Allow additional HTTP headers in configuration file

Best ratio coolness/sloc ever!

config

@@ -126,3 +126,8 @@ config = /etc/radicale/logging
 debug = False
 # Store all environment variables (including those set in the shell)
 full_environment = False
+
+
+# Additional HTTP headers
+#[headers]
+#Access-Control-Allow-Origin = *

radicale/__init__.py

@@ -313,6 +313,10 @@ class Application(object):
                 "Response content:\n%s" % self.decode(answer, environ))
             headers["Content-Length"] = str(len(answer))
 
+        if config.has_section("headers"):
+            for key in config.options("headers"):
+                headers[key] = config.get("headers", key)
+
         # Start response
         status = "%i %s" % (status, client.responses.get(status, "Unknown"))
         log.LOGGER.debug("Answer status: %s" % status)