All the hardcoded strings should be internationalized using the react-intl pattern.
react-intl constructs outlined at https://github.com/folio-org/stripes-core/blob/master/doc/i18n.md
Use <FormattedMessage>, <FormattedDate>, and <FormattedTime> as often as possible, only falling back to formatMessage(), formatDate(), and formatTime() (accompanied by injectIntl) when a bare string is absolutely necessary.
React Intl docs: https://github.com/yahoo/react-intl/wiki
Additional requirements to review