adds dryrun option to nginx/redix/supervisor.update_config_file

only outputs the generated config file, instead of uploading it.
allows overriding of config templates
fixes "template" variable in nginx.conf file
adds option to use local config.ini file
adds supervisor command templates and new relic support
adds newrelic license_key and environment_name settings
adds docs for recently added features
version bump to 0.1.25