* Cache the vhost we find during nginx deployment for OCSP enhancement.
* Refactor to pass domain into enhancement functions
* Add https redirect to most name-matching block listening non-sslishly.
* Redirect enhancement chooses the vhost most closely matching target_name that is listening to port 80 without using ssl.
* Add default listen 80 directive when it is implicitly defined
* Restructure add_server_directives to take a vhost as argument. This is the first step towards fixing vhost selection in nginx.
* Save path to vhost in file while parsing in get_vhosts().
* Disable creating a new server block when no names match.
* Make parser select vhost based on information in the vhost it found previously, rather than searching again for a match.
* Make add_server_directives update the passed vhost
* Update boulder config to pass test
* Add testing code for the _do_for_subarray function
* documentation and formatting updates
