Symbiosis: Skel missing file references
Imported from https://www.github.com/BytemarkHosting/symbiosis/issues/135
When a new domain directory is created within /srv/, Symbiosis Stretch will create appropriate config, and public sub-directories.
The /srv/domain.com/public/htdocs/index.html file generated refers to incorrect file paths, as it looks for /bytemark/bytemark.css and /bytemark/bytemark.png, but the bytemark/ directory doesn't exist.
Additionally, the index points to the Jessie Symbiosis docs, where they should be for Stretch.