docs: def enable_cors(self):
          '''Enables Cross Origin Resource Sharing.
  
          This makes sure the necessary headers are set so that this
          web application's routes can be accessed from other origins.
  
          :rtype: :class:`WebBuilder`
          '''
          def access_control_headers():
              bottle.response.headers['Access-Control-Allow-Origin'] = '*'
              bottle.response.headers['Access-Control-Allow-Methods'] = \
                  'GET, POST, PUT, DELETE, OPTIONS'
              bottle.response.headers['Access-Control-Allow-Headers'] = \
                  'Origin, X-Requested-With, Content-Type, Accept, Authorization'
  
          def options_response(res):
              if bottle.request.method == 'OPTIONS':
                  new_res = bottle.HTTPResponse()
                  new_res.headers['Access-Control-Allow-Origin'] = '*'
                  new_res.headers['Access-Control-Allow-Methods'] = \
                      bottle.request.headers.get(
                          'Access-Control-Request-Method', '')
                  new_res.headers['Access-Control-Allow-Headers'] = \
                      bottle.request.headers.get(
                          'Access-Control-Request-Headers', '')
                  return new_res
              res.headers['Allow'] += ', OPTIONS'
              return bottle.request.app.default_error_handler(res)
  
          self.app.add_hook('after_request', access_control_headers)
          self.app.error_handler[int(405)] = options_response
          return self