code: function httpOk(req, res, content, fileExt) {
      res.writeHead(200, {
          'Content-Type': Mine.getType(fileExt),
      });
      res.write(content, 'binary');
      res.end();
  }
docs: Default implementation OK HTTP response on GET file request
  @param {Object} req HTTP request
  @param {Object} res HTTP response
  @param {string} content File content
  @param {string} fileExt File extension