code: function sendStringError(res, error, code, internalCode) {
  	var obj = { success: false };
  	obj[res ? 'description' : 'reason'] = error;
  	return sendError(res, obj, code, internalCode);
  }
docs: Sends a string error to the user. Attempts to localize it.
  @param res Optional Express Response object.
  @param error The error to send to the user. If it's a string, it will be localized.
  @param code The HTTP Status code to send (like 404, 403, etc).
  @param internalCode An optional internal code to also send to the client. This is useful for programmatic use of the API so we can do non-string-based comparisons.