Create speaker and feedback link components

src/Schedule/FeedbackLink.jsx

@@ -0,0 +1,3 @@
+export default function FeedbackLink(event) {
+    return (<a href={event.feedback_url}>Submit feedback</a>);
+}

src/Schedule/Speaker.jsx

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+import { getSpeakerName } from './utils.js';
+import PropTypes from 'prop-types';
+
+export default function Speaker(speaker) {
+    return (<>
+        <a href={'#'.concat(getSpeakerName(speaker))}>{getSpeakerName(speaker)}</a>
+        {speaker.organisation && <>/&#8288;{speaker.organisation}&#8288;/</>}
+    </>);
+}
+
+Speaker.propTypes = {
+    first_name: PropTypes.string.isRequired,
+    last_name: PropTypes.string.isRequired,
+    organisation: PropTypes.string,
+};