now with full-screen mode for non-Mac too and light versions of
windows/Linux buttons.
Merge branch 'master' into new-ui + refactor CSS class names.

Conflicts:
	app/js/contextbar.js
Update 'info' location
Push all the preference togglers into the sandbox.
Merge remote-tracking branch 'origin/master' into new-ui
Whoa.
Unify the strippers.
Set up a user.css file to allow easy theme customization.  Also allowed themes to have more than one css file