More header tweaks, especially for mobile styles
Fix invalid CloudFront cache invalidation, maybe?

The errors looked like this:
	Done. Uploaded 1439329 bytes in 34.8 seconds, 40.44 kB/s.  Copied 0 files saving 0 bytes transfer.
	ERROR: S3 error: 400 (InvalidArgument): Your request contains one or more invalid invalidation paths.
	FAILED