DeleteCookie deletes the given cookie if it exists.

InitMinifier sets up the HTML/JS/JSON minifier if enabled in gochan.json.

MinifyTemplate minifies the given template ref (string or template.Template pointer) and data, and returns any errors.

MinifyWriter minifies the given writer/data (if enabled) and returns the number of bytes written and any errors.

ValidReferer checks to make sure that the incoming request is from the same domain (or if debug mode is enabled).