fix unbound: configs in /etc/unbound/unbound.conf.d contained a syntax error and were missing .conf suffix
added support for /provider.json served from static site.
added templatewlv function (allows passing local variables to templates)
static site: added rack support, added custom apache config
work around hiera's inability to escape '%' by using ':percent:'
remove superfluous RackBaseURI directive
static site: better message for wrong location type.
static site: gracefully handle static sites that are not configured.