Bootstrap buttons in events instead of <a> tags

[pl4nty]

      ? <Button as={Badge} variant="primary" onClick={() => dispatch(selectOccurrence)}>Choose</Button>

I found a way to use react-bootstrap buttons that looks decent and helps with ARIA/theming, you can try it by editing the docs examples. Could also use variant="link", or maybe save it for locationLine to differentiate between links and buttons.

Originally posted by @pl4nty in #55 (comment)